15.00° Slope = 26.79% Grade
Results
Elevation Grade
26.79%
Elevation Grade for 15.00 degrees:
- Degrees: 15.00°
- Percent Slope: 26.79%
- Rise/Run Ratio: 0.2679
- 1 in X Ratio: 1 in 3.73
- Inches per Foot: 3.22"
- mm per Meter: 268 mm
Frequently Asked Questions
What is 15.00 degrees in other formats?
15.00 degrees equals 26.79% slope, or a 1 in 3.73 ratio (rise/run).
How steep is a 26.79% slope?
A 26.79% slope corresponds to a 15.00 degree angle and means for every 100 units of horizontal distance, there is 26.79 units of vertical rise.
What is the rise per foot for a 15.00 degree slope?
A 15.00 degree slope has a rise of 3.22 inches per foot of horizontal distance.
Nearby Slope Values
| Degrees | Percent Slope | 1 in X Ratio |
|---|---|---|
| 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 |
| 15.00° | 26.79% | 1 in 3.73 |
| 15.50° | 27.73% | 1 in 3.61 |
| 16.00° | 28.67% | 1 in 3.49 |
| 16.50° | 29.62% | 1 in 3.38 |
| 17.00° | 30.57% | 1 in 3.27 |
| 17.50° | 31.53% | 1 in 3.17 |
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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