Calculate exact age in years, months, and days from any date of birth. Free online age calculator with upcoming birthday countdown. No signup required.
First time here? Enter your date of birth Your input is processed locally and disappears when you close the tab.
Figuring out your precise age by hand means juggling leap years, uneven month lengths, and awkward calendar math. Our free Age Calculator online does it instantly: enter your date of birth and get your exact age in years, months, and days, measured up to any target date you choose.
Whether you need to calculate my age for a form, confirm eligibility for a visa or pension, or simply satisfy your curiosity, this exact age calculator gives you far more than a single number. Alongside your age from date of birth, it breaks the total span down into days, weeks, months, hours, and minutes, tells you which weekday you were born on, and runs a live birthday calculator that counts down to your next birthday. Pick any two dates — past or future — to measure the interval between them with full leap-year accuracy.
Every calculation runs entirely in your browser using its built-in date engine, so your birth date is never uploaded, stored, or shared — nothing leaves your device. Once you're done, explore our other utilities: generate figures with the Random Number Generator, switch between measurement systems with the Unit Converter, or estimate content length with the Reading Time Calculator.
Enter your date of birth
Optionally change the reference date
See your exact age instantly
View next birthday countdown