Spike's Calculators

Calculate the amount of concrete needed for stairs on a slope between two elevations. The volume is calculated from the stair riser height, the run length, the stairs width, and the throat depth of the stairs. The number of risers equals the number of steps.

This calculator uses inches for measurements.

- enter the number of steps
- the riser height of the step(s) in inches
- the run of the step(s) in inches
- the thickness (depth) of the throat in inches
- the width of the stairs in inches

- the total rise of the step(s) in inches
- total run of the step(s) in inches
- the slope of the stairs in degrees
- the amount of concrete needed in cubic feet
- in cubic yards
- in cubic metres

one cubic inch (in³) = 0.000578703703703704 cubic feet (ft³) one cubic inch (in³) = 0.0000214334705075445 cubic yards (yd³) one cubic inch (in³) = 0.000016387064 cubic metres (m³)

To convert cubic feet to cubic yards multiply cubic feet * 0.037037037037037 To convert cubic feet to cubic metres multiply cubic feet * 0.028316846592 To convert cubic yards to cubic metres multiply cubic yards * 0.764554857984