Time Calculator

Please enter the time values; hours, minutes and seconds to add or subtract time.

Please select starting time and
add/subtract hours, minutes, seconds to calculate time.

About Time Calculator

Time calculator can add or subtract hours, minutes, seconds to the starting time you've entered. Calculated time result will be shown on the right box as total days, hours, minutes and seconds. Also the clock time will be calculated and listed below the time result. You can choose the time calculation operation to add or subtract on the form above. Calculation will be performed just after the operation selected. You can increase or descrease the hours, minutes and seconds value of time by your keyboard up and down keys. Now button will set the starting time to the current time. And the clear button resets the time inputs.

This is the webpage where our online Time Calculator is presented. It is a great and effective online tool to calculate how much time left till a certain moment of time, or calculate the exact duration between two specified points in time. This online Time Calculator is very easy to use and can be of a great help to anyone who needs to make this type of calculation related to scientific work, studies, some daily activities, and so on. There is also some very useful information about time measurement units and the specifics of their conversions between each other.

Time Calculator

Examples for Time Calculator

DaysHoursMinutesSeconds
2 h15 min50 sec
+0 h25 min20 sec
=2 h41 min10 sec
DaysHoursMinutesSeconds
5 h45 min10 sec
+21 h34 min55 sec
=1 day3 h20 min5 sec

Add Hours Minutes Seconds to Time Calculation

On the following time calculation steps, we show how to add time in seconds.

Let's say starting time is 2:15:30
Add 4:50:15

1 hour = 60 × 60 seconds
1 minute = 60 seconds

Calculating starting time in seconds
2:15:30
= (2×60×60 sec) + (15×60 sec) + 30 sec
= (7200 sec) + (900 sec) + 30 sec
= 8130 seconds

To add 4:50:15 to starting time
We calculate seconds too
4:50:15
= (4×60×60 sec) + (50×60 sec) + 15 sec
= (14400 sec) + (3000 sec) + 15 sec
= 17415 seconds

Now let's add starting seconds
= 8130 seconds + 17415 seconds
= 25545 seconds

Calculating days
1 day = 24 hours
1 day = 24×60×60 seconds
1 day = 86400 seconds

We got 25545 seconds
total days = 25545 ÷ 86400
total days = 0

Calculating hours
We got 25545 seconds
total hours = 25545 sec ÷ (60×60 sec)
total hours = 7 hours

We have left
25545 seconds - (7×60×60) sec
= 25545 - 25200 sec
= 345 seconds

Calculating minutes
total minutes = 345 ÷ 60
total minutes = 5 minutes

We have left
= 345 - (5 × 60) seconds
= 45 seconds

So the result is
  2:15:30
+ 4:50:15
-------------
  7:05:45

Subtract Hours Minutes Seconds from Time

On the following time calculation steps, we show how to subtract time in seconds.

Let's say starting time is 2:15:30
Subtract 0:50:15

1 hour = 60 × 60 seconds
1 minute = 60 seconds

Calculating starting time in seconds
2:15:30
= (2×60×60 sec) + (15×60 sec) + 30 sec
= (7200 sec) + (900 sec) + 30 sec
= 8130 seconds

To subtract 0:50:15 from starting time
We calculate seconds too
0:50:15
= (50×60 sec) + 15 sec
= (3000 sec) + 15 sec
= 3015 seconds

Now let's subtract from starting seconds
= 8130 seconds - 3015 seconds
= 5115 seconds

Calculating days
1 day = 24 hours
1 day = 24×60×60 seconds
1 day = 86400 seconds

We got 5115 seconds
total days = 5115 ÷ 86400
total days = 0

Calculating hours
We got 5115 seconds
total hours = 5115 sec ÷ (60×60 sec)
total hours = 1 hour

We have left
5115 seconds - (1×60×60) sec
= 5115 - 3600 sec
= 1515 seconds

Calculating minutes
total minutes = 1515 ÷ 60
total minutes = 25 minutes

We have left
= 1515 - (25 × 60) seconds
= 15 seconds

So the result is
  2:15:30
- 0:50:15
-------------
  1:25:15

We also recommend Metric units converter for all other metric units conversions.

Recent Comments
geoff 2017-08-07 22:42:31

what is half of 43 minutes and 52 seconds?

Arn 2017-08-06 02:56:10

Very useful web-based tool. I use it whenever I'm at work. Thanks for this.

Lizz Dregne 2017-08-01 08:26:14

Does it compensate for Daylight Savings Time?

Christer 2017-08-01 06:40:53

I use this every time if only I have problem with my maths.

Lily 2017-07-31 18:53:50

What time is it when the world will end?

Blake 2017-07-27 21:53:52

This is amazing really helps when studying!

alkhyber 2017-07-20 09:21:58

good and powerfull

Angie 2017-07-09 05:41:54

it would be awesome if you could add the {am & pm} to the time but overall this website is

SUPERCALLAFRAGALISTICEXPEALADOCIOUS!!!!! - don't know if that's the right spelling?

pat 2017-07-05 21:23:14

I Luv how many hours are there in 366 days

Katie 2017-06-30 07:59:57

Neill but when I use this for homework and I goes to the next day I have to work out the time

jaylin 2017-06-29 12:04:39

i love it better than what ever

4Chan 2017-06-26 11:45:06

Great for telling your friends how long you got left to stroke your dog.

Romana 2017-06-20 15:12:28

Love it.
Do you have an app I can download?

Timeaddicting21 2017-06-17 17:10:35

What's the time between 10:30 pm and 12:00 am?

Henry 2017-06-13 08:39:08

This was really helpful thankyou

raul 2017-06-06 17:09:36

What time is it if you know you will be my friend

UrBoi 2017-06-05 23:09:25

It should also have a calculator where its time which is divided or multiplied by a plain number

Sahara 2017-05-31 06:31:43

What time will it be in 5 hours?

paul 2017-05-27 09:56:26

it helping me so quick lol!!!!!!!!!!!!!!!!!!!!!!!!

Max 2017-05-26 06:41:30

you need to make it so that i can add time really fast like a calculator.
id like to enter seconds, hit enter, enter more seconds, hit enter and just continue adding times

rachelle 2017-05-26 05:51:13

iam happy to use this

anonymous 2017-05-24 15:01:35

it didn't wrk bc i needed 2 do 12:45+45min but it couldnt help me

melanie 2017-05-24 09:13:00

love this it helped me pass 5th grade so thankful ^-^

melanie 2017-05-24 09:11:11

this is the best it helped be complete 5th grade so thankful.(^^)

Laila 2017-05-23 11:32:00

Lolllllllllll they should have a voice activater i dont got time to writting all that shit

Wishing Well 2017-05-18 15:03:35

This really helped me out today. :) Iz da best :)

i wish... 2017-05-15 16:12:16

I wish this could turn hours and minutes into seconds

Damien 2017-05-12 07:33:07

Can you add multiplication and division?

STARSEED 2017-05-11 13:58:23

I USE THIS EVERYDAY AT WORK(:

Ansjsjs 2017-05-11 09:51:19

How to you calculate time in between 4:15-6:00 thanks I need help

Mariah 2017-05-10 18:26:29

I also use it for my homework lol..But yea it the truth it rely works.

Mariah 2017-05-10 18:25:39

Love it,I think it works rlly well and great too..It can help me as a student/kid,and others too.So yea it amazing.

David Warr 2017-05-09 14:09:13

I am 2287526400 seconds old, work that out.

Miracle 2017-05-08 15:53:05

I like this calculator a lot because when I'm in trouble with how to calculate hours this calculator help me a lot

ama 2017-05-07 10:08:49

i need this for middle school math tests.

Tania 2017-05-04 19:45:15

This is awesome I feel like I can do anything

Bob Williams 2017-05-04 09:00:38

Hello, this calculator help alot

................................Isabella? 2017-05-01 13:24:59

this was hard at first but now its really easy to tell what time it would be in 20min i pick 20... but if you pick 20min and say it was 4:00 and in 20min it would be 4:20

Unknown 2017-04-28 15:55:28

Hey there,
I thought that you should add multiplication, division, and a AM and PM.

Thanks a lot!

.

kathy 2017-04-27 18:06:35

NEED to be able to do division and subtraction with time calculation

Kubilay 2017-04-26 03:24:42

Thanks really helpful to check and see if my answers are write

Melissa 2017-04-25 15:34:08

This is the most useful calculator in the world because everyone wants to tell time so thanks

kayla l cook 2017-04-24 09:25:12

thank you i really like this. it helps. NOT lol jk

Mia 2017-04-23 19:39:34

You teach me a lot

Markrissia 2017-04-18 17:29:42

I like this method.

paul 2017-04-12 04:34:14

WOW! I like this and I been there first time so its amazing!

paul 2017-04-12 04:30:42

eeeem..... why is there 2 hours, 2 minutes and 2 seconds in each group?

Cherishma 2017-04-11 17:59:12

It helps me a lot with time

unknown 2017-04-11 12:48:30

i love this app. and fyi for all those people out there that need a clock app/ tab go to clock tab .com

Angel 2017-04-10 21:06:30

Can you update the site where you can more than 2 numbers so I wont take so much time adding the sum of the numbers whith other times.

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