Time Calculator
π How It Works
This Time Calculator helps you perform four types of time calculations:
- Add: Enter hours, minutes, and seconds to add to the time.
- Subtract: Enter hours, minutes, and seconds to subtract from the time.
- Multiply: Enter a multiplier value to multiply the time (hours, minutes, seconds).
- Divide: Enter a divisor value to divide the time (hours, minutes, seconds).
- Duration Between: Enter two times and find the duration between them.
Use the “Clear” button to reset all inputs and start over.
Also check
β Date Calculator
β Time Calculator
β±οΈ Add Time Calculator
β±οΈ Time From Now Calculator
β Minutes From Now Calculator
β±οΈ Minutes Ago Calculator
β±οΈ Seconds From Now Calculator
Time Calculator
The Time Calculator performs four basic mathematical operations with time: adding time, subtracting time, multiplying time, and dividing time. Though we have a calculator for each operation, this one contains them all. To use the calculator, simply change the operation and enter your inputs according to your needs.
The Time Calculator: How to Use It
Time math can be quite tedious at times, particularly when you have odd numbers to deal with. Even more so if there are multiple entries to deal with. If you were to add 3 hours: 47 minutes, 5 hours: 32 minutes, and 13 hours: 15 minutes, you would probably need a considerable amount of time to do it.
Here’s a quick guide to using the calculator. It is capable of all four (4) basic mathematical operations with time, including adding, subtracting, multiplying, and dividing time.

- Step 1:
To start, check if you need all hours, minutes, seconds, and milliseconds input fields. You can uncheck the ones you don’t need in the βοΈ Display Settings.
- Step 2:
On the first row, you will see this default empty time set. It has Hours, Minutes, Seconds, and Milliseconds. Enter your base time here, which is called addend if you are adding time. When you subtract, you add the minimum, multiply when you multiply, and divide when you divide.
- Step 3:
In the third step, you will select the type of operation you wish to perform. For instance, you can select addition (β), subtraction (β), multiplication (βοΈ) or division (β).
- Step 4:
As soon as you have selected the type of operation, you can add the second set of time inputs or numbers. If you are adding or subtracting, you can enter the second addend or subtract. They are both in time format. Multiplication and division, however, use whole numbers for multiplier and divisor. You can experiment with these.
- Step 4:
You can then add another time input or number input by clicking +Add Row button. A trash icon appears beside your added row in case you want to delete it. Click the Calculate button to display the result once all of this has been completed.
Outputs and inputs for the Time Calculator
The Time Calculator has been built in a straightforward and straightforward manner. You shouldn’t have much trouble using it. However, it might be helpful to know what the inputs, options, and results are.
Display Settings
On the calculator, you can customize your inputs by using checkboxes. They include Hours, Minutes, Seconds, and Milliseconds. The ones you don’t need can actually be unchecked and hidden from view.
Inputs
When adding and subtracting, the value should be entered according to the time format, but when multiplying and dividing, it should be entered according to the number format.
Operation Type
You can perform four mathematical operations in here – addition (β), subtraction (β), multiplication (βοΈ) and division (β). You just need to click and select the one’s you need.
Add Row Button
This is the output or the result of the calculation, which is displayed beneath the input fields. The result could be the sum, difference, product or quotient you entered.
Calculate Button
When you have completed entering your inputs, click on the Calculate button. It will read all the input entries and make the calculation.
Outputs
Adding more rows is as simple as clicking on the +Add Row button, and removing them is as simple as clicking on the trash iconοΈ.
Time Addition
With the Time Calculator, you can effortlessly add as many times as you want and get the results almost instantly. It is however possible to add time manually on your pen and paper if you are wondering how to do it.
Here are some quick rules for adding time:
- Start with seconds, minutes, then hours, and add time from the lowest to the highest.
- If necessary, convert the units using standard time unit conversions.
Let’s solve this time addition problem as an example:
9 hours and 45 minutes
+ 7 hours and 13 minutes
Adding 45 minutes + 13 minutes will be the first step, then 9 hours and 7 hours will follow.
Let’s begin by adding the 35 minutes + 15 minutes, then move forward with 5 hours and 4 hours.
5 hours 35 minutes
+ 4 hours 15 minutes
50 minutes
Starting with the minute’s unit, let’s add 5 and 5, which equals to 10 minutes. We bring down the 0 and carry over the 1 to the hours. Then, add 3 and 1, which equals 4. Now we have 50 minutes.
Now let’s do the addition on hours: 5 + 4 equals 9 hours. Add the carried over 1 from the minutes, and we have 10 hours.
Time Subtraction
Time subtraction doesn’t have to be complicated with the Time Calculator. Just choose the operation and enter your time entries. On the other hand, manual time subtraction isn’t that difficult either. You just have to keep these simple rules in mind:
- You should subtract time from the lowest time unit to the highest. In other words, you should start with seconds, then minutes, then hours.
- It may be necessary to borrow time from the largest time units before performing the operation.
- If necessary, convert the units based on standard conversions of time units.
Here’s an example of how to do a basic time subtraction:
25 hours and 37 minutes
– 11 hours and 45 minutes
Let’s start with the subtraction of minutes, then with the hours.
25 hours 37 minutes
β 11 hours 45 minutes
52 minutes
Dealing first with the least unit to the largest unit, we can now start with 7 – 5, which gives us 2 minutes. Then, 3 – 4 is not possible, so let’s borrow 1 hour and add 60 minutes to the 3 minutes, making it 63 minutes. Subtract 45 minutes from 63 minutes, and we have 52 minutes.
Then in the hour’s unit, let’s subtract 11 from 25. The result is 14 hours.
Time Division
The Time Calculator is designed to help people deal with time division. However, if you’re interested in learning how to manually calculate time division, let’s get started.
For time division to be as accurate as possible, you must follow a few rules as with other mathematical operations:
- The time can be divided by unit from lowest to highest. For example, seconds, minutes, and hours.
- Decimal times should be left intact, but the decimal values should be converted into a lesser unit than what the current time unit is.
- It may be necessary to convert values according to standard conversions of time units.
Let’s solve this problem to learn how to do time long division:
2 β13 hours and 34 minutes
The first thing we want to deal here is the minutes. Let’s divide 34 minutes by 2. Then, let’s proceed with the hours by dividing 13 hours by 2. There will be a remainder for the hours since 13 is not exactly divisible by 2.
– 2
14
-14
0
1 Γ 2 = 2. Subtract 3 – 2 = 1. Then bring down the 4 to make it 14.
14 Γ· 2 = 7. 7 Γ 2 = 14. Subtract 14 – 14 = 0.
So, 34 minutes Γ· 2 = 17 minutes.
– 12
1
So, 13 hours Γ· 2 = 6 hours and 1 hour remainder.
You can express the remainder hour as 30 minutes, so:
13 hours Γ· 2 = 6 hours and 30 minutes.
Time Multiplication
Here are the key points to the computation of time multiplication if you are just curious how it works or want to validate the result manually:
- The time can be multiplied by the unit of time starting with the smallest unit to the highest. For example, seconds, minutes, hours.
- It may be necessary to convert values according to standard conversions of time units.
Here is an example of how we can validate the results of this time calculator by solving this time multiplication problem together.
8 hours and 35 minutes x 5
Let’s start by multiplying 35 minutes by 5. Then, 8 hours by 5.
Γ 5
1 7 5
Next, we’ll multiply 3 by 5, the result will be 15, then add the 2 we carried over before. So, the answer would be 17.
So, 35 minutes Γ 5 is equal to 175 minutes.
Γ 5
4 0
Now, we need to convert the 175 minutes into hours and minutes. Since 60 minutes make 1 hour, 175 minutes Γ· 60 gives us 2 hours and 55 minutes.
So, the result is: 42 hours and 55 minutes.