Calculators
About Age Calculator
This calculator works out exactly how old someone is. Enter a date of birth and it shows the age in years, months and days, plus the total number of weeks and days lived and the number of days until the next birthday. The second date is set to today by default, but you can change it to find the age at any date in the past or future, such as for a school admission cut-off, an exam, a visa form or a milestone.
It counts whole calendar dates. Months are counted first and the days left over are added, and if you were born on the 31st the month end is handled correctly, so you never get a negative number of days. A person born on 29 February has their birthday counted on 1 March in years that are not leap years.
Everything is calculated in your browser and the dates you enter are not stored or sent anywhere.
Who uses it and when
Forms and applications
Get an exact age for school, visa, insurance or job forms.
Cut-off dates
Check how old a child will be on a particular admission or exam date.
Milestones
See how many days old you or someone else is, and when the next birthday falls.
Family and records
Compare ages on the same day by changing the second date.
Why use this Age Calculator
An exact age in years, months and days.
Age at any date
Use today or pick any past or future date.
Next birthday
See the number of days left until the next birthday.
Private
The calculation runs in your browser.
How it works
Enter the date of birth
Pick the date in the first box.
Check the second date
It is today by default. Change it to find the age on another day.
Click Calculate Age
Read the years, months, days, total weeks and total days.
Frequently asked questions
How is age calculated?
The tool counts the full years and months between the two dates, then the days left over. It also shows the total days and weeks.
Can I find the age on a future date?
Yes. Change the second date to any date after the date of birth.
What happens with a 29 February birthday?
In years that are not leap years, the next birthday is counted as 1 March.
Are my dates saved?
No. Nothing is uploaded or stored.
Related tools
Overview
What Is Age Calculator?
Calculate your exact age in years, months, weeks, and days.
User Guide
How To Use Age Calculator
- 1 Open the Age Calculator interface in your desktop or mobile browser.
- 2 Input or upload your source data, file, or parameters into the designated workspace fields.
- 3 Adjust any optional configuration settings or conversion toggles according to your requirements.
- 4 Click the primary action button to generate your output instantly.
- 5 Copy the resulting text, code snippet, or formatted file directly to your clipboard or local device.
Capabilities
Key Features of Age Calculator
100% Free & Unlimited Usage
No registration, subscriptions, or hidden limits. Process as many files or items as you need.
Privacy-Focused Processing
All operations execute locally in your client web browser. Your sensitive files and data never touch external servers.
Cross-Platform Compatibility
Fully responsive design optimized for desktop workstations, laptops, tablets, and smartphone displays.
Instant Real-Time Output
Zero server queuing delays. Results are calculated and rendered immediately upon user input.
Client-Side Privacy & Security Guarantee
Your privacy is our priority. Age Calculator executes processing entirely within your browser environment. Your input data, text, files, and credentials are never transmitted to external servers or stored in remote databases.
FAQ
Frequently Asked Questions
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