Date & time.
Count days, calculate an age and work out elapsed time.
3 calculators
Age
Calculate completed years of age and days between a birth date and another date.
Date difference
Count the days or weeks between any two calendar dates.
Date & time duration
Find the days, hours and minutes between two dates and times, including overnight shifts.
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Counting days, ages and hours correctly
Dates look simple until a month has 31 days, a year is a leap year or a deadline falls on a weekend. The date difference calculator counts the exact number of days between two dates, which helps with notice periods, contract lengths and countdowns.
The age calculator gives an exact age in years, months and days, useful for forms, school admissions and eligibility checks such as pension or benefit ages. For shifts, timesheets and travel, the time duration calculator adds up hours and minutes, including periods that run past midnight. To find out when you can claim the State Pension, use the State Pension age calculator.
All three run in your browser, so the dates you enter are never sent anywhere.