When do you use a slash mark?
This page reflects guidance from the sixth edition of the Publication Manual.
Use a slash
to clarify a relationship in which a hyphenated compound is used.
- the classification/similarity-judgment condition
to separate numerator from denominator
to indicate per to separate units of measurement accompanied by a numerical value
- 0.5 deg/s
to set off English phonemes.
to cite an unpublished work.
- Freud (1923/1961)
Do not use a slash
when a phrase would be clearer
Each child handed the ball to her mother or guardian.
Each child handed the ball to her mother/guardian.
for simple comparisons. Use a hyphen or short dash (en dash) instead.
more than once to express compound units. Use centered dots and parentheses as needed to prevent ambiguity.
nmol • hr-1 • mg -1
(adapted from the sixth edition of the APA Publication Manual, © 2010)
7th Edition Publication Manual
Available in multiple formats