Work out order quantity split by size instantly with clear inputs, formula shown and shareable results.
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.
Size split
Quantity per size = total order x size share %; balance = total - allocated sizes
Historical sell-through for the same category and market, not a symmetric assumption. Curves differ markedly between markets and channels.
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.