How to convert decimals to percentages

Part of MathsFractions

Key points

  • Calculations often give a decimal answer.
  • It can be useful to convert a decimal to a as a percentage is often easier to understand.
  • To do these conversions, you need to be able to multiply by 100
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How to convert a decimal to a percentage

  1. Multiply the decimal by 100 to get the percentage value.
  2. Write the percentage value and add the percentage symbol %

When the decimal has a value greater than one whole, the percentage will be greater than 100%. Eg the decimal 1∙2 converts to 120%

Examples

Image gallerySkip image gallerySlide 1 of 6, Example 1: Zero point four five., Convert 0∙45 to a percentage.

Questions

What is 0∙8 as a percentage?

What is 1∙6 as a percentage?

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Practise converting decimals to percentages

Try this quiz to practise converting decimals to percentages.

Quiz

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Real-world maths

Converting decimals to percentages can be a valuable skill for anyone who publishes or presents data. This could include scientists, journalists, retailers and engineers.

Someone holding a smartphone with a news article on the screen.
Image caption,
A journalist may use percentages instead of decimals in an article.

A journalist may investigate employment statistics and find that a company has given a pay rise to 0∙8 of its staff. The figure is expressed as a decimal (0∙8) and so the journalist needs to converts this to a percentage (80%) to make the information easier for their readers to understand. The published article states that: “80% of staff received a pay rise.

Someone holding a smartphone with a news article on the screen.
Image caption,
A journalist may use percentages instead of decimals in an article.
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Game - Divided Islands

Play the Divided Islands game! game

Using your maths skills, help to build bridges and bring light back to the islands in this free game from BBC Bitesize.

Play the Divided Islands game!
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