Baking Pan Size Converter
Find equivalent baking pan sizes for round, square, and rectangular pans.
Convert between inches and cm.
Enter your pan dimensions to calculate area, then compare with another pan size.
Pan A (your recipe's pan)
Pan B (the pan you have)
Convert a pan measurement between inches and centimeters.
When substituting baking pans, the key is matching the area of the pan. Pans with similar areas will hold the same amount of batter.
Area formulas:
- Round pan: area = π × (diameter / 2)²
- Square pan: area = side × side
- Rectangular pan: area = length × width
Common pan equivalents (by area):
| Pan | Size (in) | Size (cm) | Area (in²) |
|---|---|---|---|
| Round | 8" dia | 20 cm | 50.3 |
| Square | 7" | 18 cm | 49.0 |
| Round | 9" dia | 23 cm | 63.6 |
| Square | 8" | 20 cm | 64.0 |
| Round | 10" dia | 25 cm | 78.5 |
| Rectangular | 9" × 13" | 23 × 33 cm | 117.0 |
| Round | 12" dia | 30 cm | 113.1 |
Inches to centimeters:
- 1 inch = 2.54 cm
Volume scaling tip: If the pan area differs, adjust the recipe proportionally. New amount = original amount × (new area ÷ original area).