Convert a slope percentage to an angle in degrees using the arctangent function.

Formula = atan (percentage ÷ 100)

Example calculation

atan (42 ÷ 100) = 
atan (0.42) = 22.9°

Calculation

1. slope percentage
2. number of digits in result

Result

1. angle in radians
2. angle in degrees

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

• Excavator/Tractor Fuel Consumption per Hour

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
• Slope Percent and Angle of the Slope - Metric
• Swell and Load Factor Calculator
• Vertical Depth from a Slope Percentage and Horizontal Length

Information

• List - Bulking/Swell of Excavated or Mined Materials
• List - Swell and Shrinkage of Excavated Materials List