⏳ Countdowns • ⌛ Duration timers • 🧮 Date math
Countdown Timer & Time Calculator
Count down to any date and time, run a duration timer, add or subtract time, or calculate the time between two dates. Fast, private, and designed to run locally in your browser.
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How this tool works
- Count down to a future date and time
- Run a duration timer for sessions or breaks
- Add or subtract time from a base date
- Measure time between two dates
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FAQ
Does this countdown timer run locally?
Yes. The countdown timer and time calculations run in your browser. No login is required.
Can I count down to a specific date and time?
Yes. You can set a target date and time, start the countdown, and copy the result to share.
Can I calculate time between two dates?
Yes. The Time Between tab calculates the total time difference in seconds, minutes, hours, and days.