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Calculate your exact age in years, months, and days. See total days lived, the day you were born, and days until your next birthday.
Pick a date of birth using the date picker.
Your exact age in years, months, and days appears instantly.
See your total days lived, the day you were born on, and days until your next birthday.
An age calculator works out exactly how old someone is from their date of birth: the precise count of years, months, and days, not just a rough number. It handles leap years, different month lengths, and time zones so the answer is exact.
Enter a birth date and the calculator shows the current age instantly, along with totals like age in months, weeks, days, and even hours. You can also calculate age at any specific date, which is useful for forms, eligibility checks, and official documents.
The calculator counts complete years from the birth date, then complete months, then remaining days. Someone born on 15 March 2000 is, on 9 July 2026, exactly 26 years, 3 months, and 24 days old. Month lengths differ and leap years add days, which is why doing this by hand often lands one day off.
People born on 29 February have a real birthday only every four years. For legal and everyday purposes, most places treat 1 March as the birthday in common years, and this calculator follows the standard convention while still counting the exact days correctly.
School enrollment cutoffs, visa and passport applications, insurance policies, retirement eligibility, and medical dosing can all depend on a precise age at a specific date. Calculating age at a chosen date rather than today answers exactly the question these forms ask.
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