Age Calculator
9 toolsCalculate exact age from a birthdate.
Runs in your browser — your files and text stay on your device
A complete date and time toolkit — convert Unix timestamps, calculate exact age or the difference between two dates, check the world clock across timezones, run a countdown or stopwatch, add business days, or look up a week number. Everything runs locally in your browser.
Timestamp ConverterAge CalculatorDate DifferenceTimezone ConverterWorld ClockCountdown TimerStopwatchBusiness Days CalculatorWeek Number Lookup
Pick a date of birth
How to use this tool
- 1Pick a date of birth.
- 2Your exact age in years, months, and days appears automatically.
Frequently asked questions
Why not just show age in years?
A full breakdown is more precise than a rounded number — useful for legal, medical, or eligibility purposes.
Is my birth date stored anywhere?
No — it stays in your browser tab only.