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📆 Date math

Date Calculator

Add or subtract time from any date for renewal planning, filing deadlines, trips, trials, and billing cycles.

Free browser tool Inputs are processed locally in your browser. Results are estimates for planning, scheduling, and everyday reference.

Add or subtract from a date

Useful for

Free trial end dates, card payment planning, renewal dates, trip planning, tax document reminders, and subscription cancellation windows.

Month behavior

When adding months, browser date math may roll dates near month-end. Always confirm critical deadlines with the official source.

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FAQ

Can this add business days only?
Use the business days calculator for weekday-only counting.
Does this include holidays?
No. It uses simple calendar math in your browser.
What timezone is used?
Your browser timezone is used for display and calculation.