### Rebar Material Calculator - Inch Calculator

This is needed to determine both the lengths of the rebar and how many rows and columns are needed. Subtract the clearance from the length and width to find the dimensions of the grid. For example, if the slab is 10′ x 10′ and the clearance is 3″, the size of the rebar grid will be 9′ 6″ x 9′ 6″.