How it works
Pick your date of birth and we compute your exact age and time until your next birthday in your browser.
In detail
An age calculator counts the completed years, months and days between a date of birth and today. It is useful for eligibility checks (age limits, retirement, benefits), forms, and curiosity.
How the count works
- Years are counted as completed years.
- Remaining months and days are counted after the last birthday.
- Leap years are handled automatically by the calendar math.
For planning how long until you retire, see the retirement countdown.
This calculator provides estimates only. Tax rules, bands and rates change every tax year — verify against the official source (HMRC) or a qualified adviser before relying on any number.
FAQ
Is the age exact to the day?
Yes — it counts completed years, months and days from your birth date to today.
Does it account for leap years?
Yes, the calendar calculation handles leap years automatically.
Can I use it for eligibility checks?
It gives an exact age, but always confirm the specific rule (some use age on a particular date).
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