Date of birth calculator
Calculate age from a date of birth
Enter a date of birth to see the exact age in years, months and days. Useful for school enrollment, retirement, forms and eligibility checks.
Age calculator
Exact age
26 years, 5 months, 13 days
Born on Saturday, January 1, 2000 (a Saturday).
Total months
317
Total weeks
1,380
Total days
9,661
Next birthday: Friday, January 1, 2027 (201 days away, turning 27).
Frequently asked questions
- How do I calculate my age from my date of birth?
- Enter your date of birth in the first field and the reference date in the second field. The calculator shows your exact age in years, months and days.
- What can I use my date of birth calculation for?
- Common uses include school enrollment cutoffs, retirement eligibility, passport renewal timing, insurance age brackets and legal age verification.
- Does this work for past dates?
- Yes. Change the "Age on" field to any date in the past to see how old you were at that time.
- How accurate is the date of birth calculator?
- The calculation uses calendar dates and accounts for leap years, varying month lengths and the exact number of days between dates.