Rebar Material Calculator

Calculate total rebar length, piece count, and weight in kg or tons for slab reinforcement grids.

Slab Length (ft) 30 ft

15 ft 30 ft 50 ft 100 ft

Slab Width (ft) 20 ft

10 ft 20 ft 40 ft 60 ft

Rebar Size

Grid Spacing (in)

Total Rebar Weight

0.23Metric Tons (511 lbs)

Total Grid Length

40-ft Stock Bars

Masonry

Frequently Asked Questions

Understanding rebar grid estimation.

Rebar weight per meter (kg/m) = d² / 162, where d is the diameter in mm. For example, 10mm rebar weighs (10² / 162) = 0.617 kg/m.

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