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Slope / Incline Calculator
Convert slope between percent, degrees and ratio.
Percent = rise / run × 100. Degrees = arctan(rise / run). A 2 m rise over 10 m run is a 20% slope or about 11.3°.
How it works
Percent = rise / run × 100. Degrees = arctan(rise / run). A 2 m rise over 10 m run is a 20% slope or about 11.3°.
Worked example
2 m rise, 10 m run → 20% slope, 11.31°. Perfect for a gentle access ramp.
Recommendations
- Keep wheelchair ramps under 8% (about 5°)
- Drainage pipes work from 1% (1:100) upward
- Driveways feel steep above 15%
Tips & advice
- Use a string line and level for outdoor measurements
- Always measure perpendicular to the slope
- Check local building codes for ramp limits
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Slope / Incline Calculator
Convert slope between percent, degrees and ratio.
Use the calculatorInvoice Generator FAQs
Yes, all 20 home calculators are 100% free, private and run entirely in your browser. No account needed.
They use standard industry formulas. Always round up for materials and confirm with a professional for structural work.
The calculators use metric units (meters, liters, m³). Convert imperial measurements beforehand if needed.
No. Calculations happen instantly in your browser and nothing is sent to any server.
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