Baking Pan Converter
Your Pan
diameter (in)
Area: 63.6 sq in
Equivalent Size
8" side
Common Equivalents
9" round ≈ 8" square (both ~64 sq in)
10" round ≈ 9" square (both ~79 sq in)
9×13" rect ≈ two 9" rounds
Quick Facts
- •Round area = π × (d/2)²
- •Square area = side²
- •9" round ≈ 8" square in area
- •Adjust baking time for different pan depths
Related Tools
Frequently Asked Questions
How do I substitute a round pan for a square pan?
Calculate the area of each. A 9" round pan (63.6 sq in) is close to an 8" square pan (64 sq in).
Does pan shape affect baking time?
Yes. Thinner/wider pans bake faster. Deeper pans may need lower temp and longer time.
What is the most common baking pan size?
9" round, 8" square, and 9×13" rectangle are the most common.
Can I use two smaller pans instead of one large one?
Yes, if total area is similar. Reduce baking time since layers will be thinner.
How do I convert pan sizes between inches and cm?
1 inch = 2.54 cm. A 9" pan = 23 cm pan.