TOOLFree date & time tools
From counting down to a deadline to converting a meeting time across time zones, these tools cover the everyday date-and-time jobs. Each runs entirely in your browser using standard, accurate date logic — fast, free and private.
Count down with the countdown timer, check days until a date, count business days, or convert across zones with the timezone converter. For the gap between two dates, see the date difference calculator.
Why date math is easy to get wrong
Dates look simple but hide traps: months have different lengths, leap years add a day every four years, weekends interrupt working-day counts, and time zones shift by an hour twice a year for daylight saving. Do the arithmetic by hand and it's easy to be a day out — which matters when it's a deadline, a delivery, or a contract's notice period. These tools apply the standard calendar rules for you, so the answer is right the first time.
Which date tool do you need?
- Days until — the number of days from today to a future date.
- Countdown timer — a live countdown ticking down to the second.
- Add or subtract days — jump forward or back to find a new date.
- Business days — count working days, skipping weekends.
- Time duration — the hours and minutes between two times.
- Time zone converter — the same moment in another part of the world.
Need the exact span between two calendar dates, or someone's age? Use the date difference and age calculators.