Measure ramp grade from rise and run. Review percent slope, angle, ratio, and length outputs. Use structured results for better accessible entrance planning today.
| Case | Rise | Run | Ratio | Slope % | Angle |
|---|---|---|---|---|---|
| Entry Ramp A | 30 in | 360 in | 1:12.00 | 8.33% | 4.76° |
| Entry Ramp B | 24 in | 288 in | 1:12.00 | 8.33% | 4.76° |
| Garden Ramp | 0.45 m | 6.30 m | 1:14.00 | 7.14% | 4.09° |
| Short Ramp | 15 cm | 180 cm | 1:12.00 | 8.33% | 4.76° |
Slope percentage = (Rise ÷ Run) × 100
Slope angle = arctan(Rise ÷ Run)
Slope ratio = 1 : (Run ÷ Rise)
Ramp length = √(Rise² + Run²)
Required run for a target ratio = Rise × Target Ratio Denominator
Total travel length = Ramp Length + (Landing Count × Landing Length)
Surface area = Total Travel Length × Ramp Width
A handicap ramp slope calculator helps you measure ramp steepness before construction starts. This matters because a ramp that is too steep can be difficult to use. It can also reduce safety. Good planning saves time, space, and material. This tool helps by converting basic dimensions into clear design values.
The calculator uses rise and run as the main inputs. Rise is the vertical height change. Run is the horizontal distance. From those numbers, it finds slope percent, angle, ratio, and true ramp length. It also estimates required run for a chosen target ratio. That makes it useful during early layout and review.
Different teams read slope in different ways. Some people prefer percent grade. Others use an angle or a ratio like 1:12. Builders may also need the actual sloped length for material planning. This calculator shows all of those values together. That reduces guesswork and improves communication across planning, design, and installation.
A ramp is not only a line from bottom to top. Many layouts include landings. Those extra flat sections affect walking distance and surface area. Width also changes area and material coverage. This tool includes both values. That gives you a better picture of total space and usable ramp surface.
You can use this calculator for quick comparisons. Try one rise with different run values. Try one run with different target ratios. You can see how much extra length is needed when a ramp is too steep. That is helpful when a site has limited space or a fixed entrance height.
This calculator is a practical planning tool. It does not replace local codes, project drawings, or official review. Rules can vary by location and building type. Use the results to support design decisions, then confirm your final ramp layout with the correct local requirements before construction.
Ramp slope describes how steep the ramp is. It compares vertical rise with horizontal run. You can express it as a percent, an angle, or a ratio.
A 1:12 ratio means one unit of rise for every twelve units of run. It is a common reference point for accessible ramp planning, but local rules may differ.
Run is the flat horizontal distance. Ramp length is the sloped surface distance. Ramp length is always a little longer because it follows the incline.
Some plans, teams, and suppliers use percent grade. Others prefer slope angle. Showing both makes the result easier to understand and compare across different workflows.
The calculator shows that the ramp is steeper than the chosen target ratio. It also estimates how much additional horizontal run is needed.
No. Landings do not change the slope of the inclined section. They do change total travel length and total surface area, which still matter in planning.
Yes. The calculator supports millimeters, centimeters, meters, inches, and feet. Just enter all values in the same selected unit for correct results.
No. It is a planning and estimation tool. Always compare the output with the current local code, project needs, and official accessibility requirements.
Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.