Rebar Calculator

Estimate rebar quantity for a slab using spacing, bar length, and waste allowance.

1Slab Inputs

Length (ft)

ft

Width (ft)

ft

Rebar spacing (in)

in

Bar length (ft)

ft

Waste (%)

%

Cost per bar ($)

$

2Results

Bars along length0

Bars along width0

Total bars needed0

Total linear feet0.0 ft

Estimated cost$0.00

Notes

Spacing is center-to-center.
Add extra for laps, hooks, and cutting loss.
Confirm bar length and stock size with your supplier.

Frequently Asked Questions

Related Calculators

Concrete Calculator

Calculate concrete volume for slabs, footings, walls, and columns

Concrete Cost Calculator

Estimate concrete materials and cost

Square Footage Calculator

Measure slab area quickly

Need help estimating larger projects?

Our team of experts can provide personalized assistance for complex construction projects.