Tool

Cake Tin Size Converter

Scale any recipe from one tin to another: round, square or rectangular.

A round, deep cake tin — Photo: Douglas P Perkins via Wikimedia Commons, CC BY 3.0, cropped

Recipes scale with the area of the tin, not its width. A 23 cm round tin holds about a third more than a 20 cm one. Enter the tin your recipe uses and the tin you own, and multiply every ingredient by the factor shown.

Convert tin sizes

Tin in the recipeShape

Diameter (cm)Width (cm)

Your tinShape

Diameter (cm)Width (cm)

Multiply every ingredient by

1.00

Baking time

A bigger tin with the same depth of batter bakes in a similar time; a deeper batter takes longer. Start checking at the original time, then every 5 minutes. A skewer pushed into the centre should come out clean.

Eggs

Round to the nearest whole egg. For awkward fractions, beat the eggs and weigh them. A medium egg is about 50 g out of its shell.