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ASCII Lookup: The 128 Characters Everything Agrees On

September 12, 2026

ASCII is the agreement that every computer made in the 1960s about what letters, digits, and punctuation map to which numbers. Sixty years later the first 128 codes are still the backbone of every text protocol.

Search characters, decimal, hex, or binary to read the full ASCII table. It settles the “is that a special character or am I hallucinating” question and explains why a space has both a name and a number.

Try it now: open the free tool, runs 100{ddff9936f8333f09603555df7bd6492034f3a4a35de784276d3cf3d66166a113} in your browser.

Bottom line: search by character or code, ASCII stays the lowest common denominator.

Your turn: use the tool free here, no signup, nothing leaves your device.

How do you use ASCII Code Lookup Table?

Open the ASCII Code Lookup Table in your browser (Searchable reference for character code numbers). Type or paste your input, adjust the options, and copy the result. Everything runs locally on your device with no account and nothing stored, so the three steps below take seconds even for confidential work.

  1. Paste or type the value you want converted into the input box.
  2. Pick the units or format you are converting between.
  3. Read the converted result and copy it with the copy button.

Try ASCII Code Lookup Table free. It opens right in your browser.

Questions & answers

Is ASCII Code Lookup Table free to use?

Yes. It is part of the free PrimeFreeTools collection. No account, no sign-up, no hidden limits.

Does ASCII Code Lookup Table upload my data?

No. The tool runs entirely in your browser. The code ships as static files and anything you type never leaves your device.

What does ASCII Code Lookup Table give me as output?

Search characters, decimal, hex, or binary to read the full ASCII table. The result appears instantly below the input with a copy button, and nothing is saved on a server.