Can I always swap pans just by matching volume?

Roughly, yes — equal volume means the batter will fit. But pan shape affects bake time: a shallow wide pan bakes faster than a deep narrow one of the same volume. Rule of thumb: if the new pan is shallower, check 5–10 min earlier; if deeper, expect 10–20% longer.

What's the standard pan depth used here?

2 inches (5 cm) for most pans, except loaf pans (2.5 inches / 6.5 cm) and bundt/tube pans (actual specified depth). Most recipes assume ~1.5 to 2 inches of filled batter depth, leaving room to rise.

Why does my cake recipe say 'do not exceed 2/3 full'?

Cakes rise 50–100% during baking. Filling a pan to the brim causes overflow and uneven baking. Target 1/2 to 2/3 full for cakes and muffins; up to 3/4 for denser bar cookies and brownies which rise less.

Baking Pan Size Converter & Substitution

Cooking & Kitchen· 5 tools

Free baking pan size converter. Got a brownie recipe for a 9×13-inch pan but only a 9-inch round? This tool computes the volume of each pan and tells you the ratio — so you know whether your batter will fit, how to scale it, and roughly how bake time should change. Supports round, square, rectangle, loaf, tube, and bundt pans in inches or cm.

Dimensions

Original pan

Long side

Short side

Depth

Target pan

Diameter

Short side

Depth

Original volume

16.2 cups

3835 ml

Target volume

8.8 cups

2085 ml

Volume ratio

54%

×0.54 recipe scale

Target pan is smaller. Scale recipe down, or use excess batter for a few cupcakes.

Frequently Asked Questions

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