Every tool below runs 100% in your browser. Pick a category, or type to find a tool instantly.
Calculators 117
- Invoice Tax Breakdown Calculator, Split any invoice into subtotal, tax, and total, per line item.
- Compound Interest & Loan Amortization Calculator, See compound growth or a full loan amortization schedule.
- Aspect Ratio Calculator, Find the matching dimensions for any aspect ratio.
- Global Time Zone Meeting Planner, Schedule meetings across time zones with one glance.
- Blog Reading Time Estimator, How long does it take to read this?
- Tip & Bill Splitter Calculator, Split the bill and tip fairly between friends.
- Calculate Salary to Hourly Rate Online: Free Calculator, Calculate salary to hourly rate online with custom work hours & paid time off.
- Retail Discount & Markup Pricing Calculator, Nail pricing with discounts and markups.
- Compound Inflation Purchasing Power Calculator, What will money be worth in the future?
- Percentage Calculator – Percentage Increase, Decrease & Difference, Calculate percentage increase, decrease, difference, and fraction of total instantly.
- Fuel Cost & Trip Mileage Calculator, Price out a road trip before you leave.
- BMI & Daily Calorie Intake Calculator, Track BMI and daily calorie needs.
- Daily Water Intake Calculator, How much water should you drink?
- Age Calculator: Date to Date Calculator, Day Counter & Calculate Age, Calculate your exact age, count days between dates, and compute calendar dates.
- Date-to-Date Duration Calculator, Exact days, weeks, and months between two dates.
- Add/Subtract Days From Date Tool, Jump forward or back to a future or past date.
- Business / Working Days Calculator, Count Monday-to-Friday working days only.
- Countdown Timer Generator, Ticking countdown to a launch or event.
- Stopwatch & Lap Timer, High-precision browser stopwatch with lap splits.
- Random Number Generator (Range), Crypto-random numbers between custom bounds.
- Even/Odd Number Filter, Split a list of digits into evens and odds.
- Fraction-to-Decimal Converter, Turn fractions into clean decimals, instantly.
- GCD & LCM Calculator, Greatest Common Divisor and Least Common Multiple.
- Quadratic Equation Solver, Solve ax² + bx + c = 0 with steps.
- Pythagorean Theorem Calculator, Solve right-triangle side lengths with a² + b² = c².
- Circle Area & Circumference Calculator, Area, circumference, radius, and diameter from one input.
- Triangle Area Calculator, Area via base/height or three sides (Heron's formula).
- Matrix Addition & Multiplication Tool, Add and multiply matrices client-side.
- Roman Numeral ↔ Arabic Converter, Translate XLII to 42 and back.
- Simple Interest Calculator, Principal, rate, and time interest in seconds.
- Unit Price Comparison Calculator, Compare price per gram, ml, oz, or item.
- Recipe Scale & Portion Converter, Scale ingredients up or down by servings.
- Paint Coverage & Wall Area Calculator, Estimate paint cans from wall size.
- Tile & Grout Calculator, Tiles, boxes, adhesive, and grout needed.
- Concrete, Gravel & Mulch Calculator, Volume or bags by area and depth.
- Wallpaper Roll Estimator, Rolls needed with pattern repeat.
- Flooring & Carpet Area Calculator, Square feet/metres with waste allowance.
- Sleep Cycle Bedtime Calculator, Best bedtime or wake time.
- Running Pace & Split Calculator, Pace, time, and distance splits.
- Heart Rate Zone Calculator, Training zones from age and resting HR.
- One-Rep Max & Plate Loader, Estimate 1RM and plates per side.
- Macro & Protein Split Calculator, Calories into protein/carbs/fat.
- Body Fat Estimate (Tape Method), Simple circumference-based estimate.
- Ideal Weight Range Calculator, Healthy weight range by height.
- Steps to Calories Calculator, Steps to estimated calories burned.
- Electricity Cost Calculator, Watts x hours x electricity rate.
- EV Charging Cost Calculator – Electric Car Charging Cost, Calculate electric vehicle (EV) charging cost for home & public chargers.
- Solar Payback Estimator, Simple payback by usage and rate.
- Carbon Footprint Quick Estimator, Travel, home, and diet estimate.
- Debt Payoff Snowball Calculator, Order debts by balance.
- Savings Goal Timeline Calculator, Monthly saving needed for a goal.
- Budget 50/30/20 Splitter, Needs, wants, savings.
- Rent Affordability Calculator, Income to rent range.
- Overtime & Shift Pay Calculator, Regular, overtime, and differential.
- Commission & Bonus Calculator, Base pay plus commission tiers.
- Freelance Rate Calculator, Desired income to hourly rate.
- Meeting Cost Calculator, Attendees x time x hourly rate.
- Coffee Ratio Calculator, Grams coffee to water.
- Pizza Dough Calculator, Dough by number, size, and style.
- Sourdough Hydration Calculator, Flour, water, and starter ratios.
- Cocktail Dilution & Batch Calculator, Scale drinks and ice melt.
- BBQ Meat Quantity Calculator, Pounds by guests and sides.
- Party Food & Drink Estimator, Quantities per guest.
- Cat Age & Pet Age Calculator – Cat Years to Human Years, Convert cat and general pet years to human-equivalent age.
- Pet Food Portion Calculator, Calories by weight and activity.
- Pregnancy Due Date Calculator, LMP or conception date.
- Ovulation Window Estimator, Cycle-based estimate.
- Baby Feeding Amount Calculator, Formula/breast milk by weight and age.
- Child Height Predictor, Estimate from parent heights.
- Scientific Notation Converter Calculator, Decimal to scientific notation.
- Significant Figures Counter & Rounder, Count and round sig figs.
- Mean, Median, Mode & Range Calculator, Basic stats instantly.
- Standard Deviation & Variance Calculator, Population or sample.
- Z-Score & Percentile Calculator, Standard score to percentile.
- Combination & Permutation Calculator, nCr and nPr.
- Prime Factorization Calculator, Factor any integer.
- Fibonacci Sequence Generator, Generate sequence by length.
- Dice Probability Calculator, Odds for dice outcomes.
- Poker Hands Ranked in Order: Official Poker Hand Chart & Odds Calculator, Official poker hands ranking chart from best to worst, plus live Texas Hold'em odds calculator.
- Lottery Odds Calculator, Odds by number picks.
- Julian Date Converter, Calendar date to Julian day.
- Week Number Calculator, ISO week number for any date.
- Moon Phase Calculator, Phase for a given date.
- Sunrise/Sunset Calculator, By date and location.
- Quilt Binding Calculator, Calculate quilt binding strip count, total inches, and exact fabric yardage.
- Quilt Backing Calculator, Calculate quilt backing yardage, panel layout, and seam orientation.
- Curtain Fabric Calculator, Calculate curtain yardage, panel widths, hems, and pattern repeats.
- No Tax on Overtime Calculator, Calculate your federal tax savings and take-home pay under the new US overtime tax exemption law.
- No Tax on Tips Calculator, Estimate your tip income tax savings and take-home pay under the No Tax on Tips policy.
- TV Size & Viewing Distance Calculator, Find the optimal TV screen size for your room distance using THX and SMPTE standards.
- Dog Age Calculator (UCSD DNA Epigenetic Science), Calculate your dog's real scientific human age using DNA methylation research.
- Bra Size Calculator & Sister Size Chart, Find your true bra size with modern direct measurements and sister sizes.
- Australian Bra Size Calculator (AU/NZ Cup & Dress Size Finder), Find your Australian and New Zealand bra size (Dress sizes 6–26) with sister sizes and Berlei/Bonds conversion.
- Asian Bra Size Calculator (Japan, China & Korea JIS Cup Finder), Calculate JIS metric bra sizes (65–100 cm) with 2.5cm cup intervals and Japanese push-up fit adjustments.
- African Bra Size Calculator (South Africa SANS & Pan-African Finder), Calculate South African (SANS 1111) and Pan-African bra sizes with Woolworths and international conversions.
- UK Bra Size Calculator (British Double-Cup & Sister Size Finder), Accurate British bra sizing with double-letter cups (DD, FF, GG, HH) for Panache, Freya & M&S.
- European Bra Size Calculator (EU, French & Italian Cup Finder), Calculate EN 13402 European metric bra sizes (60–120cm), French (FR 80–135), and Italian (Taglia 1–8).
- High School GPA Calculator (Weighted & Unweighted), Calculate unweighted 4.0 and weighted AP, IB, and Honors GPAs with cumulative credits.
- Dog Chocolate Toxicity Calculator & Hotline Guide, Calculate theobromine toxicity dose (mg/kg) for your dog with 24/7 vet hotline emergency advice.
- Pizza Quantity Calculator (How Many Pizzas to Order), Calculate how many pizzas to order for any party, meeting, or group event.
- Overtime Pay Calculator (FLSA & California Rules), Calculate time-and-a-half (1.5x), double time (2.0x), and California daily overtime.
- UK Income Tax Calculator (Take-Home Pay & Salary Calculator), Calculate UK income tax, National Insurance, and take-home pay for 2024/25 & 2025/26.
- Australia GST Calculator (Add or Remove 10% GST & BAS), Add 10% GST or calculate the 1/11th GST component backwards from inclusive totals.
- Roof Pitch Calculator, Convert roof pitch between rise-over-run, degrees, and rafter lengths.
- DC Paycheck Calculator, Estimate Washington DC take-home pay after federal and DC tax.
- Deck Material Calculator, Estimate decking boards, joists, and screws for any deck size.
- Pottery Shrinkage Calculator, Predict fired clay size from wet size and shrinkage rate.
- Scope 3 Commute vs Remote Work Carbon Calculator, Compare office commute vs remote-work emissions per employee.
- Event & Conference Carbon Footprint Calculator, Estimate total CO2e for conferences and events.
- Digital Ad Campaign Carbon Calculator, Turn ad impressions into kg CO2e by format.
- E-Commerce Return & Last-Mile Carbon Calculator, Cost the carbon of delivery and returns per parcel.
- Air vs Ocean Freight Carbon Comparator, Compare air and sea cargo kg CO2e per shipment.
- Video Streaming & Cloud Meeting Carbon Calculator, Does camera-off really save carbon? Measure it.
- Hotel Stay & Business Travel Carbon Calculator, Room-night CO2e by hotel class and region grid.
- Concrete & Cement Embodied Carbon Estimator, Mix-level CO2e per m3 with fly-ash and slag swaps.
- Paper vs Digital Carbon & Savings Calculator, Trees, water and CO2 saved by going paperless.
- AI Prompt & LLM Inference Carbon Calculator, Per-token inference energy and CO2e by model tier.
Converters 41
- Online Flipbook Generator & PDF Flipbook Maker, Create 3D flip books with real page turn animation and sound. Download as MP4 video or offline book.
- JSON to CSV Converter – Convert JSON to CSV & CSV to JSON Online, Convert JSON arrays to Excel CSV and CSV back to JSON instantly in your browser.
- Base64 Encoder & Decoder, Encode or decode Base64 text instantly.
- MD5 and SHA Hash Generator, Generate MD5, SHA-1, SHA-256, and SHA-512 hashes.
- HTML Entity Encoder & Decoder, Escape HTML or decode entities with one click.
- Kitchen & Cooking Unit Volume Converter, Cups, ml, tbsp, tsp: convert like a chef.
- Oven Temperature Converter (°C, °F, Gas Mark), No more guessing oven settings across recipes.
- Morse Code Translator & Audio Player, Encode text as Morse, decode Morse, hear it play.
- Binary, Hexadecimal & Decimal Converter, Convert between bin, hex, dec, and oct.
- Epoch Unix Timestamp Converter, Convert Unix timestamps to dates and back.
- Binary-to-Text Translator, Turn 01010100 strings back into readable text.
- Text-to-Binary Translator, Encode any text as raw binary code.
- Hex-to-Text Converter, Translate hex codes into plain human text.
- Text-to-Hex Converter, Encode regular text as hexadecimal.
- ASCII Code Lookup Table, Searchable reference for character code numbers.
- URL Encoder / Decoder, Escape or unescape special characters for URLs.
- Data Storage Unit Converter, Bytes, KB, MB, GB, TB in one click.
- Speed Unit Converter, mph, km/h, knots, and m/s, converted.
- Pressure Unit Converter, PSI, Pascal, Bar, and Atmosphere.
- Energy & Power Converter, Joules, calories, kWh, and horsepower.
- Frequency Unit Converter, Hz, kHz, MHz, and GHz.
- Angle Unit Converter, Degrees, radians, and gradians.
- Volume / Liquid Converter, Gallons, quarts, pints, cups, liters, and more.
- Weight & Mass Converter, kg, pounds, grams, ounces, and stones.
- Length & Distance Converter, Meters, feet, inches, yards, miles, kilometers.
- Temperature Converter, Celsius, Fahrenheit, and Kelvin.
- Time Unit Converter, Seconds, minutes, hours, days, weeks, years.
- Force Unit Converter, Newtons, pound-force, and dyne.
- Shoe Size Converter, US/EU/UK/CM.
- Ring Size Converter, Circumference to ring size.
- Clothing Size Converter, International size equivalents.
- Base32 Encoder / Decoder, Base32 text conversion.
- HEX to RGB to HSL Converter, Color format conversion.
- CMYK to RGB Converter, Print to screen color.
- PX to REM/EM Converter, CSS unit conversion.
- Viewport Unit Converter, px to vw/vh.
- Color Name Finder, Closest named color.
- File to Base64, Any small file to Base64.
- Unicode Escape / Unescape, uXXXX conversion.
- ICS Calendar File Viewer, Validator & CSV Export, Open, inspect, validate, and convert .ics calendar files to CSV and JSON.
- Crochet Hook Size Converter, Convert crochet hook sizes between US, UK, and metric millimetres.
Developer Tools 79
- Meta Tag Previewer (Google & Twitter), Preview how your page appears in Google and social cards.
- Cron Expression Parser & Explainer, Decode any cron schedule into plain English.
- HTML/CSS Color Picker & Contrast Checker, Pick colors and verify WCAG contrast ratios.
- CSS Box-Shadow Generator, Design CSS box shadows with live preview.
- CSS Border-Radius Visualizer, Craft wobbly and organic border radii visually.
- Regex Tester & Visual Matcher, Test and visualize regular expressions live.
- PEM Certificate & RSA Key Decoder, Inspect certs and keys without leaving the browser.
- IP Address Lookup & Network Detail, Analyze an IP address or CIDR range.
- DNS Lookup & Propagation Checker, Resolve DNS records for any host.
- SSL Certificate Expiration Checker, How many days until a cert expires?
- HTTP Headers Inspection Tool, See the response headers any URL returns.
- Password Entropy Meter & Brute-Force Estimator, Just how strong is that password?
- Internet Speed Test & Ping Checker, Check your ping and measure internet latency in your browser.
- Scroll Speed Test, Auto-scroll any page and measure scroll speed.
- HTML to Markdown Converter, Convert HTML tags into clean Markdown syntax.
- Markdown to HTML Converter, Compile Markdown into production-ready HTML.
- CSS Minifier, Shrink stylesheets by stripping whitespace.
- CSS Beautifier / Formatter, Indent and clean up messy CSS.
- JavaScript Minifier, Compress scripts to speed up page loads.
- JavaScript Beautifier, Restructure unformatted JS into readable style.
- JSON Validator & Linter, Check syntax and flag broken brackets or commas.
- XML-to-JSON Converter, Transform legacy XML structures into JSON.
- YAML-to-JSON Converter, Convert configuration syntax instantly.
- SQL Query Formatter, Clean up messy database queries.
- SQL Insert to CSV Exporter, Turn SQL INSERT statements into CSV tables.
- HTAccess Redirect Generator, Write clean 301/302 rewrite rules.
- Robots.txt Generator, Build search-engine crawl rules blocks.
- Sitemap XML Structure Builder, Generate sitemap.xml templates for your site.
- Meta Description Length Checker, Measure snippet pixel width and character count.
- Placeholder Image Generator, Make /600×400 placeholder boxes for wireframes.
- CSS Triangle Generator, Border-code speech bubbles and arrows.
- CSS Flexbox Playground & Generator, Experiment with flexbox alignments visually.
- JSON Tree Visualizer, Render nested JSON as an expandable tree.
- Browser User-Agent Inspector, See the live browser string and OS of the visitor.
- Screen Resolution & Viewport Tester, Live window dimensions and aspect ratio.
- JSON to YAML Converter, JSON to clean YAML.
- XML Beautifier / Formatter, Pretty-print XML.
- YAML Validator / Formatter, Check and clean YAML.
- TOML to JSON Converter, Config format conversion.
- INI to JSON Converter, Legacy config conversion.
- .env Parser & Validator, Inspect environment files.
- SQL WHERE Clause Builder, Build conditions visually.
- Code Screenshot Generator, Styled code images.
- JSON Path Extractor, Pull values by JSONPath.
- JSON Schema Generator, Infer schema from JSON.
- JSON to TypeScript Interface, Types from JSON.
- JSON to Go Struct, Go structs from JSON.
- JSON to Python Dataclass, Python classes from JSON.
- JSON to SQL Insert, JSON arrays to INSERT statements.
- HTML Table to CSV, Scrape table to CSV.
- HTML Table to Markdown, Table to Markdown.
- HTML to JSX Converter, Convert HTML attributes to JSX.
- CRC32 Checksum Calculator, File/text checksum.
- Data URI Generator, Text or file to data URI.
- SVG to Data URI, Inline SVG as CSS background.
- Manifest.json Generator, PWA manifest builder.
- CSS Gradient Generator, Linear/radial gradients visually.
- CSS Clip-Path Generator, Shape clipping preview.
- CSS Grid Generator, Build grid layouts.
- CSS Filter Generator, Blur, brightness, contrast, etc.
- CSS Cubic-Bezier Generator, Animation easing curves.
- CSS Text-Shadow Generator, Layered text shadows.
- CSS Animation Keyframes Generator, Starter keyframes.
- Font Pairing Previewer, Compare heading/body fonts.
- Line Height & Typography Scale Calculator, Type scale.
- Gradient Text Generator, CSS gradient text generator.
- PDF Page Counter, Count PDF pages.
- PDF to Text, Extract text from PDF.
- UTM Builder – Free Google Campaign URL Generator, Free UTM Builder – Create Campaign URLs Without Uploading Your Data
- Query String Parser & Editor, Edit URL parameters.
- URL Parser & Component Extractor, Protocol, host, path, query.
- Open Graph Tag Generator, Social meta tags.
- Schema.org JSON-LD Generator, Structured data.
- Hreflang Tag Generator, Multilingual SEO tags.
- RSS Feed Builder, Simple feed XML.
- MIME Type Lookup, Extension to MIME type.
- HTTP Status Code Lookup, Status code meanings.
- LLM API Cost Calculator, Compare monthly API costs across OpenAI, Anthropic, Gemini, and DeepSeek.
- Subnet Cheat Sheet, Look up subnet masks, hosts, and ranges in one quick table.
Formatters 3
- URL Slug Generator & Text Cleaner, Turn any text into a clean, SEO-friendly URL slug.
- Case Converter – camelCase, snake_case, UPPERCASE & Lowercase Tool, Convert code cases (camelCase, snake_case, kebab-case) and text styles in 1 click.
- YouTube Chapter Formatter & Timestamp Validator, Format and validate rough video timestamps into YouTube-compliant chapters.
Fun & Games 12
- Random Team & Raffle Name Picker, Fairly split names into teams or draw a raffle winner.
- Coin Flip & Dice Rolling Simulator, Flip a coin or roll the dice.
- Wheel of Names: Random Name Spinner, Spin the wheel to pick a random name.
- Random Emoji Picker, Quick emoji choice.
- Pomodoro Timer – timer 25 minute, Set timer for 25 minutes of focus with the Pomodoro technique.
- Interval Timer, HIIT/custom intervals.
- Metronome – Free Interactive Online Tempo & Beat Generator, High-Precision Web Audio Metronome with Visual Pendulum & Tap Tempo
- BPM Tap Tempo, Tap to find BPM.
- Tone Generator, Sine/square/saw frequencies.
- Piano Note Frequency Calculator, Note to Hz.
- Music Transposer, Shift key and chords.
- D&D Carry Capacity Calculator, Calculate D&D 5e carry capacity, push, drag, and lift from Strength.
Generators 14
- Lorem Ipsum Dummy Text Generator, Generate placeholder copy for mockups and wireframes.
- UUID / GUID v4 Batch Generator, Generate random UUID v4 and GUID codes in batches.
- Random User Profile Generator, Fake names, addresses, and emails for mockups.
- Pronounceable Password Generator, Easy-to-say passwords from phonetic syllables.
- Dummy CSV File Downloader, Pre-formatted mock data for code testing.
- Gitignore Generator, Templates by language/framework.
- License Generator, MIT, Apache, GPL, etc.
- README Template Generator, Starter README files.
- ULID Generator, Sortable unique IDs.
- NanoID Generator, Short random IDs.
- Random Color Generator, Hex palettes.
- Classroom Seating Chart Generator, Interactive seating chart maker with drag-drop and keep-apart constraints.
- Bingo Card Generator (Printable & Bulk), Generate custom randomized 5×5 & 3×3 printable bingo cards in bulk.
- Free Acronym Generator: Maker & Creator, Make acronyms from phrases or backronyms from words like LEAD.
Image Tools 19
- PNG → JPG / WEBP In-Browser Converter, Convert images between PNG, JPG, and WEBP locally.
- Image Color Palette Extractor (HEX), Pull a hex color palette out of any image.
- Multi-Size Favicon Generator (.ico packs), Generate every favicon size you need.
- Business Card QR Code Generator – Digital vCard & Contact QR, Generate digital business card QR codes with contact details & vCard.
- Free QR Code Generator Online – Custom Color & Logo QR Maker, Create free QR codes instantly for web links, text, and downloads.
- Barcode Generator (EAN, UPC, Code 128), Generate EAN, UPC, and Code 128 barcodes.
- Image to Text (OCR) – Extract Text from Images, Turn a screenshot or photo into editable text.
- Color Shade & Tint Generator, Lighter and darker variants of any HEX color.
- Image Metadata (EXIF) Viewer, Inspect camera settings and GPS client-side.
- Image Format Identifier, Reveal the true type from file headers.
- Color Blindness Simulator, Preview palettes under CVD.
- Image DPI / Print Size Calculator, Print dimensions from pixels.
- Image PPI / Pixel Density Calculator, Pixels per inch.
- Image File Size Estimator, Estimate compressed size.
- Image to Base64, Embed images in HTML/CSS.
- Base64 to Image, Decode Base64 images.
- SVG to PNG Converter, Rasterize SVG locally.
- WiFi QR Code Generator – Share Wi-Fi Passwords Instantly, Share Wi-Fi network credentials instantly without typing passwords.
- vCard QR Code Generator, Contact card QR.
Instagram 4
- Instagram Bio SEO Analyzer – Check & Optimize Your Bio, Paste your name, bio, and link to get a rule-based Instagram bio SEO score.
- Instagram Hashtag Analyzer & Generator, Extract hashtags from any caption, check them, and generate related ones.
- Instagram Grid Preview Planner – 3×3 Feed Organizer, Upload 9 images, preview your 3×3 grid, and drag to reorder.
- Instagram Post SEO Title Previewer – Google SERP Preview, Paste a caption and see how Google shows it as a search result.
LinkedIn 6
- LinkedIn Profile SEO Scorecard – Free Audit, Paste your headline, summary, and experience for an SEO score.
- LinkedIn Headline Generator – Template-Based Ideas, Enter your role and industry to get headline templates.
- LinkedIn Article to Blog Converter – Repurpose to Markdown, Paste LinkedIn article HTML and get clean Markdown.
- LinkedIn Post Preview Tool – Feed & Google Snippet, See your LinkedIn post in the feed and as a Google snippet.
- LinkedIn Article to PDF – Print-Clean Export, Turn a LinkedIn article into a clean print-ready PDF.
- LinkedIn Post to Image – Styled Quote Cards, Render LinkedIn post text as a styled shareable image.
Pinterest 4
- Pinterest Keyword Tool – Free Long-Tail Ideas, Type a seed and get Pinterest long-tail keyword ideas.
- Pinterest Pin SEO Analyzer – Title, Description & Alt, Paste pin copy and get an instant Pinterest SEO score.
- Pinterest Board Planner – Visual Organizer, Organize boards visually with drag-and-drop, saved locally.
- Pinterest Pin Preview Tool – Pin & Search Sizes, Upload a pin image and preview feed and search sizes.
SEO Tools 9
- Meta Title Pixel Width Checker, Measure title tag width against Google\u2019s 600px truncation point.
- LSI Keyword Generator, Generate semantic LSI keywords, search intent variations, and long-tail topics.
- Keyword Density & N-Gram Analyzer, Check 1-, 2-, and 3-word phrase frequency.
- Canonical URL Tag Generator, Build canonical and alternate link tags.
- Headline & Title Tag Analyzer, Score headlines for CTR potential.
- Title Capitalization Tool – Capitalize My Title (AP, Chicago & MLA), Apply editorial title case rules (AP, Chicago, MLA, APA) to headlines.
- Free SEO Checker: Website Audit & Optimization Tool, Instant on-page SEO analysis: audit meta tags, headings, canonicals & site health.
- AI Crawler robots.txt Audit & Checker, Audit which AI scrapers and LLM bots (GPTBot, ClaudeBot, etc.) are blocked or allowed.
- llms.txt Generator & Validator, Generate and validate spec-compliant llms.txt & llms-full.txt files for AI agents.
Security & Network 14
- IPv4 Subnet Calculator, Network masks, wildcards, and host ranges.
- MAC Address Vendor Lookup, Identify manufacturers from MAC prefixes.
- Port Scanner Reference Guide, Interactive directory of common TCP/UDP ports.
- Bcrypt Hash Generator, Hash strings for password handling tests.
- JWT (JSON Web Token) Decoder, Split tokens into header, payload, and signature.
- UUID Checker & Version Validator, Confirm an identifier fits standard UUID syntax.
- Credit Card Number Mock Generator (Luhn), Valid test cards for sandbox checkouts.
- IBAN Bank Account Validator, Check IBAN syntax and checksums per country.
- ISBN Book Number Validator, Confirms ISBN-10 and ISBN-13 checksums.
- HMAC Generator, HMAC with secret and hash.
- VIN Decoder, Basic vehicle identification.
- Phone Number Formatter / Validator, Normalize numbers.
- Punycode / IDN Converter, International domain names.
- Unicode Character Inspector, Codepoint, name, block.
Social Media 2
- Content Repurposing Formatter – Threads & Transcripts to Blog, Turn threads, captions, or transcripts into schema-ready blog posts.
- Social SERP Preview Tool – Every Platform in Google, Preview any social post as a Google title, description, and URL.
Text Tools 35
- Text Diff Checker, Spot the difference between two blocks of text.
- SVG Path & Icon Cleaner, Minify and normalize SVG markup.
- Text Line Sorter & Duplicate Remover, Sort lines and strip duplicates instantly.
- Word Frequency & Keyword Counter, See which words dominate your text.
- Reverse Text Generator, Reverse letters, words, or whole sentences in one click.
- Upside-Down Text Generator, Flip regular text upside down for social media.
- Vaporwave / Aesthetic Text Generator, Spread text out as spaced full-width characters.
- Zalgo / Glitch Text Generator, Add chaotic combining marks to any text.
- Strikethrough & Underline Text Generator, Draw lines through or under any text.
- LeetSpeak ($33p$) Translator, Turn plain letters into hacker-style leetspeak.
- Word-to-Number Converter, Turn written numbers like "four hundred" into digits.
- Number-to-Words Converter, Write out any number for checks or legal documents.
- Remove Line Breaks Tool, Flatten headings and carriage returns into one block.
- Add Line Numbers Utility, Number every line of a text block.
- Text Indent / Unindent Tool, Add or strip tabs and spaces across a block.
- Remove Extra Spaces Tool, Kill double spaces, trailing spaces, and stray tabs.
- ASCII Art Text Banner Generator, Turn names into big blocky ASCII banners.
- Custom Delimiter Splitter, Split lists on commas, pipes, or any custom separator.
- Find and Replace Text Tool, Bulk-swap keywords across large blocks of text.
- Extract Email Addresses Tool, Pull clean email lists out of messy text.
- Extract URLs & Links Tool, Pull every web link out of HTML or plain text.
- Word Counter – Free Online Word, Character & Sentence Counter, Live word, character, sentence, paragraph, and reading time counter with limit checker.
- Flesch-Kincaid Readability Score Calculator, Flesch reading ease, grade level, and stats.
- Syllable Counter, Syllables per word and total.
- Markdown Table Generator, Build Markdown tables visually.
- Markdown Checklist Generator, Task lists from plain text.
- ROT13 / Caesar Cipher, Simple text encryption.
- Vigenere Cipher, Keyword-based cipher.
- A1Z26 Cipher, Letters to numbers and back.
- NATO Phonetic Alphabet Converter, Text to Alpha Bravo Charlie.
- Braille Translator, Text to Braille Unicode.
- Pig Latin Translator, Fun text transformation.
- Emoji Shortcode Converter, 🙂 to emoji.
- Silent Letter Finder, Find silent letters in any English word or passage.
- Paragraph Expander – Make Text Longer, Turn short notes into fuller paragraphs with guided prompts.
TikTok 8
- TikTok Caption SEO Analyzer – Optimize for Search, Paste a TikTok caption and get a rule-based SEO score with fixes.
- TikTok Keyword Suggestion Tool – Free Long-Tail Ideas, Type a seed keyword and get hundreds of long-tail TikTok ideas.
- TikTok Hashtag Mix Builder – Broad, Medium & Niche, Enter your niche and get a balanced broad, medium, and niche tag mix.
- TikTok Video to Blog Post Formatter, Turn a transcript or description into a clean blog post with schema.
- TikTok Video Downloader – No Watermark, Free, Paste a TikTok link and download the video without watermark.
- TikTok MP3 Downloader – Save Audio Free, Paste a TikTok link and download just the audio as MP3.
- TikTok Photo Carousel Downloader – Save as ZIP, Download every photo from a TikTok carousel as one ZIP.
- TikTok Bulk Downloader – Save Many Videos at Once, Paste a list of TikTok links and download them one by one.
Vegan Tools 5
- Vegan Protein Calculator – Daily Needs & Foods, Daily protein target by weight, activity and goal.
- Vegan Egg Substitute Calculator, Flax, chia, aquafaba or banana per egg and recipe.
- Vegan Meal Calorie & Macro Calculator, Build a meal, track calories, protein, carbs and fat.
- Vegan Grocery Budget Calculator, Weekly and monthly vegan food costs by household.
- Vegan Bodybuilding Macro Calculator, Bulking, maintenance and cutting calories + macros.
Women's Health 6
- Period Calculator: Next Period Date & Cycle Forecast, See your next period and the six after it.
- Cycle Length Calculator: Average Cycle & Regularity Check, Average several cycles and see how regular you are.
- Waist-to-Hip Ratio Calculator (WHO Risk Bands), One ratio, WHO risk bands, centimetres or inches.
- BMR & TDEE Calculator: Mifflin-St Jeor Daily Calories, Resting calories, maintenance and a safe target.
- Conception Date Calculator: From Due Date or Last Period, Work backwards to ovulation, the fertile window and conception.
- Pregnancy Test Calculator: When to Test & Avoid False Negatives, The earliest date a home test can actually detect it.
X (Twitter) 4
- X (Twitter) Post SEO Title Previewer – Google SERP Preview, Type an X post and see its Google title and description.
- X (Twitter) Thread to Blog Converter – Thread to Article, Paste an X thread and get a structured blog post.
- X (Twitter) Hashtag & Keyword Analyzer, Extract X hashtags, count them, and get related keywords.
- X (Twitter) Character Counter with SERP & Feed Preview, Live X character count plus Google and feed previews.
YouTube 7
- YouTube Keyword Research Tool – Free Autocomplete Ideas, Type a seed and get hundreds of YouTube keyword ideas, free.
- YouTube Title & Description SEO Analyzer, Paste a title and description to get an instant YouTube SEO score.
- YouTube Thumbnail Preview Tool – Search Size Check, Upload a thumbnail and see it at real YouTube search size.
- YouTube Tag Extractor & Formatter – 500-Char Limit, Clean, dedupe, and fit tags to YouTube 500-character limit.
- YouTube to Blog Post Converter – Transcript to Article, Turn a transcript into a structured blog post with VideoObject schema.
- YouTube Thumbnail A/B Tester – Clickability Poll, Upload two thumbnails and poll which gets the click.
- YouTube Thumbnail Downloader – All Resolutions Free, Download any YouTube thumbnail in max resolution.