Rebar Calculator

Calculate rebar requirements for concrete slabs, foundations, and structures. Get accurate estimates for rebar quantity, weight, and costs.

✓ 100% Free • No Signup Required • Unlimited Use

Quick estimate mode (4 essential inputs). Toggle for 11 more professional options.

feet
Length of concrete slab
feet
Width of concrete slab
inches
Slab thickness affects rebar size/spacing
Larger rebar for heavier loads

* Estimates are based on standard industry calculations. Actual costs may vary based on location, material quality, and local market conditions. Always consult with professionals for precise project estimation.