Swap a Recipe Between Baking Pan Sizes

A free baking pan converter that lets you use a different tin than a recipe calls for. Choose the original pan and the pan you have — round, square or rectangular — and it works out the base area of each and the factor to scale the recipe ingredients by.

How to convert a pan size

Pick the original pan

Choose the shape and size the recipe was written for.

Pick your pan

Choose the shape and size of the pan you actually have.

Scale the recipe

Multiply each ingredient by the factor shown.

Match cake tins of any shape by area

Pan the recipe uses

Diameter

Pan you want to use

Diameter

Scale the recipe by

—

Original pan area

—

New pan area

The factor compares pan base areas, assuming the same batter depth. A deeper or shallower pan changes the bake — check for doneness a few minutes early and adjust temperature for very different depths.

Features

Any shape to any shape Recipe scaling factor Pan areas shown Metric and imperial

Frequently Asked Questions

How do I convert a round pan to a square pan?

A pan holds batter in proportion to its base area. A round pan area is π times the radius squared; a square pan area is the side squared. The converter compares the two and gives the scaling factor.

Does pan depth matter?

Yes. The converter assumes the batter sits at the same depth in both pans. A much deeper or shallower pan bakes differently — adjust the time and watch the centre.

A 23 cm round and a 20 cm square pan — are they the same?

Close. A 23 cm round pan has an area of about 415 cm²; a 20 cm square is 400 cm² — within a few percent, so a recipe usually swaps between them with no change.

Will baking time change?

It can. A larger, shallower pan bakes faster; a smaller, deeper pan bakes slower. Start checking a few minutes before the original time and use a skewer to test the centre.

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Swap a Recipe Between Baking Pan Sizes

How to convert a pan size

Match cake tins of any shape by area

Features

Frequently Asked Questions

How do I convert a round pan to a square pan?

Does pan depth matter?

A 23 cm round and a 20 cm square pan — are they the same?

Will baking time change?

How do you rate this tool?

Comments

Swap a Recipe Between Baking Pan Sizes

How to convert a pan size

Match cake tins of any shape by area

Features

Frequently Asked Questions

How do I convert a round pan to a square pan?

Does pan depth matter?

A 23 cm round and a 20 cm square pan — are they the same?

Will baking time change?

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How do you rate this tool?

Comments