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Age Calculator — Free Online Tool
Type in a date of birth and this age calculator tells you exactly how old someone is today in completed years, months and days. It accounts for the different lengths of months, so a person born on 31 January is not mistakenly aged by a fixed 30-day month. That precision matters more often than you might expect. Indian students use it to check whether they meet the minimum or maximum age on the last date of an entrance exam or government job notification, parents use it to confirm a child's age for school admission cut-offs, and anyone filling out forms for a passport, insurance policy or pension may need an exact figure. You can also use it to find out how old a family member will be on a milestone birthday, or to work out how long ago an event occurred. The date picker uses your device's calendar, so entering a past date is quick on both mobile and desktop. Results are calculated in your browser against your device's current date and nothing about your birth date is stored or sent anywhere. For counting the days between two particular dates, use the Date Calculator, and pair this tool with the BMI Calculator when checking health metrics.
Use our Age Calculator on AllConvertor — no registration, no download, works on iPhone, Android, Windows, and Mac. All processing runs in your browser when possible for maximum privacy and speed.
How to use Age Calculator
- Click the Date of Birth field and pick your birth date.
- Press the Calculate button.
- Read your age in years, months and days.
- Change the date to check another person's age.
Key benefits
- ✓ 100% free — no paywall or trial limits
- ✓ No account or email required
- ✓ Mobile-friendly responsive design
- ✓ Instant results in your browser
- ✓ Secure — data stays on your device
- ✓ Trusted by thousands of users daily
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Frequently Asked Questions
How do I calculate my exact age?
Select your date of birth and press Calculate. The tool subtracts the date from today's date and shows completed years, months and days.
Can I use this for exam or job age eligibility?
It gives your age as of today. For eligibility, you need the age on the cut-off date in the notification, so compare your date of birth against that date, and also check any category-wise age relaxation mentioned there.
Does it handle leap years and different month lengths?
Yes. The calculation borrows days from the previous month correctly, so ages are accurate across leap years and 28, 30 or 31-day months.
Is my date of birth stored?
No. The calculation happens in your browser and the date is never uploaded.
Can I find age on a past or future date?
This tool calculates age as of today. To measure the gap between your date of birth and any other date, use the Date Calculator.