Buttercream & ganache calculator

Scale a covering quantity you already trust from one cake to another.

Known quantity Buttercream or ganache used (g)

Cake you know

Shape Width or diameter (cm) Length (cm, rectangles only) Finished height (cm) Filled layers

Cake you want to cover

Shape Width or diameter (cm) Length (cm, rectangles only) Finished height (cm) Filled layers

Assumption

This scales top, side and filling surface area. It assumes you apply roughly the same thickness and does not add an allowance for piping, decoration or waste.

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Related free tools

Cake-tin converter Find the recipe multiplier for a different cake-tin shape, size or quantity. Ganache ratio calculator Split a total ganache quantity into chocolate and cream using your chosen ratio. Cake portion estimator Estimate servings from a cake's dimensions and your intended slice size.

Free baking tools, made by BatterBee.
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