Mathematics-Monster.com
(#mm)

menu

Converting Fractions to Percentages
(KS3, Year 7)

homesitemapconverting fractionsconverting a fraction to a percentage
A fraction can be converted to a percentage.

convert fraction to percentage

How to Convert a Fraction to a Percentage

Converting a fraction to a percentage is easy. Divide the top number of the fraction by the bottom number of the fraction and then multiply by 100%.

Question

What is 15 as a percentage?

Step-by-Step:

1

Divide the top number (called the numerator) of the fraction (1) by the bottom number (called the denominator) of the fraction (5).

convert fraction to percentage example step 1
1 ÷ 5 = 0.2

2

Multiply the answer (0.2) by 100%.
0.2 × 100% = 20%
Don't forget: a percentage has a % ("percent") sign after it.

Answer:

15 converted to a percentage is 20%.

How to Convert a Fraction to a Percentage Using a Formula

To convert a fraction to a percentage you have to multiply the fraction by 100%.

convert fraction to percentage formula The method for calculating this formula is exactly the same as in the example above.

Lesson Slides

The slider below gives another example of converting a fraction to a percentage.

What Is a Fraction?

Fractions consist of a numerator and a denominator.

fractions explained The denominator tells you how many equal parts the whole is divided into, and the numerator tells you how many of these parts there are.

What Is a Percentage?

A percentage expresses a part of a whole number as parts out of 100. "Per cent" means "per 100" or "out of 100". A percentage is shown by the symbol %.

Why Does the Formula Work?

To convert a fraction to a percentage, the formula tells us to multiply the fraction with 100%.
Percentage = Fraction × 100%
It is a special case of finding the fraction of a number, where the number is 100%. Learn more about finding the fraction of a number
author logo

This page was written by Stephen Clarke.

You might also like...

Help Us Improve Mathematics Monster

  • Do you disagree with something on this page?
  • Did you spot a typo?
Please tell us using this form.

Find Us Quicker!

  • When using a search engine (e.g., Google, Bing), you will find Mathematics Monster quicker if you add #mm to your search term.

Share This Page

share icon

If you like Mathematics Monster (or this page in particular), please link to it or share it with others.

If you do, please tell us. It helps us a lot!

Create a QR Code

create QR code

Use our handy widget to create a QR code for this page...or any page.