August 31, 2026 · 11 min read
How to write numbers in words: the style guide rules
When to spell a number out and when to use figures, why Chicago and AP disagree about it, and the hyphen, plural and "and" rules that trip people up.
Blog · Guides
When to spell a number out, how the style guides disagree, and what the conventions on a contract or an invoice are actually for.
August 31, 2026 · 11 min read
When to spell a number out and when to use figures, why Chicago and AP disagree about it, and the hyphen, plural and "and" rules that trip people up.
August 31, 2026 · 10 min read
Why the amount appears twice on a contract, which version prevails when the two disagree, and the conventions that make the written one hold up.