Tools / Calculators / Date difference and age
Date difference and age calculator.
Count the time between two dates, or find an age and the next birthday. Results update as you type.
Date difference
How long from one date to another.
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Age
Age on a given date, and the next birthday.
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Dates are counted in calendar months and days, so a month can have 28 to 31 days. A birthday on 29 February falls on 1 March in years that are not leap years. Everything is calculated in your browser.