Ordinal style
Ordinal style is the rule for how you write ordinal numbers (first, second, third versus 1st, 2nd, 3rd) in your content. Consistent ordinal style is a small but visible piece of brand polish.
Also known as:
Ordinal format, Ordinal numbers
What is ordinal style?
Ordinal style is your brand's rule for how to write ordinal numbers, whether they appear spelled out, as numerals or in a mix based on the value. The rule affects headings, body copy, dates, anniversaries, rankings and any other place where ordered position shows up. Most style guides settle on a simple threshold, such as spelling out ordinals under 10 and using numerals for 10 and up.
Spelled out: You reached the first milestone on the fifteenth.
Numeric: You reached the 1st milestone on the 15th.
Mixed: You reached the first milestone on the 15th.
Why does ordinal style matter?
Ordinal style is one of those small, invisible rules that makes a brand read coherent across channels. Mixing "1st" in a product release note with "first" in the next blog post signals that different teams are writing at different times. Consistent ordinals matter most in structured content such as lists, release notes and timelines, where readers scan for ordered information and lose trust if the format shifts. Setting the rule once means every writer and AI tool follows the same convention.
How do you use ordinal style?
Pick one default style and a clear threshold, such as spelling out ordinals under 10 and using numerals from 10 upward.
Apply the rule identically across content surfaces such as marketing copy, product UI, documentation and support.
Add the rule to your Brivvy brand voice so every generated draft follows the convention automatically.
