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.

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
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.

scott 2017-04-09 17:34:39

nice calculator...could you add a multiply & divide function?

LetsTime! 2017-04-06 10:12:19

1.....to 12 plz

Angel 2017-04-03 12:16:45

Hi there , and the other day and night and then the next few days. I love you guys soo much

lib 2017-04-01 08:15:58

From Thursday 6pm until Saturday 6pm is how many hours?

aviyonna 2017-03-30 07:51:25

i love this so much

John 2017-03-29 21:12:21

Would be helpful if the calculator was able to also deal with 100s and even 1000s of a second to assist in calculating elapsed times in sports such as competitive cycling where riders start at set times and clocked over set distance and times tabulated accordingly

Djavon 2017-03-21 02:53:22

Aww man I have to catch the bus in 20 minutes thank you this app is amazing and easy

julia 2017-03-20 13:43:34

do you have a real clock on here

BADSAH 2017-03-20 02:51:41

Nice app and fabulous

Emily 2017-03-19 17:34:35

I need like, 32 minutes and 2 seconds divided by 1,25 though

Mandolf0 2017-03-18 19:46:53

00:00 means 12 midnight not noon.

Karleigh 2017-03-18 18:01:49

Great source if your lazy and is in a rush!

Isabella 2017-03-15 13:44:52

It help me do this problem: 1 hour-58min. and 2sec.

Joni 2017-03-15 02:35:13

Respected Sir or Miss,

Please solve my problem that i have washing timer is of total 15 min rotation .but this is 15 min rotation in clockwise 07 second ,stop 03 second & anticlockwise 07 second rotation .i like that total clockwise,anticlockwise & stop time used in 15 min calculate with formula.

Hoping for your cooperation.

HannahDUDE 2017-03-14 17:44:29

it was not what I was looking for but it is still a great tool that if I will ever need one I will use this one

tishyahbailey 2017-03-14 07:52:27

what time will it be in 3 hours 0 minutes

cel 2017-03-10 22:32:25

from 8:10 pm today, what would be the time tomorrow so that you will say that it's 24 hours

cakey 2017-03-09 13:38:24

is there × and ÷

Your name 2017-03-09 07:00:49

This helpded me duz mi werk.

4444 2017-03-09 02:43:46

this is great

Sophia Koury 2017-03-06 15:09:14

I love this! It definitely helped me with my homework. Thanks!

Lilian 2017-03-02 12:21:47

I timed myself and i did my homework in 5 mins and 55 seconds

melissa 2017-02-28 15:09:18

this is the best calculator every b/c it tells time inow second so thank you for creating it

Karla 2017-02-27 17:05:49

This helped me to get it

Sarah 2017-02-24 18:53:36

LOVE THIS ^_ ^

000 2017-02-24 11:59:07

It got me a little bit confused but I managed

Kedesha 2017-02-15 14:30:30

It is very useful it helped me do my homework lol is there a app for this that I can download?? I'll like to no if there is 5 stars

Antman71201 2017-02-14 15:23:23

Thank you for helping me

Dr 2017-02-14 12:41:41

Great

Mr nice 2017-02-14 09:25:05

I think it is very helpful and it helps me when I need to keep up with how many hours I read also it helps me keep up how long my little sister sleep

sam 2017-02-06 18:03:31

good stuff

Chloe 2017-02-06 01:30:22

Its very help full for home work when you cant think of eny thing to do

Ifra butt 2017-02-05 00:51:58

Plz help me to teach 4th class student about hour and minutes this method is too difficult for him

Urja 2017-02-03 02:32:53

It is nice and I like it

Sean 2017-02-02 18:39:43

I think that you should not go over 12 but other than that its pretty good (I use it for my homework lol)

Layla 2017-01-30 14:08:37

Hey does this work

2017-01-29 06:20:19

awesome

Cassie 2017-01-28 16:00:10

I am not quite sure how I can use this to keep track of my hours at work.

Sia 2017-01-27 21:27:53

There should also be for a.m. & p.m.

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