Square pan to round pan converter
Recipe for a square pan but you have a round one? Find the equivalent diameter first.
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How to use it
- Enter square pan side and unit.
- The result appears straight away and updates as you edit.
- Copy the result, or copy a link that keeps the same values to share it.
How it is calculated
Diameter = 2 × side ÷ √π ≈ side × 1.1284, so that π × (diameter ÷ 2)² equals side².
Example
Inputs: Square pan side = 8, Unit = Inches. Result: Equivalent round diameter: 9.03 in; Area: 64 sq in.
Limits and caveats
- It matches area only and assumes the same depth.
- A round tin has no corners, so the middle may take slightly longer.
Questions about this tool
What round tin equals a 20 cm square pan?
A round tin about 22.6 cm across; a 22 or 23 cm tin works.
What round pan equals an 8 inch square?
A round pan about 9 inches across (9.03 in), a common size.
What if my round tin is smaller?
Use the pan size converter to get a scaling factor, or bake the extra batter as cupcakes.