How to use Age Calculator
Calculate completed years, months and days between two dates. Calendar years, months and days use component borrowing. A February 29 birthday advances on March 1 in a non-leap year. Total elapsed days are also shown.
- Set Start / calendar date.
- Set End date (excluded for day counts).
- Run the tool, review the result and its stated limitations, then copy or download if needed.
Example & practical use
Calculate completed years, months and days between two dates. The example below demonstrates Start / calendar date; End date (excluded for day counts).
Example input:
{
"date": "2000-05-10",
"end": "2024-06-12"
}
Expected result (relevant fields):
{
"years": 24,
"months": 1,
"days": 2
}Features & result limitations
Calendar years, months and days use component borrowing. A February 29 birthday advances on March 1 in a non-leap year. Total elapsed days are also shown.
Frequently asked questions
What inputs does Age Calculator accept?
Start / calendar date; End date (excluded for day counts)
How should I interpret the Age Calculator result?
Calendar years, months and days use component borrowing. A February 29 birthday advances on March 1 in a non-leap year. Total elapsed days are also shown.
Where does Age Calculator process my data?
Inputs are processed locally in your browser. Submitted text is not sent to external services. A successful-run event increments an aggregate tool counter without your input.