Enter your Bar Bending Schedule (BBS) cut lengths below and this tool uses a First-Fit-Decreasing (FFD) bin-packing algorithm to group them onto standard stock bars (9m / 12m / 13.5m), minimizing offcut waste. IS 1786 compliant unit weights, built for QS professionals, site engineers, and contractors. No signup required.
| # | Member | Drawing | Bar Mark | Dia | Length (m) | Qty | Total (m) | Wt/m (kg) | Total Wt (kg) | Actions |
|---|---|---|---|---|---|---|---|---|---|---|
No bars added yet. Use the form above. | ||||||||||
The tool sorts every required cut length (longest to shortest) for each bar diameter, then places each cut into the first stock bar with enough remaining length — a method called First-Fit-Decreasing (FFD). This typically uses fewer stock bars and less offcut waste than cutting in the order bars appear on a drawing.
What is a rebar cutting optimizer?
A rebar cutting optimizer groups required bar lengths from a Bar Bending Schedule (BBS) onto standard stock bar lengths to minimize leftover waste, using bin-packing logic instead of manual estimation.
What is the FFD algorithm?
First-Fit-Decreasing sorts required cut lengths from longest to shortest and places each into the first stock bar with enough remaining length, reducing offcut waste compared to unsorted manual cutting.
Is this tool free to use?
Yes — free for any number of bars and diameters, with no signup required.
Is it compliant with Indian standards?
Unit weight calculations follow the standard D²/162 approximation used under IS 1786 for TMT reinforcement bars, and supported diameters (6mm–40mm) match IS 1786 standard sizes.