Garage Ramp Slope Calculator
Determine the incline of a garage or driveway ramp using the vertical rise and horizontal run so vehicles can clear transitions safely.
Verify ramp compliance with local regulations.
Examples
- 6 in rise over 72 in run ⇒ 8.33% slope
- 0.25 m rise over 3.5 m run ⇒ 7.14% slope
- 10 in rise over 120 in run ⇒ 8.33% slope
FAQ
What is ramp slope?
It is the steepness of the ramp expressed as a percentage of rise compared to run.
Can I enter metric measurements?
Yes. Enter rise and run in centimeters or meters as long as both use the same unit.
How does slope relate to degrees?
Divide the percentage by 100 to get the ratio, then use arctangent if you need the angle in degrees.
Does this tool check code compliance?
No. Always consult local regulations or an engineer for structural approval.
Additional Information
- Slope percentage equals rise ÷ run × 100. Multiply by 1.2 to approximate degrees of incline.
- Use the same units for rise and run—either inches, feet, or meters—to avoid skewed results.
- Most passenger cars handle slopes under 12%, but long wheelbases or low-clearance vehicles may need gentler ramps.
- Confirm compliance with local building codes or accessibility guidelines before construction.