Pan Size Conversion Chart for Baking
Recipe calls for a pan you don't own? Match the surface area (or batter volume) and adjust bake time slightly — shallower spreads bake faster, deeper pans need longer at the same temperature.
Round ↔ square ↔ rectangle equivalents
| Recipe pan | Closest swaps | Batter volume |
|---|---|---|
| 8" round | 8×8" square −— or 9" round (slightly thinner) | ~6 cups |
| 9" round | 8×8" square · 11×7" rect | ~8 cups |
| Two 9" rounds | 9×13" rect · three 8" rounds | ~14–16 cups |
| 9×13" rectangle | two 9" rounds · two 8×8" squares | ~14–16 cups |
| 9×5" loaf | 8×8" square (shorter bake) · 12 muffins | ~8 cups |
| 10" bundt | two 9×5" loaves · 9×13" (watch time) | ~12 cups |
| 9" springform | 9" round (line well) · 10" pie plate for crumb crusts | ~10 cups |
| 12-cup muffin tin | 9×5" loaf (+15–20 min) · 24 minis (−5 min) | ~6 cups |
Time & temperature adjustments
| Change | Adjustment |
|---|---|
| Batter sits shallower than recipe | Check 10–15% earlier |
| Batter sits deeper | Add 15–25% time; tent foil if browning fast |
| Glass or dark pan instead of light metal | Drop oven 25°F |
| Doubling into one big pan | Same temp, start checking at original time +20% |
The skewer rule settles everything: clean or with dry crumbs = done. Stock the sizes you actually bake: cake pans, loaf pans, muffin tins and sheets — or convert cups to grams with the measurement converter.