Add/Subtract Days

Add or subtract days from a date, optionally counting business days only. Runs in your browser.

Runs in your browser — your file never leaves your device

Frequently asked questions

Is Add/Subtract Days free to use?

Yes — Add/Subtract Days is completely free with no limits, no watermarks and no sign-up. It runs in your browser, so there is nothing to pay for.

Are my files uploaded or stored anywhere?

No. This tool does all its work locally in your browser using your own device's power. Your files never leave your device and we never see them.

Do I need to install anything or create an account?

No installation and no account needed. Add/Subtract Days works on any modern browser — Windows, Mac, Linux, Android and iPhone.

How do I use Add/Subtract Days?

Open the tool, add your file (or paste your content), adjust any options, then press “Calculate date”. Your result is ready to download in seconds.

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