6 FOCUSED TOOLS
Slopes, layouts & dimensions calculators
Plan simple layout measurements from rise, run and known dimensions.
Choose the right calculation
Use horizontal run for a slope calculation and perpendicular rise for height. A slope percentage is not an angle in degrees. These geometric tools do not establish compliance with local design or building requirements.
Find a tool for your question
Roof Pitch Calculator
Find a roof angle from its vertical rise and horizontal run.
Stair Riser Calculator
Find equal riser height from total rise and chosen number of risers.
Fence Post Calculator
Estimate posts for a straight open fence run with equal maximum spacing.
Ramp Slope Calculator
Calculate ramp gradient as rise over horizontal run.
Ramp Length Calculator
Calculate inclined ramp length from vertical rise and horizontal run.
Diagonal Square Check Calculator
Find the expected diagonal of a rectangular frame from its side dimensions.
Is a 10% slope the same as a 10° angle?
No. A 10% slope has a rise/run ratio of 0.10. Its angle is the arctangent of that ratio.
Useful next steps in other categories
Rectangle Area Calculator
Find the area of a rectangle from its length and width.
Circle Area Calculator
Calculate the area enclosed by a circle from its radius.