Nesting Efficiency Calculator

Work out nesting efficiency instantly with clear inputs, formula shown and shareable results.

About Nesting Efficiency Calculator

Nesting efficiency is the part area actually cut divided by the sheet area. The gap to the theoretical maximum comes from kerf width, part-to-part and part-to-edge clearances, grain direction constraints and the geometry of the parts themselves. Material cost per part is what the nest ultimately determines.

Formulas

Nesting efficiency

Efficiency % = part area x parts per sheet x 100 / sheet area

Cost

Material cost per part = sheet cost / parts per sheet

Worked example

With the default values below, Nesting Efficiency Calculator returns Nesting Efficiency of 79.333%. Change any input above and every figure here is recalculated in your browser.

Inputs used

Sheet Areaminimum 0 m2: 3 m2
Area Of One Partminimum 0 m2: 0.085 m2
Parts Nested Per Sheetminimum 1: 28
Sheet Costminimum 0: 2,400

Results

Nesting Efficiency: 79.333%
Skeleton / Waste Area: 0.6200
Material Cost Per Part: $85.714
Theoretical Maximum Parts: 35

Step by step

1Values used
2Nesting efficiency
3Cost
4Nesting Efficiency= 79.333
5Skeleton / Waste Area= 0.6200
6Material Cost Per Part= 85.714
7Theoretical Maximum Parts= 35

Assumptions and limits

The result is derived only from the 4 inputs listed above. Anything not among them is not part of the calculation.
In particular, this calculator does not take inflation, tax or compounding frequency into account.
Figures are rounded for display to 4 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Frequently Asked Questions

What efficiency is achievable?

70-85% for mixed rectangular parts, 50-70% for complex profiles with awkward geometry, and above 90% only for parts that tile naturally. Combining several part types on one nest usually gains 5-15%.

Does common-line cutting help?

Substantially — sharing a cut line between two adjacent parts removes one kerf and one clearance gap, improving both efficiency and cutting time. It requires tight machine accuracy.