What is the ratio from 8 inch round to 6 inch round?
The area ratio is about 0.56x. 100 g of an ingredient becomes about 56 g.
Kitchen
Baking Pan Size Converter
Estimate ingredient amounts when changing pan sizes, such as scaling an 8 inch round cake recipe to 6 inch.
Updated: May 15, 2026
Input
Scale ingredient amounts from the area ratio between baking pan sizes.
This uses area ratio only. Adjust batter height, bake time, eggs, and leavening for the real recipe.
Result
x0.56
Ingredient ratio
56.3g
Scaled amount
100g
Original amount
50.3 in²
Source area
28.3 in²
Target area
Use this as a guide and adjust for your real conditions.
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How to use
- Enter the source and target pan shape and size.
- Enter the ingredient amount and unit.
- Area ratio and scaled ingredient amount appear on the right.
Useful tips
- Useful when you want to scale an 8 inch round cake recipe to 6 inch; adjust inputs to compare outcomes.
- Useful when you want to adjust amounts between rectangle and round pans; adjust inputs to compare outcomes.
- Prefer product labels, recipe notes, and equipment markings when available.
- When unsure, start with a smaller or shorter estimate and adjust from the actual result.
Formula
Round pan area = π × (diameter ÷ 2)². Rectangle area = width × length. Ingredient ratio = target area ÷ source area.
Notes
- This is an area-ratio estimate; batter height and bake time need separate adjustment.
- Round eggs, leavening, and small amounts for practical cooking.
- Pan depth and material can change the final bake.
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FAQ
Can it convert bake time too?
No. This tool only scales ingredient amounts by area. Bake time depends on batter depth, pan material, and oven behavior.
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