Age Calculator
Enter a birth date to get the exact age in years, months and days, plus total days and the next birthday countdown.
Good to know
- Uses the local calendar; leap days are handled by the date arithmetic.
Common questions
How is the age calculated?
Calendar arithmetic from the selected date: whole years, then months, then days, plus total days and the next birthday.
How are leap days handled?
The date arithmetic uses the real calendar, so 29 February is handled without special input.
What happens with a future date?
The tool refuses it, because an age cannot be negative.
Is this tool really free?
Yes. There is no account, no paywall and no usage limit. Tools App is funded by aumenso, the studio behind it.
Is anything I enter uploaded?
No. The tool runs in your browser tab; what you enter is never sent to us and never stored.
Need this built for your business?
aumenso builds websites, branding, SEO, GoHighLevel funnels and custom software for agencies and businesses across North America and Europe. These tools are the same team's work, given away free.