Convert cake recipes between different tin sizes and shapes.
Ingredient Multiplier
1.32x
Temp adjust: -10°C
Original Area
314 cm²
New Area
415 cm²
Time Adjust
Reduce by 5-10 mins
Ever found the perfect cake recipe, only to realise it calls for a tin size you don't own? This Calculator Site tool is your solution. Instead of guessing, you can accurately scale your ingredients up or down. Our calculator works by comparing the surface area of the original tin to the new tin. This gives you a precise multiplier for all your ingredients.
For example, if you are moving from a 20cm round tin to a 23cm round tin, the new tin has about 1.32 times the area. Therefore, you should multiply all your ingredient quantities by 1.32. This ensures the depth of the cake batter remains consistent, which is crucial for even baking. You can find other useful kitchen converters like our Oven Temperature Converter to help with your baking.
Adjusting Baking Time & Temperature
Scaling ingredients is only half the battle. A larger, shallower cake will bake faster, while a smaller, deeper cake will need more time. As a rule of thumb, for a 20-25% change in area, adjust the baking time by 5-10 minutes. For larger changes, you may also need to adjust the oven temperature by 10°C to prevent the outside from burning before the middle is cooked. Check out our Take-Home Pay Calculator to see how much you can save by baking at home.
A common baking dilemma is substituting a round tin for a square one. It's important to know that a 20cm round tin and a 20cm square tin are not equivalent. The square tin has a significantly larger surface area.
~27%
More area in a square tin vs round
18cm
Square tin equivalent to 20cm round
1.27x
Multiplier for 20cm round to 20cm square
How to use this Calculator Site tool
Simply enter the size and shape of the cake tin your recipe calls for in the 'Original' fields. Then, enter the details for the tin you want to use in the 'New' fields. The calculator will instantly provide you with an 'Ingredient Multiplier'. Multiply all of your recipe's ingredients by this number to get the perfect quantities for your new tin.
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