A free rebar cutting calculator that plans how to cut reinforcing bar from your stock lengths with the least waste. Enter the bars you have and the pieces you need for footings, slabs, walls, and columns, and get a cut list that minimizes scrap and the number of bars you buy.
🚀 Open the Rebar Cut List OptimizerRebar is sold in fixed stock lengths, but jobs need many shorter pieces. Cutting without a plan leaves short, unusable drops at the end of every bar. A rebar cut list optimizer solves the one-dimensional cutting-stock problem: it arranges all of your required lengths across the stock bars so the leftover scrap is as small as possible. That means fewer bars ordered, less waste hauled off, and a clear cut sheet for the crew.
Enter whichever lengths you actually buy. Common options:
The calculator uses inches, so convert feet to inches (multiply by 12) or work in your own unit consistently. Fractions like 240 1/2 are accepted.
Set the blade kerf if you cut rebar with an abrasive chop saw or band saw, and that gap is reserved between every cut so the plan matches reality. If you shear rebar, set the kerf to 0 — shearing removes virtually no material. You can also optimize for the fewest bars or the lowest cost when bar prices differ.
You have 20 ft (240 in) #4 bars and need:
The optimizer packs those lengths onto as few 240 in bars as possible and shows the drop left on each bar — so you know exactly how many bars to buy and where the usable offcuts are.
Yes. It runs in your browser and is free for everyday rebar cut lists — enter your stock bars and the cuts you need and get an optimized cutting plan with no sign-up.
Any length. Retail rebar is usually 20 ft, while mill lengths run 30, 40, or 60 ft. Enter each stock length you have (in inches — 20 ft is 240 in) and the optimizer plans around them.
Yes. Set the kerf width for an abrasive or band saw and it is reserved between cuts. If you shear rebar, set the kerf to 0 since shearing removes almost no material.
The optimizer works with straight cut lengths. Add your bend, hook, or lap-splice allowance to each piece length before entering it, then optimize the finished lengths.
