Baking pan converter

Quick answer

To swap pan sizes, match the total area. A 9-inch round pan (about 64 in²) is close to an 8-inch square (64 in²). When you change pan size, keep the batter depth similar and adjust the baking time, checking a few minutes early.

This baking pan converter helps you swap one tin size for another and adjust your batter to fit. Because pans hold different volumes, using the right size keeps your bake from overflowing or drying out.

In summary: A baking pan converter compares the volume of two pans. For example, a 9-inch round pan and an 8-inch square pan hold a similar volume, so you can usually swap them without changing the recipe.

How to use the baking pan converter

  1. Choose the pan size your recipe uses.
  2. Choose the pan size you actually have.
  3. See the volume difference and how to adjust the batter.

Common pan volumes

Pan Approx. volume
8-inch round 1.4 litres
9-inch round 1.8 litres
8-inch square 1.9 litres
9×13-inch 3.3 litres

Why a baking pan converter matters

If a pan is too small, the batter overflows; if it is too large, the cake bakes flat and dry. So this baking pan converter compares volumes and tells you whether to scale the recipe up or down.

Frequently asked questions

Can I use a round pan instead of square? Often yes, if the volumes are close, which this baking pan converter shows.

Do I change the bake time? A shallower, wider pan bakes faster, so check early.

What if my pan is much bigger? Scale the recipe up so the batter depth stays similar.

Related tools: Recipe Scaler, Oven Temperature Converter.

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Written by Norman

Norman is a full-stack software engineer who builds precise digital tools for real-world kitchen challenges, born from his own struggles converting US recipes to metric mid-bake. When he's not debugging code, he's perfecting sourdough and pastry recipes, turning measurement frustration into foolproof, data-driven baking success.