Date & Time

31 tools · free · no sign-up

Countdowns, age calculators, timezone converters, date maths

Time

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⭐ FEATURED

Time Calculator

Add and subtract hours, minutes and seconds. Running total mode for timesheets, or calculate the time between two clock times

Timezone Converter

Convert times between 20+ world timezones instantly. Quick buttons for popular routes like London to New York, London to Tokyo

World Clock

See current time in multiple cities around the world simultaneously with live updating display and add or remove cities

Days to Hours Converter

Convert days to hours instantly. Free days to hours converter for time calculations.

Days to Weeks Converter

Convert days to weeks easily. Free days to weeks converter for time calculations.

Hours to Days Converter

Convert hours to days easily. Free hours to days converter for time calculations.

Hours to Minutes Converter

Convert hours to minutes instantly. Free hours to minutes converter for time calculations.

Minutes to Hours Converter

Convert minutes to hours easily. Free minutes to hours converter for time conversion.

Online Stopwatch

Online stopwatch with start, stop, reset and lap timer showing elapsed time in hours, minutes, seconds and milliseconds

Weeks to Days Converter

Convert weeks to days instantly. Free weeks to days converter for time conversion.

Date

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Custom Countdown Timer

Create a beautiful countdown to any date and time. Set an event name, target date, and watch the live countdown. Shows weeks, days, hours, minutes, and seconds.

Date Difference Calculator

Calculate the exact difference between two dates or add and subtract days, weeks, months and years from any date. Includes business days, weekends and quick presets

Date Format Converter

Convert dates between UK, US, ISO, written and Unix timestamp formats with auto-detection and copy buttons for each format

Date Format Converter

Convert any date into every major format including US (MM/DD/YYYY), UK (DD/MM/YYYY), ISO 8601, Japanese and more. Never confuse 03/04 again.

Leap Year Checker

Check if any year is a leap year with explanation of the rule and a list of the next 10 upcoming leap years

Week Number Calculator

Find the ISO week number for any date plus day of week, day of year and days remaining with optional year calendar view

Countdown

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Birthday Countdown

Track the countdown to your next birthday. Shows your current age, zodiac sign, days lived, and fun birthday facts. Enter your birth month and day to get started.

Custom Countdown Timer

Create a beautiful countdown to any date and time. Set an event name, target date, and watch the live countdown. Shows weeks, days, hours, minutes, and seconds.

Online Timer

Free online countdown timer with preset durations, custom time input, visual progress ring, and audio alert. Set a timer and let it run in the background.

Days Until Calculator

Count down the days until any date or event. Quick presets for Christmas, New Year, Easter and more. Shows weeks, months and sleeps

US Election Countdown

Countdown to upcoming US elections and voting dates. Shows days until election day, early voting dates and voter registration deadlines.

Other

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Holiday Leave Maximiser

Plan your annual leave strategically by combining with bank holidays to get longest time off.

Sleep Calculator

Find the best time to sleep or wake up based on 90-minute sleep cycles. Get 5-6 complete cycles for optimal rest and energy

Work Days Calculator

Calculate working days between two dates excluding weekends and UK bank holidays with full breakdown of total, weekend and holiday days

Work Hours Calculator

Calculate daily and weekly work hours with break deductions. Track overtime, see monthly estimates in both decimal and HH:MM formats

Unix Timestamp Converter

Convert Unix timestamps to human-readable dates and vice versa. Live current timestamp display with local time, UTC and ISO formats

Working Days Calculator

Calculate the number of working days between two dates, excluding weekends and bank holidays.