Calculate your exact age in years, months, and days from your birthdate. Find out how old you are down to the minute. Free online tool. This tool runs entirely in your browser — no data is sent to any server. It's fast, free, and works on any device.
Calculating age sounds simple — subtract the birth year from the current year — but the exact calculation is trickier than it looks. Whether someone has had their birthday yet this year, the varying lengths of months (28, 29, 30, or 31 days), and leap years all affect the precise count. This age calculator handles all edge cases and gives you the exact age in years, months, and days, plus fun conversions like total hours or days lived. It's useful for verifying age for official documents, calculating someone's age at a historical event, checking the exact duration between any two dates, or just satisfying curiosity about how many days you've been alive.
The calculator counts complete years, then complete months in the current year, then remaining days. Leap years and month lengths are all handled correctly to avoid off-by-one errors.
Yes! Set both the start date and end date to any dates in the past or future. The tool calculates the exact duration between the two dates.
Leap day birthdays officially occur on Feb 28 in non-leap years (in most jurisdictions). The calculator handles this correctly when computing age across non-leap years.
The universe is estimated to be about 13.8 billion years old, formed after the Big Bang. You can enter approximate dates to explore astronomical time scales for fun!
Yes! Set your birth date and select your next birthday as the end date to see exactly how many days are left.