❓ Frequently Asked Questions
Everything you need to know about our age calculator
Our age calculator is extremely accurate. It takes into account leap years, varying month lengths, and calculates your age down to the exact day. The calculation is based on the Gregorian calendar and considers all edge cases including February 29th birthdays.
If you were born on February 29th (a leap year birthday), our calculator handles this correctly. For non-leap years, your birthday countdown will show March 1st as the next celebration date. Your age calculation remains accurate regardless.
Absolutely! You can calculate anyone's age by entering their date of birth. This is useful for determining the age of family members, friends, historical figures, or for official documentation purposes.
No, your data is never stored or shared. All calculations are performed directly in your browser using JavaScript. No data is sent to any server. Your privacy is completely protected.
Our calculator shows your age in years, months, days, total months, total weeks, total days, total hours, total minutes, and total seconds. You also get information about what day of the week you were born and a countdown to your next birthday.
About Our Age Calculator Tool
Our free online age calculator is designed to give you the most accurate age calculation possible. Whether you need to know your exact age for a legal document, a medical form, or just out of curiosity, our tool provides comprehensive results instantly.
How Age Calculation Works
Age is typically calculated from the date of birth to the current date. Our calculator uses the Gregorian calendar system and accounts for:
- Leap years — Years divisible by 4 (except centuries not divisible by 400)
- Varying month lengths — From 28 to 31 days depending on the month
- February 29th birthdays — Special handling for leap day babies
- Timezone considerations — Calculation based on your local date
Common Uses for Age Calculators
Age calculators are widely used for various purposes including:
- Government and legal documentation requiring exact age
- School and university enrollment age verification
- Insurance and financial planning age requirements
- Medical records and healthcare assessments
- Retirement planning and eligibility checks
- Fun — finding out exactly how many days you've been alive!
Why Choose CalcTools?
CalcTools provides fast, reliable, and privacy-focused calculation tools. All calculations happen in your browser — we never store your personal data. Our tools are free to use, mobile-friendly, and designed with accessibility in mind.