Age Calculator
Calculate your exact age in years, months, and days. Find out how many days you have lived and how many days until your next birthday.
Enter dates
Set your date of birth and the date to calculate age to.
Defaults to today. Change to any date.
Your age
Exact breakdown from birth to the selected date.
Exact age
Total days lived
13,142
Days until next birthday
7
36th birthday
You are 35 years, 11 months, and 24 days old — that is 13,142 days lived. Your next birthday is in 7 days.
How it works
Your exact age is calculated by subtracting your date of birth from the selected date, accounting for varying month lengths and leap years. The total days lived is the absolute difference in calendar days between the two dates. The birthday countdown finds the next occurrence of your birth month and day from the selected date.
Explore More Calculators
Time Calculator
Add or subtract hours, minutes, and seconds instantly. Get results in h:m:s, total minutes, and total seconds. Includes a time sense game with leaderboard.
Calculate now →Calorie Calculator
Calculate your daily calorie needs based on age, weight, height, and activity level using the Mifflin-St Jeor formula. Includes macro split by goal.
Calculate now →BMI Calculator
Calculate your Body Mass Index using imperial or metric measurements. Instantly see your BMI category — underweight, normal, overweight, or obese.
Calculate now →Statistics Calculator
Calculate mean, median, mode, range, standard deviation, and variance from a list of numbers. Supports both population and sample standard deviation.
Calculate now →