The AP Stylebook is a popular style guide in the business and journalism worlds. But how should you write numbers in AP style? In this post, we explain everything you need to know, including:
For information on all the above, check out our guide below.
Produced by the Associated Press, the AP Stylebook has a few basic recommendations for how to write numbers. In general, you should:
These rules apply to both cardinal and ordinal numbers. However, the AP Stylebook also has guidance on when to use numerals and words for numbers in particular situations. And in these cases, you should stick to the specific advice regardless of how big or small the number is.
Key cases in which AP style suggests using numerals include:
The AP also suggests using numerals in tabular material, statistics, and sequences, even for numbers below ten.
There are also a few times when you should always spell out a number:
Except in the noted exception of years, these override the general rules for numeral use, so make sure to use words even for numbers over nine.
For large round numbers, AP style suggests a mix of numerals and words:
Up to 5 million people may be affected.
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It landed the company with a $2 billion lawsuit.
This provides a balance between simplicity and clarity.
As a guideline, AP style only suggest using Roman numerals for:
Otherwise, the AP Stylebook suggests using Roman numerals sparingly.
AP style recommends using numerals for numbers in headlines. This applies even for numbers under ten and when a number appears at the start of a headline.
The only exceptions to this rule are the following:
Keep an eye out for these exceptions if you’re using numbers in a title or headline.
Need a little help making sure your document follows AP style conventions? If so, we have proofreaders who can help. All you need to do is upload a 500-word sample document for free today to find out more.
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