Exact age, down to the day
Enter a date of birth and get an exact age in years, months, and days — plus total days lived and how long until the next birthday (and which weekday it lands on). Set the “as of” date to answer questions like “how old was she on June 1, 2020?”.
Frequently asked questions
How is the exact age calculated?
Calendar-accurate: whole years first, then whole months, then remaining days, accounting for different month lengths and leap years — the same way ages are reckoned legally.
Can I calculate age at a date other than today?
Yes — change the “age as of” date to compute age at any past or future date, useful for forms and eligibility cutoffs.
Is my date of birth stored?
No. The calculation runs in your browser and nothing is saved or transmitted.