Free tool

How many parts fit on a sheet?

Enter the size of the sheet and of the part, and SliceLab tells you how many fit with guillotine cuts, allowing for the saw kerf and the edge trim. Free, no sign-up.

Units

Sheet

Length

Width

Part

Length

Width

The part can be rotatedUntick it if the part has grain that must run along the length of the sheet.

Cutting

Saw kerf

Edge trim

How many parts do you need? (optional)

To tell you how many sheets you need.

Example

parts per sheet

Parts of 23 5/8 × 15 3/4 in on a 96 × 48 in sheet. Yield: 96.9 %.

Does your project have more parts?

Open it in the optimizer with this sheet and this part, add the rest and work out the whole plan. No sign-up.

How it is worked out

With guillotine cuts: each cut runs from one side to the other of the piece it splits, as on a panel saw or a table saw.
The saw kerf is deducted at every cut. A circular saw or panel saw blade usually takes 3 to 4 mm, roughly 1/8 inch.
The edge trim cuts back the edges of the sheet before you start, because they often arrive knocked or chipped: with 10 mm, a 2440 × 1220 mm sheet leaves 2420 × 1200 mm usable.
If the part can be rotated, both ways round are tried and combined on the same sheet. If it has grain, it is not rotated.
With identical parts, the figure is the exact maximum with guillotine cuts: with that kerf and trim, not one more fits.
It is the same calculation the SliceLab optimizer does with a whole project, with parts of many sizes and several sheets.

Common sheet sizes

The most common is 2440 × 1220 mm, especially for plywood and MDF. Melamine and chipboard come in many more, depending on the manufacturer: 2440 × 1830, 2750 × 1830, 2800 × 2070 or 2850 × 2100 mm. Use the size of the sheets you are going to buy.

In the United States and Canada sheets are sold in inches: the standard is 96 × 48 (4 × 8 feet), MDF often comes slightly larger, at 97 × 49, and the thickness is not what the label says: 3/4 plywood measures 23/32. Calculate in inches and enter the sizes as you would in the shop: 23 7/8, 15-3/4 or 3/4.

Don't have your parts list yet? Learn how to make a cabinet cut list step by step.

Guides

How to make a cabinet cut list, step by step
Learn to work out every part of a cabinet: sizes, gaps, grain and edge banding, with a kitchen base unit as the example and a free cutting plan at the end.
How to calculate edge banding for furniture
Which sides get edge banding, which thickness and width to choose, how much extra to buy and whether to subtract it from the cut size, with a sample bookcase.
Saw kerf and edge trim: why your parts don't fit
How much the saw takes at every cut and the trim at every edge, why two 1220 shelves don't come out of one sheet and which sizes do fit, with a table.
Sheet sizes and thicknesses, in millimetres and in inches
The most common sizes and thicknesses of melamine, MDF and plywood, the US ones in inches, and why 3/4 plywood measures 23/32, with a one-sheet bookcase.
How to read a cutting plan and its cutting sequence
What each colour and number on a cutting plan means, what the phase, measure and position of each cut tell you and which order to cut in, with a desk example.