12.00° Slope = 21.26% Grade
Results
Elevation Grade
21.26%
Elevation Grade for 12.00 degrees:
- Degrees: 12.00°
- Percent Slope: 21.26%
- Rise/Run Ratio: 0.2126
- 1 in X Ratio: 1 in 4.70
- Inches per Foot: 2.55"
- mm per Meter: 213 mm
Frequently Asked Questions
What is 12.00 degrees in other formats?
12.00 degrees equals 21.26% slope, or a 1 in 4.70 ratio (rise/run).
How steep is a 21.26% slope?
A 21.26% slope corresponds to a 12.00 degree angle and means for every 100 units of horizontal distance, there is 21.26 units of vertical rise.
What is the rise per foot for a 12.00 degree slope?
A 12.00 degree slope has a rise of 2.55 inches per foot of horizontal distance.
Nearby Slope Values
| Degrees | Percent Slope | 1 in X Ratio |
|---|---|---|
| 9.50° | 16.73% | 1 in 5.98 |
| 10.00° | 17.63% | 1 in 5.67 |
| 10.50° | 18.53% | 1 in 5.40 |
| 11.00° | 19.44% | 1 in 5.14 |
| 11.50° | 20.35% | 1 in 4.92 |
| 12.00° | 21.26% | 1 in 4.70 |
| 12.50° | 22.17% | 1 in 4.51 |
| 13.00° | 23.09% | 1 in 4.33 |
| 13.50° | 24.01% | 1 in 4.17 |
| 14.00° | 24.93% | 1 in 4.01 |
| 14.50° | 25.86% | 1 in 3.87 |
How to Calculate Elevation Grade
- Enter any slope measurement: degrees, percent grade, ratio, inches per foot, or mm per meter
- The calculator instantly converts to all other slope formats
- Results show: degrees, percentage, rise/run ratio, inverse ratio, and construction measurements
Formula Reference
- Percent Grade: Grade % = tan(angle in degrees) × 100
- Rise/Run Ratio: Ratio = tan(angle in degrees)
- Angle from Percent: Degrees = arctan(percent / 100) × (180/π)
- Inches per Foot: Rise per foot = tan(degrees) × 12
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