How is the age calculated?

Age is calculated from the entered date of birth to today's date using your local timezone. Years, months, and remaining days are computed separately for accuracy.

Does this tool account for leap years?

Yes. The day count is based on the actual difference in calendar days, so leap years are automatically accounted for.

Can I calculate the age of someone born today?

Yes — entering today's date will return zero for all fields, confirming the tool handles same-day entries correctly.

Can I calculate a date difference other than age?

Yes. Change the target date from today to any past or future date to calculate the exact difference between two dates in years, months, and days — useful for contract durations, project timelines, or anniversary countdowns.

How do I find out what day of the week I was born?

Enter your birth date and the tool displays the day of the week that date fell on alongside your exact age in years, months, and days.

Private by defaultRuns in your browser

Age calculator

Enter a date of birth to see the exact age broken down into years, months, weeks, days, hours, and minutes.

Date of birth

Quick samplesUseful for testing

Age Calculator

About this tool

Enter a date of birth to see exact age in years, months, weeks, days, hours, and minutes. Instant, browser-based, no signup or install.

Enter a date of birth to see the exact age broken down into years, months, weeks, days, hours, and minutes.

No signup requiredRuns in your browserInstant results

How to use

1
Enter your date of birth using the date picker.
2
The exact age in years, months, and days is calculated instantly based on today's date.
3
Optionally set a custom target date to calculate age at a specific point in time.

Why use this tool?

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Quickly calculate someone's exact age for forms, documents, or eligibility checks.
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Find out how many days old you are for a fun milestone or birthday post.
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Calculate age in months or weeks for infant development tracking.

ExamplesInput → output

Age from birthdate

InputDate of birth: 1990-06-15

Output35 years, 9 months, 23 days

Age at a specific date

InputBorn: 2000-01-01 | Target: 2024-01-01

OutputExactly 24 years old

Frequently asked questionsCommon questions answered

These answers explain common age calculator tasks, expected input formats, and edge cases so both visitors and search engines can understand what this tool does.

How is the age calculated?: Age is calculated from the entered date of birth to today's date using your local timezone. Years, months, and remaining days are computed separately for accuracy.
Does this tool account for leap years?: Yes. The day count is based on the actual difference in calendar days, so leap years are automatically accounted for.
Can I calculate the age of someone born today?: Yes — entering today's date will return zero for all fields, confirming the tool handles same-day entries correctly.
Can I calculate a date difference other than age?: Yes. Change the target date from today to any past or future date to calculate the exact difference between two dates in years, months, and days — useful for contract durations, project timelines, or anniversary countdowns.
How do I find out what day of the week I was born?: Enter your birth date and the tool displays the day of the week that date fell on alongside your exact age in years, months, and days.