Website Writing Guide

Punctuation

Numbers

There are many styles for presenting numbers on the Web:

  • spell out numbers up to nine
  • write all numbers 10 and above as numerals
  • use commas as appropriate for numbers greater than 999: 1,200,450 and 1,282
  • numbers that begin a sentence should be spelt out:
    Forty-four years ago my parents arrived in Australia.
  • use numerals when the number modifies a unit of measure, time, proportion: 2 inches, 5-minute delay, 60 kph, 23 years old, page 23, 2%
  • use numerals for decimals and fractions: 0.75, 3.45, 1/2
  • approximate figures may be written out as words: a third of the time, four times as often
  • place a hyphen after a unit of measure when the unit modifies a noun: 2-metre shark,
    6-centimentre rule, 3-year-old horse
  • use 40% rather than 40 per cent
  • page numbers: p 34
  • telephone numbers - present local numbers as 8123 4567 and international numbers as
    +61 8 8123 4567.

 

Other topics in this section

Home Guide | Basic punctuation rules | Lists - bullets, numbers, hyperlinks | Capitals |
Hyphens
| Abbreviations | Web page addresses | Italics | Quotations | Numbers |
Dates and times
| Citing references |

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