Free Online Age Calculator
A free age calculator finds your exact age in years, months, and days from your date of birth. Enter your birthday and see your age plus days until your next birthday — no signup needed.
Enter a date of birth to get precise age in years, months, and days — plus how many days until the next birthday. Useful for forms, eligibility checks, and personal milestones. Calculates locally in your browser. Free, no signup.
Runs 100% in your browser. Your data never leaves your device.
Date arithmetic using native JavaScript Date objects — no external date libraries, all calculations local.
How to Use Age Calculator
- Select your date of birth using the date picker
- Your age in years, months, and days appears instantly
- See how many days remain until your next birthday
- Change the date anytime to calculate someone else's age
When Would You Use This?
Parents filling school admission forms need exact age in years and months — a date picker beats counting manually from a birth certificate.
HR staff verifying minimum age requirements for job eligibility get precise day-level answers instead of rough estimates.
Anyone planning a milestone birthday party checks days remaining to settle debates about which year counts as the 'big one'.
Frequently Asked Questions
- Is this age calculator free to use?
- Yes, completely free. No signup, no login, no payment ever.
- Do I need to create an account?
- No account needed. Open the tool and start using it immediately.
- Is my data safe?
- Everything runs in your browser. Your date of birth is never uploaded to our servers.
- Does it account for leap years?
- Yes. Age is calculated using actual calendar dates, including leap years and varying month lengths.