Age Calculator By Date Of Birth

How to use Age Calculator

1. Enter your date of birth in DD/MM/YYYY format (Don't using "/" or "-").
2. Click On Calculate Age button.
3. Your age will be displayed instantly in years, months, and days.

We hope you have a helpful and convenient experience using our Age Calculator.

How calculate your age

1. subtract your birth date from current date.
2. subtract your birth month from current month.
3. subtract your birth year from current year.

age calculator formula :

Age = Today's Date - Date of Birth

if your birthday has already passed

Your Date of Birth (DOB): 05/06/2020

Today's Date: 14/08/2026

Write the Dates in YYYY-MM-DD Order and use formula

2026 - 08 - 14 (todays date)
- 2020 - 06 - 05 (DOB)

14 - 05 = 9 day

08 - 06 = 2 month

2026 - 2020 = 6 year

If You Have Not Passed Your Birthday

Date of Birth (DOB): 16/08/2020

Today's Date: 14/08/2026

Since the birthday has not yet been reached in 2026, we calculate the exact age using years, months, and days.

1. Write Dates in YYYY-MM-DD Order and use formula

DOB: 2020-08-16

Today's Date: 2026-08-14

Step A: Subtract Days

Days: 14 - 16 is negative, so we need to borrow 1 month.

month before August 2026 is July 2026, This Month has 31 days.

Borrow 1 month and add 31 days to the day part:

14 + 31 = 45 days

Reduce month by 1: 08 - 01 = 07

Now subtract the days:

45 - 16 = 29 days

So we now have 29 days, and the month has been adjusted from August to July (07).

Step B: Subtract Months

2026-07
- 2020-08

Months: 07 - 08 is negative, so we borrow 1 year.

Borrow 1 year, 1 year = 12 month then add 12 months:

07 + 12 = 19 months

Reduce the year by 1: 2026 → 2025

Now subtract the months:

19 - 08 = 11 months

So we now have 11 months and 29 days.

Step C: Subtract Years

Now subtract the adjusted years:

2025 - 2020 = 5 years

3. Final Age

Frequently Asked Questions

How do I calculate my age?

If your birthday has already passed in the current year then subtract your birth year from current year. and If your birthday has not passed, then current year - birth year (-1 ).

How do I calculate my age in dd/mm/yyyy?

if todays date are same as or greater than your birth date with month it means your birthday has already passed. then

1. subtract your birth date from current date. 2. subtract your birth month from current month. 3. subtract your birth year from current year.

otherwise use given above method 2.

Is this Age Calculator free?

Yes. Our Age Calculator is completely free to use and available online anytime.

Do I need to register to use the calculator?

No. You do not need to create an account or register to calculate your age.

Is the age calculation accurate?

Yes. The calculator uses your date of birth and the current date to calculate your age in years, months, and days. The result is based on the information you enter.

After calculating your age, if you need then you can use also our Percentage Calculator for quick and exact percentage calculations.