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Online Age Calculator
Age Calculator finds your exact age in years, months, weeks, and days from your date of birth, plus totals in days, hours, minutes, and seconds.
Age
Hint: Y = Years, M = Months, w = Weeks, D = Days, H = Hours, MIN = Minutes, S = Seconds
41Y 11M 0W 4D
995M 4D
2,187W 4D
15,313D
367,512H
22,050,720MIN
1,323,043,200S
From 28 Mar 1981
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To 1 Mar 2023
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What Is This Tool?
The Age Calculator works out exactly how old you are between any two dates. Enter your date of birth and an 'age at' date, and it returns your age broken down into years, months, weeks, and days, along with the elapsed time expressed as total months, weeks, days, hours, minutes, and seconds. Quick yesterday, today, and tomorrow buttons make it easy to set the second date, and two month calendars highlight the start and end days. The result can be downloaded as a PDF.
How to Use This Tool?
- Enter your date of birth.
- Set the 'age at' date, or use the yesterday, today, or tomorrow shortcut.
- Click Calculate to see your age and the elapsed-time totals.
- Download a PDF of the result if you'd like.
Key Features
- Shows your age in years, months, weeks, and days.
- Also gives totals in months, weeks, days, hours, minutes, and seconds.
- Offers yesterday, today, and tomorrow shortcuts for the 'age at' date.
- Displays two month calendars highlighting the start and end dates.
- Lets you download the result as a PDF.
Examples
- Someone born on 28 Mar 1981, measured at 1 Mar 2023, is 41 years, 11 months, and 4 days old.
- That same span is 15,313 days.
- Which is about 367,512 hours.
- Or 1,323,043,200 seconds.
Common Use Cases
- Finding your exact age for forms or applications.
- Counting the days until or since a milestone.
- Working out someone's age on a specific past or future date.
- Comparing ages between two people.
- Seeing your age expressed in different units.
Tips & Best Practices
- Double-check the year on your date of birth before calculating.
- Use the today shortcut for your current age.
- Set a future 'age at' date to see how old you'll be then.
- Note that the years-months-weeks-days line is the most intuitive reading.
- Use the calendars to confirm the start and end days at a glance.
Limitations
- Calculations are based on calendar dates, not the time of day.
- Time zones and daylight-saving shifts are not accounted for.
- The 'age at' date must fall after the date of birth.
- Nothing is saved between sessions — only the current result can be exported as a PDF.
Frequently Asked Questions
- Can I find my age on a future date?
- Yes — set the 'age at' date to any future date and the calculator shows how old you'll be then.
- Does it account for leap years?
- Yes, the day counts include the extra day in leap years.
- Why are there several different age figures?
- The same age is shown in different units — years and months, plus total weeks, days, hours, minutes, and seconds.
- What do the two calendars show?
- They highlight the start date and the end date within their respective months.
Key Terminology
- Date of birth
- The day a person was born, used as the start of the age calculation.
- Age
- The length of time that has elapsed since the date of birth.
- Leap year
- A year with 366 days, adding February 29 to keep the calendar aligned.
- Elapsed time
- The total time between two dates, here shown in several units.
- 'Age at' date
- The date on which the age is measured, which can be today or any other day.