A grade is a unit of measurement of an angle. It is equivalent to 1/400 of a turn, 9/10 of a degree or π /200 of a radian. The unit grades are used in the road measurement. A 100 percent grade would be equivalent to a 45-degree angle. The elevation grade calculator can be used to determine the vertical percentage grade change on highways located in mountain terrains or an inclined plane. Enter the inputs in the incline change calculator to calculate grade percentage of inclined planes.

## Calculate Grade Percentage of Inclined Planes

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A grade is a unit of measurement of an angle. It is equivalent to 1/400 of a turn, 9/10 of a degree or π /200 of a radian. The unit grades are used in the road measurement. A 100 percent grade would be equivalent to a 45-degree angle. The elevation grade calculator can be used to determine the vertical percentage grade change on highways located in mountain terrains or an inclined plane. Enter the inputs in the incline change calculator to calculate grade percentage of inclined planes.

Elevation grade calculator is useful for the civil engineers in calculating the vertical grade percent of inclined planes or terrains during highways construction. For example, a road's flat surface can be referred to as a 0 percent grade or an 180-degree angle.