Enter your parts list, get the cutting layout for standard 4×8 sheets - sheet count, diagram, and waste percentage before you buy the plywood.
Open the Optimizer →A standard 4×8 sheet of plywood measures 48 × 96 inches (1220 × 2440 mm) - 32 square feet of material. That is the format every big-box store and lumber yard stocks, the size that fits (diagonally, barely) in a pickup bed, and the default stock size in our optimizer. Hardwood plywood is usually a true 48 × 96; some sanded panels run a hair under, so measure before you cut tight-tolerance work.
The number a project lives or dies on is parts per sheet, and that depends on part dimensions, blade kerf, and how the parts are arranged. Pencil estimates miss in both directions - they ignore the kerf on tight fits and miss rotated layouts on awkward sizes. A 2D bin-packing pass gives the count you can actually cut, plus the leftover as usable offcuts.
| Part size | Full-size parts per sheet | Pencil-grid estimate |
|---|---|---|
| 24 × 48 in (half-depth panels) | 1 | 4 |
| 24 × 24 in (shelf squares) | 3 | 8 |
| 16 × 32 in (cabinet sides) | 5 | 9 |
| 12 × 24 in (drawer parts) | 10 | 16 |
| 11.25 × 36 in (bookshelf shelves) | 10 | 8 |
The middle column comes from running each size through this site's optimizer at a 1/8" (3.2 mm) kerf. Two things jump out. First, the exact-fit trap: 24 divides into 48 perfectly on paper, but the blade takes its 1/8" between every pair of pieces, so a 96" length yields one true 48" piece and one at 47 7/8" - not two. If your "24-inch" parts can tolerate 23 7/8", tell the optimizer 23.875 and watch the sheet count drop. Second, the reverse surprise: for awkward sizes like 11.25 × 36 the optimizer beats the pencil grid (10 vs 8) by turning a column of parts sideways - a layout most people don't sketch.
Every pass of a 1/8" blade turns material into sawdust. Rip a 48"-wide sheet into 16" strips and you get two full strips plus one at 15 3/4" - the third "sixteen" never exists. On a 30-part cabinet job the kerf quietly consumes most of a square foot. Set your blade's actual kerf in the optimizer and the math is handled for you; background in how kerf affects waste.
Rough-cut first. A full sheet is heavy and awkward on a table saw. Crosscut it into manageable sections with a track saw or circular saw, then do precision cuts. Plan the rough cuts from the optimizer's diagram so each section contains complete parts.
Mind the factory edge. Factory edges are straight but rarely pristine. If a part needs a finished edge, plan a light trim cut - and tell the optimizer the usable sheet is 47.5 × 95.5 rather than the full 48 × 96.
Keep offcuts honest. The optimizer's waste report shows which sheet has the big leftover piece. Label it and store it flat - next project's drawer bottoms are usually hiding in this project's offcut.
Plywood Cut Calculator · MDF Cut Calculator · Sheet Cutting Optimizer · Project Templates