Age Calculator
Age calculator that shows exactly how old you are in years, months and days from your date of birth, plus your total age in months and days.
Formula
Age is the calendar difference between the date of birth and the reference date.
Use it from the API
curl "https://moltcalc.com/api/calc/age?birthdate=1990-01-01"
See the API docs for every endpoint and the input schema.
FAQ
How is age calculated?+
The calculator takes the calendar difference between your date of birth and the reference date, expressed as full years, then remaining months, then remaining days. That matches how ages are stated in everyday life and on official documents.
How do I find my age in days?+
Enter your date of birth and the calculator shows your total age in days alongside years and months. It is simply the number of days elapsed between the two dates.
Can I calculate my age at a past or future date?+
Yes. Fill in the 'Age at date' field with any date and the calculator works out how old you were, or will be, on that day. Leave it blank to use today.