About Date & Time Calculators
Work with dates and times efficiently. Calculate age, find date differences, convert timestamps, work across timezones, and create countdowns. All tools are free, require no registration, and provide instant results.
Available Tools (8)
Age Calculator
Calculate your exact age in years, months, weeks, days, and more. Find birthday day of week and z…
Date Difference Calculator
Calculate the number of days, weeks, months, or years between two dates. Free date difference cal…
Unix Timestamp Converter
Convert Unix timestamps to readable dates and vice versa. Free epoch time converter with timezone…
Timezone Converter
Convert times between world time zones instantly. Free timezone converter with DST awareness.
Countdown Timer
Calculate days until an event or create a live countdown timer. Free countdown calculator.
Stopwatch
Free online stopwatch with lap time recording. Accurate timing for workouts, cooking, and more.
Date Add/Subtract
Add or subtract days, weeks, months, or years from any date. Free date addition calculator.
Week Number Calculator
Find the ISO week number for any date. See current week number and year calendar view.
Features
- All tools are completely free to use
- No registration required
- Instant results with no page reloads
- Works on desktop, tablet, and mobile
- Dark mode support
Frequently Asked Questions
How do the timezone conversions handle daylight saving time?
Our timezone converter uses your browser's built-in timezone database, which includes DST rules. Results reflect the correct time including any DST adjustments.
What calendar system do these tools use?
All date tools use the Gregorian calendar, which is the standard calendar used internationally for civil purposes.