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How to Scale a Recipe for a Different Pan Size

To move a recipe to a different pan, scale by area (and depth), not by the pan’s name. Match the volume the batter fills.

🍽️ Recipe Scaler

Step by step

  1. Calculate each pan’s area. Round: π × radius². Rectangular: length × width.
  2. Divide the new pan’s area by the old pan’s area to get the multiplier.
  3. A 9-inch round (≈64 in²) vs an 8-inch round (≈50 in²) is about a 1.27× difference.
  4. Multiply ingredients by that ratio and keep the batter depth similar.
  5. Adjust baking time for any change in depth, checking early.

FAQ

Can I use a 9x13 pan instead of two 9-inch rounds?

Roughly yes — a 9×13 pan (117 in²) is close to two 8-inch rounds (≈101 in²) or a bit less than two 9-inch rounds (≈127 in²). Watch the depth and baking time.

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