Construction • Rebar

Rebar & Reinforcement Calculators

Calculate standard bar weights, total reinforcement tonnage, development length, and spacing for structural slabs and walls.

Construction Live Tool

Compute theoretical rebar steel weight per meter and total tonnage from bar diameter and lengths.

W = d² / 162 (kg/m, d in mm)

Construction Live Tool

Estimate number of reinforcement bars required for slabs and walls based on spacing and cover.

Bars = ⌊(L - 2c) / s⌋ + 1