LEO LEO: Literacy Education Online

Using Numbers in Writing


When you refer to a number in writing, you have to decide whether to use a figure or to spell it out as a word. In scientific and technical writing, figures predominate; in magazines and books of general interest, words predominate although figures are also used. This page offers guidelines for non-technical writing.

When do I spell out a number in my writing?

When do I use a numeral in my writing?

How do I use numbers in


Spell out a number when


Use a number for