Grade vs. Gradient
When describing how steep a slope is, “gradient” and US “grade” can refer to the same concept. Do not treat the words as interchangeable in every context: “grade” also means level, mark, or class, while “gradient” has technical rate-of-change senses.
When describing how steep a slope is, “gradient” and US “grade” can refer to the same concept.
Key details
Further guidance
Core difference
When describing how steep a slope is, “gradient” and US “grade” can refer to the same concept.
Fast Test
Use the term expected by the field and audience, especially in transport, engineering, or trail descriptions.
Usage Boundary
Do not treat the words as interchangeable in every context: “grade” also means level, mark, or class, while “gradient” has technical rate-of-change senses.
Sources and evidence
Sources are shown with the role they play in this guide. Historical or style-sensitive claims are kept within the evidence boundary described above.
- Gradient — Cambridge Dictionary (opens in a new tab)Cambridge University Press · Learner-dictionary evidence that gradient means slope steepness and that US English also uses grade in this sense.