Rebar & Reinforcement Calculators
Calculate standard bar weights, total reinforcement tonnage, development length, and spacing for structural slabs and walls.
Civil & Structural Live Tool
Rebar Weight Calculator
Compute theoretical rebar steel weight per meter and total tonnage from bar diameter and lengths.
W = d² / 162 (kg/m, d in mm) Civil & Structural Live Tool
Rebar Quantity Takeoff Calculator
Estimate number of reinforcement bars required for slabs and walls based on spacing and cover.
Bars = ⌊(L - 2c) / s⌋ + 1