INTERACTIVE TOOL
Slope calculator
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How to use this tool
- Measure rise and horizontal run in the same unit.
- Enter both values with the intended sign.
- Distinguish percentage slope from angle in degrees.
Automatic answerThe result updates while you change the fields.
Worked example
A rise of one over a horizontal run of ten is ten percent, not ten degrees.
Assumptions and limits
This does not verify accessibility or structural compliance; a zero horizontal run has no usual quotient.
Frequently asked questions
Is run horizontal?+
Yes. Use horizontal distance, not the sloped length.
What happens to my inputs?+
Calculation inputs are processed locally in your browser. Favorites and preferences may be saved on this device. The site may perform separate network requests for live panels; these do not include the values entered into this local calculator. Do not paste secrets into public tools.
How should I check the result?+
This does not verify accessibility or structural compliance; a zero horizontal run has no usual quotient.