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`r = tan( theta )*100`
Enter a value for all fields
The Degree to Percent Grade calculator converts an angle in degrees to a percent grade.
INSTRUCTIONS: Enter the following:
- (θ) Degrees (angle) Inclined
Percent Grade (r): The calculator returns the grade in percentage.
The Math
Percent grade is the slope of an incline, often referred to as rise over run where the run is 100 units (e.g., feet, meters, inches). In short, it a ratio. To get the percent grade you take the tangent of the angle. This will return the percent grade of the incline. We then multiply it by 100 to put it in the format we are use to seeing for percents.
The formula for percent grade is:
`r = 100*tan(theta)`
where:
- r = grade as a percent
- `theta` = angle of grade
Vehicle Calculators
- Approach (Departure) Angle: Computes the maximum angle of a ramp onto which a vehicle can climb without scraping.
- Degree to Percent Grade: Converts a grade to a degree angle.
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- Camber offset - Wheel camber (tilt) calculation of offset
- Breakover Angle: Compute maximum angle that a vehicle can drive over without the ground touching the vehicle's undercarriage.
- Time to Overtake: Computes the time for one object to overtake another.
- Distance to Overtake: Computes distance traveled to overtake another.
- Speed to Overtake: Computes the average velocity to overtake another.
- Distance Traveled: Computes the distance traveled over a period of time.
- Speed from Skid Marks: Estimates the speed of a vehicle based on length of skid marks.
- Braking Distance: Estimates distance to stop a vehicle based on initial velocity and braking coefficient.
- Total Stopping Distance: Computes the distance to stop a vehicle based on the initial velocity, reaction time and a braking coefficient.
- Speed from the Braking Distance: Estimates the initial speed based on the distance to stop a vehicle and the a braking coefficient.
- Used Car Price Comparison: Estimates the better value between two vehicles based on their mileage, cost and expected lifespan (miles).