Age Calculator
Calculate your exact age and the age difference between two birth dates
How to calculate your exact age?
Exact age is calculated by subtracting the birth date from the current date. For precise years, months and days, you must account for months of different lengths and leap years (every 4 years, except century years not divisible by 400).
Leap years
A year is a leap year if divisible by 4, except if divisible by 100, unless also divisible by 400. So 2000 and 2024 are leap years, but 1900 was not. People born on February 29 celebrate their birthday on February 28 in non-leap years.
Age difference between two dates
Our tool also calculates the difference between any two dates — useful for calculating work seniority, contract duration, a pet's age or the time between historical events.
Why choose OmniTools?
OmniTools brings together 20+ carefully crafted online tools built by our team. Every tool is designed to be fast, accurate and usable without sign-up. We believe essential everyday utilities — calculators, converters, generators — should be freely available with a clean interface and no intrusive ads. Our commitment: your data never leaves your browser.
Our tools are used daily by students, real-estate professionals, developers, designers, travelers and curious minds. Each tool comes with detailed documentation, formulas, reference values and practical tips to help you get the most out of it. We regularly ship new tools and improvements based on community feedback.
Frequently asked questions
Is this tool really free?
Yes, OmniTools is completely free, with no sign-up and no usage limit. No credit card required.
Is my data sent to a server?
No. All calculations and conversions run in your browser. Your data stays private on your device.
Does it work on mobile?
Yes, the interface is fully responsive and optimized for smartphones, tablets and desktops.
How often is the tool updated?
We continuously improve our tools based on user feedback to guarantee accuracy and reliability.