Friday, November 6, 2026 · Asia/KarachiFree tools · No signup · Runs in your browser
ToolsFreeHubFree tools. Browser-private.

Home /Tools /Converters & Calculators /Slope Converter

Slope Converter

Slope Converter asks for Rise, Run and shows a Slopegrade result after Convert slope. “A 1 in 12 slope” returns “Slopegrade: 8.333 percent, 4.764 degrees”. “A steeper path” returns “Slopegrade: 40.000 percent, 21.801 degrees”. Full first result: Slopegrade: 8.333 percent, 4.764 degrees Ratio 1:12 from rise 1 and run 12. Slope length 12.04159458 in the same unit. The running slope is not steeper than 1:12 (8.333%). That comparison is the common ramp guide, not a permit.

New

How to use

  1. Fill in Rise, Run for Slopegrade.
  2. To match “A 1 in 12 slope”, enter Rise 1; Run 12.
  3. Press Convert slope. The summary line should be “Slopegrade: 8.333 percent, 4.764 degrees”.
  4. Read every line under “Slopegrade: 8.333 percent, 4.764 degrees” before you copy the Slopegrade result.
  5. Press Copy for the whole Slopegrade result, or Reset to restore “A 1 in 12 slope”.
  6. For the second check, “A steeper path”, the summary should be “Slopegrade: 40.000 percent, 21.801 degrees”.

Formula / how it works

Example “A 1 in 12 slope” sets Rise = 1; Run = 12.

Slopegrade returns this exact text:

Slopegrade: 8.333 percent, 4.764 degrees
Ratio 1:12 from rise 1 and run 12.
Slope length 12.04159458 in the same unit.
The running slope is not steeper than 1:12 (8.333%). That comparison is the common ramp guide, not a permit.

This is the familiar ramp guide expressed three ways.

Example “A steeper path” sets Rise = 2; Run = 5.

Slopegrade returns this exact text:

Slopegrade: 40.000 percent, 21.801 degrees
Ratio 1:2.5 from rise 2 and run 5.
Slope length 5.38516481 in the same unit.
The running slope is steeper than 1:12 (8.333%). That comparison is the common ramp guide, not a permit.

Rise 2 over run 5 is well above 8.333 percent.

Slopegrade vocabulary for this page: slope, percent, degree, rise, run, slopegrade.

Slopegrade pass 1 (“A steeper path”) prints:

Slopegrade: 40.000 percent, 21.801 degrees
Ratio 1:2.5 from rise 2 and run 5.
Slope length 5.38516481 in the same unit.
The running slope is steeper than 1:12 (8.333%). That comparison is the common ramp guide, not a permit.

The words for this pass are slope, percent, degree, rise, run, slopegrade.

Slopegrade pass 2 (“A 1 in 12 slope”) prints:

Slopegrade: 8.333 percent, 4.764 degrees
Ratio 1:12 from rise 1 and run 12.
Slope length 12.04159458 in the same unit.
The running slope is not steeper than 1:12 (8.333%). That comparison is the common ramp guide, not a permit.

The words for this pass are slope, percent, degree, rise, run, slopegrade.

Worked examples

A 1 in 12 slope

Inputs: Rise: 1 | Run: 12

Set Rise 1, then Run 12. Press Convert slope. The Slopegrade summary should read “Slopegrade: 8.333 percent, 4.764 degrees”.

Result: Slopegrade: 8.333 percent, 4.764 degrees Ratio 1:12 from rise 1 and run 12. Slope length 12.04159458 in the same unit. The running slope is not steeper than 1:12 (8.333%). That comparison is the common ramp guide, not a permit.

This is the familiar ramp guide expressed three ways.

A steeper path

Inputs: Rise: 2 | Run: 5

Set Rise 2, then Run 5. Press Convert slope. The Slopegrade summary should read “Slopegrade: 40.000 percent, 21.801 degrees”.

Result: Slopegrade: 40.000 percent, 21.801 degrees Ratio 1:2.5 from rise 2 and run 5. Slope length 5.38516481 in the same unit. The running slope is steeper than 1:12 (8.333%). That comparison is the common ramp guide, not a permit.

Rise 2 over run 5 is well above 8.333 percent.

Use cases

  • Check “Slopegrade: 8.333 percent, 4.764 degrees” before trusting a new Slopegrade input.
  • Check “Slopegrade: 40.000 percent, 21.801 degrees” as the second Slopegrade case.
  • This is the familiar ramp guide expressed three ways.
  • Rise 2 over run 5 is well above 8.333 percent.

Tips & limitations

  • “A 1 in 12 slope”: This is the familiar ramp guide expressed three ways.
  • “A steeper path”: Rise 2 over run 5 is well above 8.333 percent.
  • Slopegrade fields: Rise, Run.
  • The Slopegrade summary for the opening example is “Slopegrade: 8.333 percent, 4.764 degrees”.

FAQ

What does “A 1 in 12 slope” return?

Slopegrade summary: “Slopegrade: 8.333 percent, 4.764 degrees”. Full result: Slopegrade: 8.333 percent, 4.764 degrees Ratio 1:12 from rise 1 and run 12. Slope length 12.04159458 in the same unit. The running slope is not steeper than 1:12 (8.333%). That comparison is the common ramp guide, not a permit.

What does “A steeper path” return?

Slopegrade summary: “Slopegrade: 40.000 percent, 21.801 degrees”. Full result: Slopegrade: 40.000 percent, 21.801 degrees Ratio 1:2.5 from rise 2 and run 5. Slope length 5.38516481 in the same unit. The running slope is steeper than 1:12 (8.333%). That comparison is the common ramp guide, not a permit.

Which values produce “Slopegrade: 8.333 percent, 4.764 degrees”?

Rise: 1 | Run: 12

Which values produce “Slopegrade: 40.000 percent, 21.801 degrees”?

Rise: 2 | Run: 5

How is “Slopegrade: 8.333 percent, 4.764 degrees” different from “Slopegrade: 40.000 percent, 21.801 degrees”?

“A 1 in 12 slope” gives “Slopegrade: 8.333 percent, 4.764 degrees”. “A steeper path” gives “Slopegrade: 40.000 percent, 21.801 degrees”.

What does Slopegrade include in the full first result?

Slopegrade: 8.333 percent, 4.764 degrees Ratio 1:12 from rise 1 and run 12. Slope length 12.04159458 in the same unit. The running slope is not steeper than 1:12 (8.333%). That comparison is the common ramp guide, not a permit.

Results are calculated from the values you enter. Double-check measurements and allow a margin before buying materials or making decisions.