Age Calculator
Age Calculator: find your exact age from your date of birth in years, months and days, and see the same age in months, weeks, days, hours, minutes and seconds, all in one result. Wondering how old you are, how many months old you are, how many days old you are or what your age in seconds is? Enter your date of birth and the calculator answers every one of them at once, together with the weekday you were born and the days left until your next birthday. Pick a date in the optional Age on this date box to calculate your age on any past or future date. For example, someone born on 15 March 1995, checked against 17 September 2026, is 31 years, 6 months and 2 days old, which is 378 months, about 1,644 weeks or 11,509 days. It is useful for forms, school admissions, job applications, passports, insurance and birthdays. The calculation follows the real calendar, so leap years and different month lengths are handled automatically instead of simply dividing the days by 365.
How to use Age Calculator
Step-by-step guide to the boxes below. Open it only if you need help.
How to use Age Calculator
Step-by-step guide to the boxes below. Open it only if you need help.
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1
Your birth date Date
Tap the box and pick the day you were born. If the calendar opens on this year, choose the year first and then the month, it saves a lot of scrolling.
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2
Age on this date Date optional
You can skip this box. Leave it empty and the tool counts up to today. Pick another date, for example the day you plan to apply for something, to see your age on that day.
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3
Press “Calculate Age”
Click the button under the boxes. If something is missing or not valid, a short message tells you which box to fix.
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4
Read your result
You get your age in years, months and days first, then the same age as total months, weeks, days, hours, minutes and seconds, the weekday you were born and the countdown to your next birthday. Change any box and try again to compare different numbers.
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