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Cake Pan Converter
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Multiply by 0.71

9x5 loaf pan to 8x4 loaf pan

Make about 3/4 of the recipe. Each ingredient times 0.71. A 9x5 loaf pan covers 45 square inches. An 8x4 covers 32. Multiply the recipe by 0.71, about 3/4 minus a little. A full 9x5 recipe in an 8x4 pan will spill over the rim.

Pan in the recipe (what it says)
Pan you will use (what you have)

Multiply the recipe by

1.00×

Both pans are drawn to the same scale.
Recipe panYour pan
Area
Pan capacity
Which of my pans will work?

Tick the pans you own. We list the ones within about 10% of the recipe pan's volume, best first. Your ticks stay in this browser only.

Pans I own

    Bake time and temperature

    Rule of thumb: deeper batter, lower the oven 25°F (15°C) and add 5 to 15 minutes. Thinner batter, same oven, check early.

    Scale your ingredients

    Round amounts to

      9 x 5" loaf to 8 x 4" loaf

      Recipe panYour pan
      Pan9 x 5" loaf8 x 4" loaf
      Area45 sq in32 sq in
      Capacity8.6 cups6.1 cups
      Multiply by0.71
      • Loaf pans vary. Many pans sold as 9x5 measure 8 1/2 by 4 1/2 inside. Measure the top of your pan from inside edge to inside edge and type the real size in the tool.
      • Use the extra batter for muffins. Fill the liners two thirds full.
      • Both pans are the same depth, so keep the oven temperature and check at about the recipe time.

      Example: a plain butter cake

      This is a sample ingredient list scaled for this swap. Paste your own recipe in the tool above to scale it.

      Recipe saysUse
      2 cups all-purpose flour1 3/8 cups all-purpose flour
      1 1/2 cups sugar1 1/8 cups sugar
      1/2 cup (1 stick) butter3/8 cup (3/4 stick) butter
      3 large eggs2 large eggs
      3/4 cup milk1/2 cup milk
      2 tsp baking powder1 1/2 tsp baking powder

      Bake time and temperature

      For a recipe that bakes 35 minutes at 350°F: start checking at 33 minutes and expect it done by 37, at 350°F.

      The batter depth is close to the recipe pan. Keep the same oven temperature and check at about the same time.

      Fill any pan no more than two thirds full. Bake leftover batter as cupcakes.

      Questions about this swap

      What is the size difference between a 9x5 and an 8x4 loaf pan?

      The 9x5 holds about 8.6 cups to 2 3/4 inches deep, and the 8x4 holds about 6.1 cups. That is 71% of the batter.

      How do I scale three eggs to 71%?

      3 eggs times 0.71 is 2 1/8, so use 2 eggs. The tool rounds eggs to the nearest half and tells you how to measure half an egg.

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