Age Calculator
Calculate your exact age in years, months, weeks, days, hours and minutes. Find out how long until your next birthday too!
How to use the Age Calculator
- 1
Select your date of birth — from the date picker above.
- 2
Instant results — your age in years, months, weeks, days, hours and minutes appears immediately.
- 3
Next birthday — see exactly how many days until your next birthday.
Age Calculator – Free Online Tool
Calculate your exact age in years, months, days, hours and minutes.
What is the Age Calculator?
The free online Age Calculator is a precision tool that determines your exact chronological age or the time span between two distinct dates. By inputting your date of birth, it instantly processes leap years and varying month lengths to output your exact age in years, months, weeks, days, and even minutes.
Who uses a date of birth calculator?
This tool is heavily used by HR professionals verifying age requirements, parents calculating their infant's age in exact months or weeks (e.g., '18 months old'), genealogists tracking life spans, and individuals curious about their exact time spent on Earth leading up to a milestone birthday.
Why is calculating age manually difficult?
Figuring out the exact number of days between two dates is mathematically complex due to leap years (adding a day in February every 4 years) and irregular month lengths. Our algorithm factors in these calendar quirks instantly to guarantee 100% mathematical accuracy.
Frequently Asked Questions
Everything you need to know about the Age Calculator.
Does the calculator account for leap years?
Yes. The algorithm handles the complete Gregorian calendar rules, automatically adding an extra day for any February 29th that occurs during the lifespan being calculated, ensuring perfect accuracy to the day.
Can I use this to find the difference between ANY two dates?
Absolutely. While it defaults to comparing your birth date against today's current date, you can easily change the 'End Date' to a future or past date to calculate exact project durations, contract lengths, or historical timelines.
Is my birth date privacy protected?
Yes. The calendar calculation happens entirely localized within your web browser. Your birth date is not transmitted over the internet, stored in cookies, or collected by our servers in any way.