Date & time

Timestamps, date maths, ages and durations. Free to use, no sign-up needed.

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12 tools

Unix Timestamp ConverterTurn a Unix timestamp into a readable date, or a date back into a timestamp. Date DifferenceCount the days, weeks, months and hours between two dates. Add Days to a DateAdd or subtract days, weeks, months or years from a date. Age CalculatorWork out an exact age in years, months and days from a date of birth. Seconds to Hours and MinutesTurn a number of seconds into days, hours, minutes and a clock time. Working Days CalculatorCount the weekdays between two dates, with the weekend days listed separately. Week Number CalculatorThe ISO week number for a date, the weekday, and where that week starts and ends. Days Until a DateHow many days, weeks and months there are between today and a date you pick. Day of the WeekFind which weekday any date falls on, for as many dates as you paste in. Leap Year CheckerCheck whether years are leap years, and see the rule that decided it. Hours Between Two TimesWork out a shift length from a start and an end, with the break taken off. Time Zone ConverterMove a date and time between two zones, with daylight saving already handled.

Good to know

Does this use seconds or milliseconds?

The timestamp reader recognises common Unix values in seconds or milliseconds. Converting a date back to a timestamp shows both.

Which timezone is shown?

The date result includes UTC and your browser's local time. Include a timezone in date-and-time input when the exact moment matters.

Can I convert several timestamps?

Yes. Put one timestamp per line.