# Elevation Grade from a Percentage

This calculator will calculate the drop in inches, the difference in elevation, from a slope expressed as a percentage.

**Formula used : elevation change = ( percentage ÷ 100) * length**

##### Example calculation

a trench 20 feet long requires a 2% slopeconvert 20 feet to inches

20 * 12 = 240" 240 * (2 ÷ 100) = 240 * 0.02 = 4.8 = 4^{13}/_{16}"

### Slope Percentage Drop

#### Calculation

- length in feet & inches
- required slope in a percentage
- fraction precision preset @16

#### Result

- required drop in inches

### Excavation Calculators

##### Imperial

Number of TruckloadsFuel Consumption for Operating a Machine

Shrink and Load Factor

Spike's Compaction Factor

Swell and Load Factor

Swell and Shrinkage of Excavated Materials

Calculate the Volume of a Pile in Cubic Yards

Calculate the Volume of a Pile in Cubic Yards - Cone Shaped

##### Metric

Number of Truckloads (Metric Measurements)Calculate the Volume of a Pile in Cubic Metres

Calculate the Volume of a Pile in Cubic Metres - Cone Shaped

##### Information

Bulking/Swell Factors for Various Excavated/Mined Materials##### New

- Elevation Grade from a Percentage
- Elevation Grade from Inches per Foot
- Elevation Grade Slope in a Percentage, Millimetres
- Horizontal Length from Angle and Slope Length
- Grade Percentage to Angle in Degrees
- Vertical Depth from a Slope Percentage and Horizontal Length
- Amount of Material from a Rectangle Shaped Excavation