Stairs
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Number of risers16
Riser height17.5 cm
Tread depth (2R + T = 63 cm)28 cm
Total run420 cm
Pitch angle32.01 °
Stringer length504.78 cm
Worked example
Given: Total rise = 280 cm; Target riser height = 17 cm
Result: Number of risers = 16; Riser height = 17.5 cm; Tread depth (2R + T = 63 cm) = 28 cm; Total run = 420 cm; Pitch angle = 32.01 °; Stringer length = 504.78 cm
How it is calculated
1. Enter the values you know. 2. The calculator converts them to base units and applies the formula. 3. The result is shown in the unit you choose.
Frequently asked questions
How do I calculate it?
Given: Total rise = 280 cm; Target riser height = 17 cm. Result: Number of risers = 16; Riser height = 17.5 cm; Tread depth (2R + T = 63 cm) = 28 cm; Total run = 420 cm; Pitch angle = 32.01 °; Stringer length = 504.78 cm.
Is the calculator free and private?
Yes. It is free, needs no sign-up and runs in your browser — the numbers you type stay on your device.