The slope calculator allows you to calculate the angle of a slope, that could be the angle of your driveway, the pitch of a roof, the angle of a hill etc. Slope calculations are particularly useful for ensuring that water flows correctly off a surface and for reducing stress, friction and energy when moving heavy objects using a ramp.

A Slope is defined as an inclined portion of ground, and is also known as a "Grade".

It can be specified in 4 different ways, angle of inclination, percentage, per mille and as a ratio.

**Note:** The ratio is specified as "1 in n" rather than the mathematical "1:n".

You may also be interested in the Gradient Calculator.

You may also be interested in the Gradient Calculator.

This Slope Calculator includes the following algorithms

*Slope Length is the square root of (rise squared plus run squared)**Angle of inclination is the tangent of (rise devided by run)**percentage is 100 multiplyed by (rise devided by run)**per mille is 1000 multiplyed by (rise devided by run)**ratio is 1 to (run devided by rise)*

You may also find the following Math calculators useful.

- 4th Degree Equation Calculator
- Ratio Division Calculator
- Ratio Calculator
- Equivalent Ratio Calculator
- Fraction Calculator
- Equivalent Ratios Calculator
- Ratio Multiplication Calculator
- Math Calculators
- Definition of a Ratio
- Z-Score Calculator
- Writing Fractions In The Lowest Terms Calculator
- Sig Fig Calculator