Support: Age Calculator

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Common questions

How is age calculated?

Complete years since the date of birth, then complete months since the last birthday, then the days left over. Leap years are included because the calendar itself is counted, not an average year length.

How do I find age as on a particular date?

Put that date in the Age on box. The age is worked out for that day, which is what exam, job and admission forms mean by age as on a date.

Am I counted as older on my birthday?

Yes. On the birthday itself the new age is reached, and on the day before you are still the younger age, which is how most forms and laws count it.

What if I was born on 29 February?

In leap years the birthday is 29 February. In other years this calculator shows it on 28 February; some countries use 1 March for legal purposes, so check if it matters for a document.

How many days old am I?

The Days figure is the exact number of days from the date of birth to the Age on date. The facts also show when you are or were 10,000 days old.

Can I work out the age of something other than a person?

Yes. Enter any start date, such as a company's founding, a wedding or a pet's birth, and the result is the time since then.

Does time of birth matter?

Not here: ages are counted in whole days. If a cut-off depends on the hour of birth, the official rules will say so.

Is it free?

Yes, completely free, with no sign-up.