Legal and official documents
Passports, driving licenses, citizenship applications, and benefit forms often need exact age or proof of eligibility on a specific date. The 'as of' field lets you pin the calculation to any date.
Age Calculator
Exact age in years, months, days. Next birthday countdown.
Calculators
Years
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Months
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Days
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Total days
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Tip: double-click any visible result to copy it to your clipboard.
Age calculator
Get an exact age in years, months, and days from any date of birth.
Tooloh's age calculator breaks down the gap between a date of birth and today into precise years, months, and days, and adds a next-birthday countdown. Useful any time a rough estimate is not enough.
Highlights
- Exact years, months, days, and total day count.
- Days until next birthday included automatically.
- Use the 'as of' field to check age on any past or future date.
- Handles leap years and varying month lengths correctly.
- Runs in the browser. No data is sent anywhere.
Benefits and Medicare eligibility
Medicare eligibility starts at 65 in the US. Social Security benefits depend on exact birth year and month. Knowing your precise age makes benefits planning concrete rather than approximate.
School enrollment and child age checks
Many districts use a cutoff date to determine grade eligibility. Enter a child's date of birth and the enrollment cutoff date to see whether they qualify for the current year.
How to use it
Built for situations where a rough estimate is not good enough.
01
Enter date of birth
Type or pick any date of birth. The calculator accepts any valid calendar date.
02
Set 'as of' date if needed
Leave it blank to calculate age as of today, or pick any past or future date to check age on that specific day.
03
Read the result
See exact age in years, months, days, total days elapsed, and how many days remain until the next birthday.
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FAQ
Quick answers. No walls of text.
How does Tooloh calculate age?
We compute the elapsed time from your date of birth to the selected date and break it into years, months, and days using calendar-aware math.
Can I calculate age on a past date?
Yes. Use the “As of” field to pick any date and Tooloh will calculate age relative to that day.
Does the age calculator handle leap years?
Yes. Calculations follow real calendar dates, so leap days and varying month lengths are handled correctly.