AP Style Decimal Units

Use a period and numerals to indicate decimal amounts. Decimalization should not exceed two places in textual material unless there are special circumstances.

For amounts less than 1, use the numeral zero before the decimal points. For example,

  • 0.05

When the decimal is 1 or less, the type of measurement should be singular. For example,

  • 0.35 meter
  • 0.55 square feet
  • 0.75 mile

See also AP Style Fractions and AP Style Numbers.

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