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Sunrise/Sunset Calculator
By date and location.
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About Sunrise/Sunset Calculator
Enter date and latitude/longitude for approximate sunrise, sunset, and day length.
📐 Methodology & Reference Accuracy:
Calculations, formulas, and conversions execute locally in your web browser. Output models are benchmarked against official reference standards and updated for 2026.
🔒 This tool runs entirely in your browser. Nothing is uploaded or stored.
Background reading: Sunrise Sunset on Wikipedia. More: all calculators.
Frequently Asked Questions about Sunrise/Sunset Calculator
How do I use the Sunrise/Sunset Calculator?
Open the Sunrise/Sunset Calculator and use the controls in the workspace below: by date and location. Results appear instantly in your browser, with nothing to install, sign up for, or pay for.
Is the Sunrise/Sunset Calculator free?
Yes. The Sunrise/Sunset Calculator is completely free, like every tool in the PrimeFreeTools library. There are no accounts, subscriptions, or usage limits.
Does the Sunrise/Sunset Calculator store or share my data?
No. The Sunrise/Sunset Calculator runs with JavaScript in your browser, so what you enter never leaves your device and nothing is stored on a server.
What can I use the Sunrise/Sunset Calculator for?
Enter date and latitude/longitude for approximate sunrise, sunset, and day length. You will find it grouped under Calculators together with 116 other free tools on the PrimeFreeTools homepage.
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