Remainder Calculator

Enter the dividend and the divisor (positive integers only)

÷\hspace{0.2em} \div \hspace{0.2em} =?\hspace{0.2em} = \hspace{0.40em}? \hspace{0.2em}

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Please provide your input and click the calculate button
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About the Remainder Calculator

The remainder calculator lets you calculate the remainder left over when a number is divided by another. It also shows you how you can get that remainder using the long division method.

Usage Guide

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i. Valid Inputs

The dividend (the first input) must be a non-negative integer. For example, 0\hspace{0.2em} 0 \hspace{0.2em}, 12\hspace{0.2em} 12 \hspace{0.2em}, and 241\hspace{0.2em} 241 \hspace{0.2em}.

The divisor (the second input) must be a positive integer. So, any counting number.

ii. Example

If you would like to see an example of the calculator's working, just click the "example" button.

iii. Solutions

As mentioned earlier, the calculator won't just tell you the answer but also the steps you can follow to do the calculation yourself. The "show/hide solution" button would be available to you after the calculator has processed your input.

iv. Share

We would love to see you share our calculators with your family, friends, or anyone else who might find it useful.

By checking the "include calculation" checkbox, you can share your calculation as well.

What Is a Remainder?

Here's an illustration of the division of a number by another.

61← Quotient
Divisor →4245← Dividend
1← Remainder

Now, there are four terms that are often used when talking about division and its results.

Dividend — The number being divided is known as the dividend. In the example above, 425\hspace{0.2em} 425 \hspace{0.2em} is the dividend.

Divisor — Divisor is the number by which we are doing the division. In the example above, 4\hspace{0.2em} 4 \hspace{0.2em} is the divisor.

Quotient — Quotient refers to the number of times the divisor goes into the dividend. In the example above, the quotient is 106\hspace{0.2em} 106 \hspace{0.2em}.

Remainder — Remainder is whatever is left over of the dividend after the division. In the example above, the remainder is 1\hspace{0.2em} 1 \hspace{0.2em}.

Calculating the remainder

One way to find the remainder, obviously, is to use a calculator that has a built-in function for that — like the one we have above. But we'll look at two other ways of finding the remainder when one number is divided by another.

Long Division

As we saw earlier, in the long division process, the remainder is the number left over in the end (when we have gone through all the digits in the dividend).

Here's another example.

3 4 8 1
1 3 4 5 2 5 9
3 9
6 2
5 2
1 0 5
1 0 4
1 9
1 3
6 ← Remainder

So, when  45259  is divided by  13, the remainder is  6.

Calculators W/o a Built-In Function for Remainders

When a calculator does not give you the remainder directly, you can use the quotient to find the remainder. Here's how.

If the quotient is a whole number, it means there is no remainder. In other words the remainder is 0\hspace{0.2em} 0 \hspace{0.2em}.

For example, if we divide 12\hspace{0.2em} 12 \hspace{0.2em} by 2\hspace{0.2em} 2 \hspace{0.2em} on a calculator, it would tell give us 6\hspace{0.2em} 6 \hspace{0.2em} as the answer. So, no remainder.

If the quotient has a decimal part, you can find the remainder using the following steps.

Step 1. Take the whole number part of the quotient and multiply it with the divisor.

Step 2. Subtract the product (from step 1) and subtract it from the dividend. This is your remainder.


When 123\hspace{0.2em} 123 \hspace{0.2em} is divided by 5\hspace{0.2em} 5 \hspace{0.2em}, the calculator gives a result of 24.6\hspace{0.2em} 24.6 \hspace{0.2em}. What would be the remainder if we divide 123\hspace{0.2em} 123 \hspace{0.2em} by 5\hspace{0.2em} 5 \hspace{0.2em}?


Let's follow the steps mentioned above.

Step 1.  The whole number part of the answer (24.6)\hspace{0.2em} (24.6) \hspace{0.2em} is 24\hspace{0.2em} 24 \hspace{0.2em}. multiplying it by 5\hspace{0.2em} 5 \hspace{0.2em}, the divisor, we get 120\hspace{0.2em} 120 \hspace{0.2em}.

Step 2.  Subtracting the 120\hspace{0.2em} 120 \hspace{0.2em} from 123\hspace{0.2em} 123 \hspace{0.2em}, the dividend, gives us 3\hspace{0.2em} 3 \hspace{0.2em}. And so the remainder is 3\hspace{0.2em} 3 \hspace{0.2em}.

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