Soap Batch Scaling Calculator

Scale a soap recipe up or down by a factor or to a target number of bars, keeping every percentage in step.

Scale by

Choose whether the original recipe is described by the bars it makes or by the weight of batter it produces.

Bars the recipe makes bars

Used when scaling by bar count.

Bars you want bars

Used when scaling by bar count.

Batter the recipe makes oz

Used when scaling by batch weight.

Batter you want oz

Used when scaling by batch weight.

Oils in the original recipe oz

Weight, from your recipe or from the batch size calculator.

Water as a percentage of oils %

The figure the original recipe uses, so it carries across to the scaled batch.

Fragrance or essential oil load %

A percentage of the oil weight. Your supplier's usage rate for that oil governs.

Lye solution planning figure %

Used only to put a planning weight on the lye line. The real lye figure comes from a lye calculator.

Extra batter to prepare %

Covers what stays in the pot and what is lost at the pour.

Reset

Free calculator by Handcraft worked examples and methodology No account, nothing stored.