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Tools / Baking tin converter

Baking tin converter

Enter the tin from the recipe and your tin. The factor is the ratio of the base areas (same height assumed). Paste the ingredients to scale them.

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Recipe tin

Your tin

Factor
–

Factor = base area of your tin ÷ base area of the recipe tin (round: π × r², rectangular: l × w). Eggs are rounded to half eggs. Baking time changes less than the amounts – check with a skewer.

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🔒 Runs entirely in your browser – nothing you enter is uploaded or stored.

How to use it

  1. Choose the shape and size of the recipe tin.
  2. Choose the shape and size of your tin.
  3. Paste the ingredient list and read the scaled amounts.
Your inputs live only in the link, not on our server.

Last checked: October 2026. Found a mistake? Use the form below – we fix confirmed errors and update the date.

Frequently asked questions

How do I convert a 26 cm recipe to 20 cm?

Factor (20 ÷ 26)² ≈ 0.59 – use about 60 % of every ingredient.

Does the baking time change?

Slightly: smaller cakes bake a bit faster, larger ones a bit longer at the same temperature.

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