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

2 h15 min50 sec
+0 h25 min20 sec
=2 h41 min10 sec
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
= (2×60×60 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
= (4×60×60 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
+ 4:50:15

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
= (2×60×60 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
= (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
- 0:50:15
Recent Comments
name 2021-06-16 10:06:24

This is so good it actually works

EVA 2021-05-26 09:20:00

its a nice app its hard to calculate time this helped me☺️

Jason B 2021-05-07 03:32:25

this helps me alot as its difficult to time in your head

OLC GIRL 2021-05-06 13:39:36

You snould make a elapsed time calculator for this type of thing let me show you look down
ELAPSED TIME: 45 minutes

mia 2021-05-05 16:51:26

I love it so much cause my brother always asks me random questions about math

Adela 2021-05-05 10:53:27

This app is amazing! When I was stuck on 2 problems,this app really helped and now this is my favorite app for solving time backwards.

Audrianna 2021-05-05 07:28:08

It so cool. It helps me a lot.

lita lauresta 2021-05-01 08:10:43

thanks.so helpful...

GOOD AT MATH 2021-04-22 07:56:46

I use this to cheat without this i would never understand elapsed time.

Laura 2021-04-16 11:50:45

Working in a school and figuring out student minutes, This app is AMAZING!! Love it! Saves me a lot of time!

jaylan 2021-04-12 14:53:16

Awesome!!!! Soo helplful!

fortnite fan 2021-03-22 07:47:33

i love this app

Liked IT! 2021-03-20 00:19:37

Awesome!!!! So helpful!

Jason 2021-03-10 09:54:19

Thanks this helped me on ixl

Varad gamer 2021-03-08 20:09:09

this is helpful it helped me in revising the paper

Kymm 2021-03-07 21:01:54

I love this app. I use it all the time for eBay. I just set my calendar and time within 3 minutes and no more worries about missing an item you’ve been searching for and miss out because you forgot to bid at the last second!

adam 2021-03-07 12:28:29

I love time

kk go nay 2021-02-20 08:02:02

I love it when i play my prodigy game it has time on it so when i need help i come to this and I always get the question right.

suman 2021-02-17 04:54:44

this app is awesome
no confusion while calculating time

Boz 2021-02-15 13:54:34

Been using this website for a while now, extremely helpful

Dream brother:) 2021-02-12 12:45:20

I could do a speedrun on this, this can be useful to use.

Person 2021-02-12 06:37:55

Love this website, it is a great little tool to have when dealing with time! Thank you to whoever made it!

Classified 2021-02-12 01:48:49

Great, really helpful!

Creator of FORTNITE™️ 2021-02-05 13:10:44

Ha! could you pleas add sum adds for FORTNITE™️ and sum fun games so more peeps can have fun

Te'onna 2021-02-02 15:00:06

This app is so amazing I love it.

sjsgreg 2021-02-01 07:02:05

This is very useful, I like using this, yall doing some updates on it?

Rajine 2021-01-14 18:11:10

I love the app. The only one I've found if it's kind. Helps me tremendously with my time. The only problem I have is the ads covering up after the calculations. Some of them are too large & I have to go back & redo several times before I can read the answers. Google says they'll try not to show the add again but it comes up the very time after next.

adopt me lover 2021-01-13 13:40:16

i like this app bc it helps me track time

time nerd 2021-01-03 10:57:57

Thanks for this app it’s helped me a lot with keeping track of time!

Timer boi 2020-12-15 08:16:17

Maybe you could add times of the day with options of military time or regular time?

Jamiracle 2020-11-30 08:01:57

I love using this app so much it saves me a lot off time!!!!!! love it

lil Mochi 2020-11-25 07:09:22

this is amazing,I use it to know when school is over and when next period starts.I've used this for 2 years now.

Sophia 2020-11-19 06:23:33

I think this is a amazing its just omg and it's so easy to use thank you so much for creating it

JO 2020-11-18 11:51:09

it is nice but i wish it had days /weeks

roblox pro 2020-11-13 11:58:24

pls add weeks and days and years too

Jade 2020-11-13 09:56:32

I love it it help me with my text❤️ even when I have maths work with time I love it

jj. mound 2020-11-05 19:24:48

todly angry with everybody this a app was amazing... but i am voting for the multiplication and division

Free Willy 2 2020-10-30 10:56:35

thank you so much. this really really helps with annoying time question in practice maths papers they set as homework

julia buttlock 2020-10-20 21:40:11

i love this app i have a math test that have lots of time and i just finished it and got an a+

Kevin 2020-10-20 11:09:07

I use this all the time to find out when school will be OVER.

Complain MUCH? 2020-10-16 15:13:51

I think this app is REALLY helpful, and people took TIME and EFFORT to make this app. So stop complaining and be thankful this app is here to help a little. ALSO!!! Figure out the multiplication by yourselves! I am in 7th grade and I am pretty smart how to divide and multiply time and convert minutes to seconds.

Unknown 2 2020-10-11 02:22:17

I use this in class when I need to know when is the next period

Cristopher Lima 2020-09-24 11:43:35


Alani .C 2020-09-09 06:19:21

I have a schedule and with this any math is easy!

The minecraft pro 2020-09-03 19:59:38

The app is soo useful!! Rating: 10/10

The fortnite pro 2020-09-03 19:58:44

I would like more slots like multiplication and division and you should be able to add minutes+minutes+minutes+seconds for example. I would also want to have bigger time slots like days, weeks, months, years, and maybe decades, centuries, and melaniums. I hope the owner sees this and improves this website. Other than that its very useful.

Unknown 2020-08-31 09:47:53

i am surprised of how it calculates i enjoy it

Reya 2020-08-24 01:01:48

This is great!!!

Sparking light 2020-08-23 03:09:46

This site is good with dreambox, I Like it

Amulya xxx 2020-08-22 06:49:07

★★★★☆ 4 star rating:

It would be even better if you had a choice for multiplication and division and if you can find the duration of two times.
Well done and keep up the good work!

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