Age Calculator

About this tool

This free online Age Calculator helps you calculate your exact age using your date of birth. Simply enter your birth date to find out your age in years, months and days. Unlike a basic age calculator that only shows your age in years, ToolsVexa provides a detailed breakdown of your age, including total months, weeks, days and hours.

Whether you want to know your current age, check how many days you have lived or calculate your age on a specific date, this online age calculator makes it quick and easy.

Calculate Your Exact Age by Date of Birth

Finding your exact age is simple. Select your date of birth and the calculator will automatically calculate the difference between your birth date and the selected calculation date. Your result includes years, months and days, giving you a more detailed picture of your age.

You can also see your total age in:

1. Total months lived
2. Total weeks lived
3. Total days lived
4. Total hours lived

Calculate Your Age on Any Date

One useful feature of this age calculator is the ability to calculate your age on a date other than today. The Age at the date of option allows you to select a past or future date and find out exactly how old you were or will be on that date.

This feature can be helpful when completing:

1. School and college admission forms
2. Job applications and age eligibility requirements
3. Passport and identity documentation
4. Certificates and official records
5. Other forms requiring age on a specific date

Find Your Birth Day of the Week

Ever wondered whether you were born on a Monday, Tuesday or another day of the week? This calculator also tells you the exact weekday of your birth based on your date of birth.

Check Your Next Birthday

The calculator also identifies the date of your next birthday and shows how many days are left until it arrives. You can easily keep track of your upcoming birthday without calculating the remaining days manually.

Simple and Easy to Use

You do not need to create an account or install any software. Just enter your date of birth, select the date for which you want to calculate your age and view your results. The calculation updates automatically whenever you change either date.

Free Online Age Calculator with Privacy in Mind

ToolsVexa's Age Calculator is completely free to use. The calculation runs directly in your browser, and the dates you enter are not sent to our servers or saved. You can calculate your age conveniently from a desktop, laptop, tablet or mobile phone.

Use this free age calculator by date of birth whenever you need a quick and accurate age calculation.

How Is Age Calculated?

Age can be calculated differently depending on the age-counting system used. Most commonly, age is calculated using the birthday-based system. In this system, a person's age increases by one year on their birthday.

For example, a person who has lived for 3 years and 11 months is considered 3 years old. They become 4 years old on their next birthday, one month later. This is the commonly used age system in many Western countries.

Different Age-Counting Systems Around the World

Some cultures use traditional age-counting systems that differ from the birthday-based method. In certain systems, a person may be considered one year old at birth, and their age may increase at the beginning of a new calendar year rather than on their birthday.

For example, in a traditional Chinese age-counting system, a baby is considered one year old at birth and gains another year at the Traditional Chinese New Year. This means a baby born shortly before the New Year may be considered two years old only a few days after birth.

ToolsVexa's Age Calculator uses the common birthday-based age system rather than traditional cultural age-counting methods.

Why Can Age Calculations Differ at the End of a Month?

Calculating age in complete months and remaining days can sometimes be confusing because different months have different numbers of days.

For example, calculating age from February 28, 2022, to March 31, 2022, can produce different results depending on the calculation method.

One method counts February 28 to March 28 as one complete month, followed by 3 remaining days. Another method treats both dates as the last day of their respective months and counts the period as one complete month.

Both approaches are used in different date-calculation contexts. The result depends on the calculation rules implemented by the calculator.

For this reason, always consider the calculation method when comparing age results from different online age calculators.

How to use

1. Select your date of birth using the date picker.
2. Keep Age at the date of set to today's date to calculate your current age. To calculate your age on another date, select a past or future date, such as an admission or job application cut-off date.
3. Click Use today whenever you want to reset the calculation date to today's date.
4. View your exact age in years, months and days, along with your total months, weeks, days and hours.
5. Check your birth weekday, next birthday date and the number of days remaining until your next birthday.
6. Your age results update automatically whenever you change a date. If a date is missing or the dates are entered in the wrong order, the Calculate age button displays an appropriate message.