Age Calculator — your exact age, free & in your browser
Enter your date of birth and see your exact age update instantly.
This tool runs entirely in your browser. Your files are never uploaded — they stay on your device.
Enter your date of birth and see your exact age update instantly.
This age calculator works out exactly how old you are today — in years, months and days — straight from your date of birth. It also shows the total number of days you have been alive, which is handy for milestones and fun facts.
Everything is calculated on your device as you type, so the date you enter is never uploaded or stored anywhere. Open it, pick a date, and the result appears immediately.
How to use Age Calculator
- Click the date field and select your date of birth.
- Your exact age is calculated instantly as years, months and days.
- Check the total days lived and the breakdown shown below.
- Change the date any time to recalculate — nothing is saved.
Frequently asked questions
How is the exact age calculated?
We compare your date of birth with today’s date, counting full years first, then the remaining full months, then the leftover days. This handles different month lengths and leap years correctly.
Is my date of birth uploaded or stored?
No. The calculation runs entirely in your browser. The date you enter never leaves your device and nothing is saved when you close the tab.
What happens if I enter a future date?
A date of birth in the future isn’t valid, so the tool shows a gentle prompt to pick a date on or before today instead of a result.
Why does the age change at different times?
Your age is measured against the current date on your device. The day count rolls over at midnight, so the result reflects exactly how old you are right now.
Do I need an account or to install anything?
No. It works in any modern browser with no installation, no account and no cost.