Date & Time
Work out dates, durations, working days and time zones. Everything runs in your browser, so your files never leave your device.
Days, weeks, months, years, hours or minutes between two dates.
Add or Subtract Days from a Date · Age Calculator · Date Difference Calculator · Days Between Dates · +10 more
Exact age in any unit, and how long until the next birthday.
Age in Days Calculator · Age in Hours Calculator · Age in Minutes Calculator · Age in Months Calculator · +4 more
Move a date or a time forward or back by any amount.
Add or Subtract Hours · Add or Subtract Minutes · Add or Subtract Months · Add or Subtract Seconds · +3 more
Business days, timesheets, overtime, week numbers and quarters.
Business Days Calculator · Fiscal Year Calculator · ISO Week Calculator · Overtime Calculator · +7 more
IST, EST, PST, UTC, GMT, CET, JST and AEST, in both directions.
EST to IST Converter · EST to PST Converter · GMT to IST Converter · IST to AEST Converter · +16 more
Unix epoch, milliseconds, ISO 8601 and RFC 2822.
Date to Unix Timestamp · ISO 8601 Converter · RFC 2822 Date Converter · Unix Timestamp Milliseconds Converter · +1 more
Day of week, leap years, days in a month, printable calendars.
Date to Day of Week · Day of Week Calculator · Days in Month Calculator · Days in Year Calculator · +5 more
Other categories
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Or see every tool in one list.