Calculate exact age from date of birth: years, months, days, total weeks, and a next-birthday countdown. Free and instant — nothing leaves your browser.
Age Calculator is part of ToolsPilot — a free online toolkit for PDFs, images, audio and video. No signup, no watermark and no software to install. Your file is processed entirely in your browser, so it never leaves your device.
How to use Age Calculator
Enter the date of birth.
Optionally change the “age at” date (it defaults to today).
Read the exact age in years, months and days — plus the day you were born, next-birthday countdown, and totals in months, weeks and days.
Frequently asked questions
Is Age Calculator free to use?
Yes. Age Calculator on ToolsPilot is 100% free with no account, no watermark and no daily limits for everyday use.
Are my files private and secure?
Age Calculator runs entirely in your browser, so your file never leaves your device — nothing is uploaded to any server.
Do I need to install any software?
No. Age Calculator works online in any modern browser on Windows, macOS, Linux, Android and iOS — there is nothing to download or install.
How is the age calculated?
Calendar-accurately: months borrow real month lengths and leap years are handled, so the years/months/days figure matches how ages are legally counted.
Is my date of birth stored?
No — the calculation happens in your browser and nothing you enter is sent or saved anywhere.