Order Quantity Split By Size Calculator

Work out order quantity split by size instantly with clear inputs, formula shown and shareable results.

About Order Quantity Split By Size Calculator

Size breakdown allocates the order across sizes by percentage share, with the residual assigned to the remaining sizes. Getting this right matters commercially: a mismatch between the size curve and actual demand leaves unsold extremes that end up marked down, which is where garment margin is usually lost.

Formula

Size split

Quantity per size = total order x size share %; balance = total - allocated sizes

Worked example

With the default values below, Order Quantity Split By Size Calculator returns Medium Size Quantity of 4,800. Change any input above and every figure here is recalculated in your browser.

Inputs used

Total Order Quantityminimum 1 pieces: 12,000 pieces
Small Size Shareaccepts 0–100 %: 15 %
Medium Size Shareaccepts 0–100 %: 40 %
Large Size Shareaccepts 0–100 %: 30 %

Results

Medium Size Quantity: 4,800
Small Size Quantity: 1,800
Large Size Quantity: 3,600
Balance For Other Sizes: 1,800

Step by step

1Values used
2Size split
3Medium Size Quantity= 4,800
4Small Size Quantity= 1,800
5Large Size Quantity= 3,600
6Balance For Other Sizes= 1,800

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, fees or charges or compounding frequency into account.
Figures are rounded for display to whole numbers, 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

Where should the size curve come from?

Historical sell-through for the same category and market, not a symmetric assumption. Curves differ markedly between markets and channels.

How does the size split affect cutting?

Markers combine sizes, and the ratio in the marker should reflect the order ratio. A marker built on the wrong ratio means either extra lays or over-production of some sizes.