Age Calculator
Calculate your exact age in years, months, days, hours, and minutes from your date of birth.
- Enter your date of birth using the date picker.
- Optionally set a reference date other than today to calculate age as of a specific day.
- Your exact age displays in years, months, days, hours, and minutes.
- Handy for eligibility checks, forms, or just satisfying curiosity.
All processing happens entirely in your browser. Your data never leaves your device.
Key Features
- Calculate exact age in years, months, days, hours, and minutes
- Custom reference date — check your age on any past or future date
- Handles leap years and varying month lengths correctly
- Instant calculation with no server communication
- Clean, mobile-friendly interface
About Age Calculator
An age calculator determines the exact elapsed time between a date of birth and a reference date (usually today). While calculating years is straightforward, getting the exact breakdown into years, months, and days requires careful handling of varying month lengths and leap years.
Age calculation is needed for legal eligibility checks (voting age, drinking age, retirement age), medical assessments, insurance applications, school enrollment deadlines, and countless forms that ask for your exact age.
ForgeKit's Age Calculator computes your precise age in years, months, days, hours, and minutes. You can also set a custom reference date to calculate what your age was (or will be) on any specific day. All calculations run in your browser — no data is sent anywhere.
Frequently Asked Questions
Yes. The calculator correctly handles leap years (years divisible by 4, except centuries not divisible by 400) when computing exact age in days.
Yes. You can set any date — past or future — as the reference date, and the calculator will show the time difference.
The calculator uses calendar months. For example, from January 31 to February 28 is counted as 1 month, even though it's only 28 days.