40.00° Slope = 83.91% Grade
Results
Elevation Grade
83.91%
Elevation Grade for 40.00 degrees:
- Degrees: 40.00°
- Percent Slope: 83.91%
- Rise/Run Ratio: 0.8391
- 1 in X Ratio: 1 in 1.19
- Inches per Foot: 10.07"
- mm per Meter: 839 mm
Frequently Asked Questions
What is 40.00 degrees in other formats?
40.00 degrees equals 83.91% slope, or a 1 in 1.19 ratio (rise/run).
How steep is a 83.91% slope?
A 83.91% slope corresponds to a 40.00 degree angle and means for every 100 units of horizontal distance, there is 83.91 units of vertical rise.
What is the rise per foot for a 40.00 degree slope?
A 40.00 degree slope has a rise of 10.07 inches per foot of horizontal distance.
Nearby Slope Values
| Degrees | Percent Slope | 1 in X Ratio |
|---|---|---|
| 37.50° | 76.73% | 1 in 1.30 |
| 38.00° | 78.13% | 1 in 1.28 |
| 38.50° | 79.54% | 1 in 1.26 |
| 39.00° | 80.98% | 1 in 1.23 |
| 39.50° | 82.43% | 1 in 1.21 |
| 40.00° | 83.91% | 1 in 1.19 |
| 40.50° | 85.41% | 1 in 1.17 |
| 41.00° | 86.93% | 1 in 1.15 |
| 41.50° | 88.47% | 1 in 1.13 |
| 42.00° | 90.04% | 1 in 1.11 |
| 42.50° | 91.63% | 1 in 1.09 |
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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