Age Calculator — Exact Years, Months & Days
Calculate exact age in years, months and days
How to Use Age Calculator
Calculate exact age in years, months and days No signup, and nothing gets uploaded for most use.
- 1
Enter your date of birth using the date picker.
- 2
Optionally set a target date — otherwise today is used.
- 3
Read your exact age in years, months and days instantly.
- 4
See how many days, weeks and hours old you are, plus your next birthday date.
Why you might like it
- Nothing to upload — the work happens on your device.
- Free with no signup, no watermarks, and no daily limits.
- Works in any modern browser on any device — nothing to install.
- Usually done in a few seconds, so it doesn't get in your way.
Frequently Asked Questions
How is a February 29 birthday handled?▾
A leap-day birthday is treated as February 28 in non-leap years, so the age stays accurate on any reference date.
How do you count total months?▾
Total months is the number of whole years times twelve plus the remaining months. For example 3 years and 2 months equals 38 months.
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Learn more
Age: The Complete Guide for 2026
Learn how the Age Calculator works, how exact age in years, months and days is computed, and how to read your result.
How to Use Age: A Step-by-Step Guide
Step-by-step guide to using the Age Calculator — enter your birth date, set a reference date, and get your exact age instantly.
Age: Formats, File Types, and Size Limits
An overview of the Age Calculator's inputs and options — date formats, reference dates, and the units you can view.