Time Calculator

What is Time Calculator?

This free online time calculator is made to check the difference or addition of the two given time stances. You can check the results for days, hours, minutes, and seconds.

Time Calculator

Why use online time calculator?

Time calculator is used to check the addition or subtraction of two different time intervals. This can be used to see the age difference in terms of days, hours, minutes, and seconds. Or can be used to see the time difference of two persons to finish the same work in two different time frames. This time calculator can be very useful for many things and can be used for fun activities for kids to learn.

How to use time calculator?

This is very easy to use and simple, no need of any technical knowledge, one just need the exact values of the 2 different time intervals. Follow these steps and you will see the results.

Step 1. Enter the time interval values in the 1st input field. (Days, hours, minutes, seconds)

Step 2. Then choose the difference or additions

Step 3. Enter the 2nd time interval values in 2nd in put field. (Days, hours, minutes, seconds)

Step 4. Press calculate button to the results below.

How does this calculator work?

This calculator takes the values from input fields and see the command if the command is subtraction, it subtracts the values or if it is additions, then sum up the values and show them separately.

Below is table of time intervals and their definitions.

Very useful information




1,000 years


100 years


10 years

year (average)

365.242 days or 12 months

common year

365 days or 12 months

leap year

366 days or 12 months


3 months


28-31 days


Jan, Mar, May, Jul, Aug, Oct, Dec  - 31 days


Apr, Jun, Sep, Nov - 30 days


Feb - 28 days for a common year and 29 days for a leap year


7 days


24 hours or 1,440 minutes or 86,400 seconds


60 minutes or 3,600 seconds


60 seconds


base unit


10-3 second


10-6 second


10-9 second


10-12 second