Stair Calculator

Name: Stair Calculator
Rating: 4.9 (2341 reviews)

Calculate step dimensions for safe, code-compliant stairs.

Calculator

Total Rise Height (cm)

Preferred Riser Height (cm)

Preferred Tread Depth (cm)

Result

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NBC India: Riser 150–190 mm, Tread minimum 250 mm. The 2R+T rule: 2×Riser + Tread should be 60–65 cm for comfortable climbing. For residential stairs, 17–18 cm riser with 28–30 cm tread is ideal.