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Dividing Fractions Calculator

Created by Hanna Pamuła, PhD
Reviewed by Dominik Czernia, PhD and Jack Bowater
Last updated: May 08, 2024

On the hunt for a tool that can divide any combination of fractions, mixed numbers, and whole numbers? If so, look no further - this dividing fractions calculator is the one for you! This calculator can help you with many different questions:

✔️ How to divide fractions with whole numbers?
✔️ How do you divide a whole number by a fraction?
✔️ How to divide mixed fractions?
❌ How to sum two fractions? And how to convert fractions to decimals and decimals to fractions?

Well, the last point isn't the purpose of this tool. Better check out our adding fractions calculator for tips and tricks on fraction addition, as well as two excellent converters, the fractions to decimals converter and the decimals to fractions calculator, designed to remove any doubts about fractions conversion. And for those searching for an all-in-one solution, we have something special – a comprehensive fraction calculator. Give it a go!

How to divide fractions?

Dividing fractions is really similar to multiplying fractions. You just need to follow these steps to divide two fractions (for example, 45\frac 4 5 by 23\frac 23):

  1. Calculate the reciprocal of your second fraction - the divisor (the fraction you want to divide by). To find the reciprocal, simply flip the number upside down so that the top number is now at the bottom and the bottom number is now above the line:
2332\qquad \frac{2}{3}\rightarrow\frac{3}{2}

Remember that there's one number which doesn't have a reciprocal - 00. So our second fraction can't have its top number equal to 00 - and we hope that we don't need to remind you that you can't divide by zero, so the bottom number of a fraction can also never be zero.

  1. Multiply your fractions. As a reminder, to multiply two fractions, you need to multiply the numerator by the other numerator and the denominator by the other denominator:
45×32=4×35×2=1210\qquad \frac{4}{5}\times\frac{3}{2} = \frac{4\times 3}{5\times2}=\frac{12}{10}
  1. Finally, simplify the result, if needed:
1210=65\qquad \frac{12}{10}=\frac{6}{5}

And that's it!

That wasn't so difficult, was it? 😉 Our dividing fractions calculator shows you the step-by-step solution to your chosen example if you still have problems understanding how to divide fractions.

To summarize, you've just learned the general rules for dividing fractions. If you're searching for more specific instructions, like dividing mixed fractions or dividing fractions by whole numbers, keep reading!

How to divide fractions with whole numbers?

When it comes to dividing fractions by whole numbers, it's pretty much the same as above: you need to multiply your fraction by a reciprocal – but this time, it's a reciprocal of the whole number. Let's look at an example, dividing 12\frac 1 2 by 33:

  1. Find the reciprocal of your whole number. As you may write every whole number as that number over 11, then 33 is 31\frac 3 1. Its reciprocal is then 13\frac1 3:
3113\qquad \frac{\textcolor{#ff8000}3}{\textcolor{#5c85d6}1} \nearrow\kern{-1em} \searrow \frac{\textcolor{#5c85d6}1}{\textcolor{#ff8000}3}
  1. Multiply the fractions:
12×13=1×12×3=16\qquad \frac{1}{2}\times\frac{1}{3}=\frac{1\times1}{2\times3}=\frac{1}{6}
  1. This time you don't need any fraction reduction, as the result will always be in its simplest form.

To sum up, the whole operation of dividing fractions by whole numbers looks as follows:

123=1231=12×13=1×12×3=16\begin{align*} \frac{\frac{1}{2}}{3} &= \frac{\frac{1}{2}}{ \frac{3}{1}} =\frac{1}{2}\times\frac{1}{3}\\[1.5em] &=\frac{1\times1}{2\times3}=\frac{1}{6} \end{align*}

So, in other words, you can say that the denominator of your fraction is multiplied by the whole number.

Let's think about a word problem for the above example to help you intuitively understand dividing fractions by whole numbers.

The day after Halloween 🎃, two of your friends came for a visit. You'd like to offer them some food, but you only have half of a pumpkin pie in the house 😱. What proportion of the entire pie should each slice, if you want to divide it equally? Don't forget about yourself; you'd like to eat that yummy pie, too 🥧.

illustration for the example on how to divide fraction with whole numbers: half of a pie, divided by 3 children - each will get one-sixth of a pie

That's right! Every person will get one-sixth of a pie.

How do you divide a whole number by a fraction?

Dividing a whole number by a fraction should be a piece of cake for you (or a slice of pumpkin pie?🤔). The protocol is really similar, let's check how to divide 22 by 16\frac 1 6:

  1. Find the reciprocal of the divisor – the second fraction.
1661\qquad \frac{\textcolor{#ff8000}1}{\textcolor{#5c85d6}6} \nearrow\kern{-1em} \searrow \frac{\textcolor{#5c85d6}6}{\textcolor{#ff8000}1}
  1. Do the fraction multiplication. As you can write 22 as 21\frac 2 1:
21×61=2611=121=12\qquad \begin{align*} &\frac{2}{1} \times\frac{6}{1}=\frac{\frac 2 6}{\frac 1 1} \\[1.5em] &=\frac {12}{1} = 12 \end{align*}

And that's everything! In this case, you don't need to do any simplification.

Coming back to the pumpkin pie, you can imagine this problem as the question "How many slices that are one-sixth of a pie fit into two pies🥧🥧?"

illustration for the example on how to divide a whole number by a fraction: two pies, divided by 1/6 slices - in total, there are 12 slices

Yes, exactly! If you divide two pies into 16\frac 1 6 slice, you will get 1212 such slices in total.

How to divide mixed fractions?

We're pretty sure you've already guessed how to divide mixed fractions. You need only one additional step – to change the mixed fraction to an improper fraction:

Let's assume you want to divide 3123\frac{1}{2} by 1451\frac{4}{5}:

  1. Change any mixed numbers to improper fractions. Here is a quick reminder on how to do it: multiply the denominator by the whole number and add the numerator to get a new numerator. The denominator stays the same:
312=3×2+12=72\qquad 3\frac{1}{2} = \frac{3\times 2+1}{2}=\frac{7}{2}


145=1×5+45=95\qquad 1\frac{4}{5}=\frac{1\times5+4}{5}=\frac{9}{5}

Then, follow the standard procedure:

  1. Find the reciprocal of the second fraction:
9559\qquad \frac{9}{5}\rightarrow\frac{5}{9}
  1. Multiply the fractions:
72×59=7×52×9=3518=11718\qquad \begin{split} \frac{7}{2}\times\frac{5}{9}&=\frac{7\times5}{2\times9} \\[1.5em] &=\frac{35}{18} = 1 \frac{17}{18} \end{split}

Of course, our dividing fractions calculator can deal with dividing mixed fractions 💪

Example 1: 3/4 divided by 2 in fraction form

As you've read the paragraph on how to divide fractions with whole numbers, we're sure this will be a walk in the park for you. Let's check how to calculate 34\frac{3}{4} divided by 22 as fractions, using this dividing fractions calculator:

  1. Choose the fraction form. Let's pick the mixed number option, as you'd like to enter a whole number (however, simple fraction form is also fine, then you should write the whole number as the number over 1).

  2. Input the first fraction. For the chosen example, put 33 as a numerator (top number), and 44 in the denominator box (it's the bottom number). You can ignore the whole number field or input 00.

  3. Enter the second value. Input 22 to the whole number box and leave the other fields empty.

  4. And that's it - the dividing fractions calculator worked out the answer! Now you know that 34\frac{3}{4} divided by 22 in fraction form is 38\frac{3}{8}.

If you need some details on what the calculations are for your example, check the step-by-step solution.

Example 2: Dividing 3 fractions

Finally, let's discuss a slightly more unusual case – dividing three fractions. To make it even more complicated, let's choose fractions in different forms: two fractions in their simple form (one negative) and one fraction that is a mixed number:

  1. Select the proper form of the fraction. You need the mixed number option, as you have one mixed fraction.

  2. Input the fractions:

    • 1st fraction: 77 as the whole number, 11 as the numerator, 44 as the denominator;

    • 2nd fraction: empty or 00 as the whole number, 55 as the numerator, 66 as the denominator; and

    • 3rd fraction: empty or 00 as the whole number, 2-2 as the numerator, 33 as the denominator.

  3. Check how to divide 3 fractions with a step-by-step solution. The result of the operation is 26120=13120-\frac{261}{20} = -13\frac{1}{20}.

Hanna Pamuła, PhD
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