Calculators
About the Age Calculator
The Age Calculator is a free online calculator from Toolbench. Exact age in years, months and days, plus next birthday. Enter your numbers and the answer — with the formula used — updates as you type.
- Category
- Calculators
- Price
- Free
- Account
- Not required
- Runs
- Entirely in your browser
How to use the Age Calculator
- Enter the values (date of birth, age on).
- Read the result — it updates as you type.
- Check the breakdown rows to see exactly how it was calculated.
Worked example
| Date of birth | 1990-06-15 |
|---|---|
| Age | 36 years, 3 months, 12 days |
| Total months | 435 |
| Total weeks | 1,893 weeks, 2 days |
| Total days | 13,253 |
| Total hours | 318,072 |
| Born on a | Friday |
Formula: Age is counted in whole calendar years, then remaining months, then days — the same way people state their age — so leap years and month lengths are handled exactly.
Inputs
| Date of birth | Default: 1990-06-15 |
|---|---|
| Age on | Date (defaults to today) |
Privacy
Everything runs in your browser: what you type or paste is processed by JavaScript on your device, not on a server. If you are signed out, nothing is saved at all. If you sign in with Google, your inputs and settings are saved privately to your account so they sync across devices.
Frequently asked questions
Is the Age Calculator free?
Yes. Age Calculator is completely free with no sign-up, no usage limits and no watermarks.
Is my data private?
Yes. The Age Calculator processes everything in your browser. Signed out, nothing is saved; signed in, your inputs sync privately to your own account.
How does the age calculation work?
Age is counted in whole calendar years, then remaining months, then days — the same way people state their age — so leap years and month lengths are handled exactly.
Does it work on my phone?
Yes. Toolbench runs in any modern browser on desktop, tablet or phone — there is nothing to install.
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