Convert Percent to Ratio (slopes)

Convert slopes from Percent to Ratio automatically. Read about percent (%) and ratio, and understand the conversion between percent and ratio.

About percent. The percent slope is related to the vertical rise and horizontal run of the slope. As the angle approaches 90 degrees, the slope percentage approaches infinity. Do not confuse this percent measure with the percent we use to measure angles.

About ratio. Ratio is the relation between vertical rise and horizontal run of the slope.

Conversion. Understanding the conversion between percent and ratio. The formula to convert the percent slope to slope ratio is x/100.

  1. x/100 (convert the percent slope to the fraction of 100)
  2. Divide both values by the first value (vertical rise)

Examples:
8% = 8/100 = 2:25 = 1:12.5
25% = 25/100 = 1:4
45% = 45/100 = 9:20 = 1:2.22

To convert vice versa, from ratio to percent, use this converter. To convert other angle units use these converters.