Quickly calculate someone's exact age for forms, documents, or eligibility checks.
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
Free online age calculator — enter a date of birth to instantly get exact age in years, months, weeks, days, hours, and minutes.
No signup requiredRuns in your browserInstant results
Find out how many days old you are for a fun milestone or birthday post.
Calculate age in months or weeks for infant development tracking.
Why use this tool?Key benefits
Works instantly
Paste your input and get the result immediately — no page reload, no waiting, no configuration needed to get started.
Your data stays private
All Age Calculator processing runs locally in your browser. Nothing you paste is sent to a server or stored anywhere.
Focused workspace
A dedicated page for Age Calculator means a clean, distraction-free workspace you can bookmark and come back to anytime.
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.