Date & Time
Age Calculator
Calculate your exact age from your date of birth.
Your last 50 calculations are stored only in this browser, not in a CalcOcean account. Anyone using this browser profile can see them. Clear history on shared devices. Calculation history
How this calculation works
Calculate your exact age from your date of birth. Enter the date of birth; the calculator compares it with today to return completed years.
Formula used
A = yₙ − yᵦ − δ
Good to know
Results are estimates for informational purposes.
Example calculation
2026-09-01 − 2000-09-01 = 26
How to use this calculator
- Enter the date of birth; the calculator compares it with today to return completed years.
- Check units and time periods before comparing two results.
- Change one input at a time to understand its effect.
Frequently asked questions
What does the Age Calculator calculate?
Calculate your exact age from your date of birth. The result is calculated from the values you enter and the formula shown on this page.
Which assumptions does the Age Calculator use?
It applies A = yₙ − yᵦ − δ. Values, fees, rules or timing not represented by an input are not added automatically.