Date & Time
How to Calculate Your Exact Age (Years, Months and Days)
Calculate your exact age down to hours, find out how many days until your next birthday, and discover interesting life milestones.
Why calculate exact age?
Legal documents, medical forms, and insurance applications often require age in years and months. Knowing your age in days is also surprisingly fun.
How to use the Age Calculator
- Go to ToolCrix Age Calculator.
- Enter your date of birth.
- Instantly see: exact age in Y/M/D, total days lived, hours lived, birthday countdown, and life milestones.
Interesting milestones
- 10,000 days old — around age 27.4.
- 1 billion seconds old — exactly age 31 years, 8 months, 8 days.
- 50 years = 18,262+ days (depending on leap years).
Common use cases
- Visa and passport applications.
- Medical history forms.
- Pension and retirement planning.