Rebar Calculator

Reinforcement steel quantity for slabs, beams & columns

Element & Rebar Specification

Element Type

Length (m)

Width (m)

Bar Diameter

Bar Spacing (mm centres)

Concrete Cover (mm)

AS 3600: slab 20mm, beam/col 30–50mm, exposed 50mm

Lap Splice Length (× bar dia)

Wastage / Offcuts (%)