Age Calculator works out the exact time between a date of birth and today, or any other date you choose, in years, months and days. It also shows the total number of months, weeks and days lived, and how many days are left until the next birthday.
It's handy for application forms that ask for your age on a specific date (common for job, exam and school admissions), for checking eligibility limits, or just out of curiosity. Leap years and months of different lengths are handled correctly.
How to use the Age Calculator tool
- Enter the date of birth.
- Keep today's date, or choose another 'age on' date, such as an application deadline.
- Click Calculate age.
- Read the exact age and the other statistics.
Features
- Exact age in years, months and days.
- Age on any past or future date.
- Totals in months, weeks and days.
- A countdown to the next birthday.
- Correct handling of leap years and month lengths.
Tips for best results
Many government job and university forms ask for age 'as on' a cut-off date. Enter that date in the second field instead of today's. People born on 29 February celebrate on 28 February in non-leap years in this calculator's birthday countdown.
Calculating age by subtracting years only works if the birthday has already passed this year. Months and days are trickier still, because months have 28 to 31 days. This calculator follows the same method most official forms use: complete years first, then complete months, then the remaining days.
Compatibility and limits
The Age Calculator gives results instantly as you type and works on phones, tablets and computers. Results are rounded for display but calculated at full precision. The numbers you enter are not saved, so refreshing the page starts a new calculation. Results are estimates for general information, so for important medical, legal or financial decisions, please check with a qualified professional.
Privacy: your files never leave your device
All calculations happen in your browser. The numbers you enter, such as dates of birth, weights or loan amounts, are never sent to a server or stored.
Frequently asked questions
How is exact age calculated?
Full years are counted first, then full months, then the remaining days, using the real length of each month.
Can I calculate age on a future date?
Yes. Enter any date in the 'Age on this date' field.
What about leap years?
They are included automatically, so total days are exact.
Is my date of birth stored?
No. The calculation runs only in your browser.
Can I calculate the difference between any two dates?
Yes, but our Date Calculator is designed for that and can also add or subtract days.