Do not abbreviate:
- The words “day,” “week,” “month,” “year,” even when they are next to a numerical value.
Abbreviate:
- The words “hour,” “minute,” “second,” and other measurements of seconds when they are accompanied by a numerical value.
| Term | Abbreviation | Example |
| Hour | hr | 6 hrs |
| Minute | min | 30 min |
| Second | s | 5 s |
| Millisecond | ms | 2.64 ms |
| Nanosecond | ns | 90 ns |
(Adapted from APA, 2020, pp.176)
The American Psychological Association. (2020). Publication Manual of the American Psychological Association 7th edition
