Steps Involved in Building a HouseSpike's Calculators

Grade Percentage to Angle in Degrees

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

Grade Percentage to Angle in Degrees

Formula = atan (percentage ÷ 100)

Example calculation

42% slope to degrees
atan (42 ÷ 100) = 
atan (0.42) = 22.9°
A 42% slope equals 22.9 degrees.

Slope Percentage to an Angle in Degrees

Slope Percentage %
Decimal Precision #


Radians rad
Degrees °


  1. slope percentage
  2. number of digits in result


  1. angle in radians
  2. angle in degrees

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