Date & Time Tools
Age Calculator
Calculate your exact age in years, months, and days.
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What is Age?
The age calculator works out exactly how many years, months, and days have passed since a birth date, including the calendar-aware month boundaries.
How it works
It compares the birth date to the 'as of' date by walking year, month, then day, borrowing from earlier units the way calendar math requires.
- Enter your input. Type or paste your input into the field above — the tool responds instantly.
- Review the result. Output updates live as you type. Everything runs entirely in your browser.
- Copy or download. Use the Copy button to grab the result, or Download to save it as a file.
Examples
Realistic sample
Paste or type any realistic input — the tool computes the result locally and instantly.
Common mistakes
Expecting a server round-trip
Nothing is uploaded — every tool in this category runs entirely in your browser.