Age Calculator
Find out exactly how old you are — down to the hour. Enter your date of birth and get your precise age in years, months, days, plus next birthday countdown and zodiac signs.
How to Calculate Your Age Online
ToolsPix Age Calculator computes your exact age from a date of birth entirely in your browser using JavaScript's built-in date engine. There is no software to install, no account to create, and no data is sent to any server.
Why use ToolsPix Age Calculator?
- Completely free with no limits on how many times you can use it.
- All calculations happen locally — your date of birth never leaves your device.
- Works on Windows, Mac, Linux, iPhone, and Android — anywhere with a modern browser.
- Shows age in multiple units: years, months, weeks, days, and hours.
- Includes next birthday countdown and Western and Chinese zodiac signs.
Steps to calculate your age
Enter your date of birth in the first field. The calculator instantly shows your exact age. You can also change the Calculate age as of field to any past or future date to find out how old you were — or will be — on that day.
FAQ
How accurate is the age calculator?
The calculator uses your local time zone to avoid off-by-one errors caused by UTC conversion. It accounts for leap years and varying month lengths, giving you an exact breakdown of years, months, and days.
Can I calculate age between two specific dates?
Yes. The Calculate age as of field defaults to today but you can change it to any past or future date. This lets you find out how old someone was on a specific occasion, or how old they will be in the future.
Is my date of birth stored or uploaded anywhere?
No. All calculations happen entirely in your browser. No data is sent to any server, no cookies are set, and nothing is logged. Your date of birth never leaves your device.
What is the "Calculate age as of" field for?
It sets the reference date for the calculation. By default it is today, but you can change it to answer questions like "How old was my grandfather when I was born?" or "How old will I be when I retire?"
How are the zodiac signs determined?
The Western zodiac sign is based on your birth month and day using standard astronomical date ranges. The Chinese zodiac is based on your birth year using the traditional 12-year animal cycle.