Spike's Calculators
Excavation
Grade Percentage to Angle in Degrees
Convert a slope percentage to an angle in degrees using the arctangent function.
Formula = atan (percentage ÷ 100)
Example calculation
42% slope to degreesatan (42 ÷ 100) = atan (0.42) = 22.9°A 42% slope equals 22.9 degrees.
Slope Percentage to an Angle in Degrees
Calculation
- slope percentage
- number of digits in result
Result
- angle in radians
- angle in degrees
Excavation Calculators
Excavated Materials and Trucking
- Excavation Material Removal Calculator Swell and Shrinkage
- Material from a Rectangular Shaped Excavation
- Number of Truckloads - Imperial
- Number of Truckloads - Metric
- Rectangle Pyramid Pile
- Rectangle Pyramid Pile - Metric
- Volume of a Cone Shaped Pile Calculator
- Volume of a Cone Shaped Pile Calculator - Metric
- Volume of a Pile Calculator
- Volume of a Pile Calculator - Metric
Equipment
Factors, Grades, Percentages
- Elevation Grade Slope in a Percentage, Millimetres
- Elevation Grade from Inches per Foot
- Elevation Grade from a Percentage
- Grade Percentage to Angle in Degrees
- Horizontal Length from Angle and Slope Length
- Spike's Compaction Factor Calculator
- Shrink and Load Factor Calculator
- Swell and Load Factor Calculator
- Vertical Depth from a Slope Percentage and Horizontal Length