PanRatio
Open calculator

Exact decimals · explicit pi

Scale the recipe to the pan, not the diameter.

PanRatio compares total base area and assumes the same batter depth. It never guesses baking time or temperature.

Local browser calculation

Pan area comparison

No recipe upload
Pan set named by the recipe
in
Pan set you will use
in
Optional quantity example
Unit-free: grams, cups, eggs, or another written quantity.

The factor preserves average batter depth by base area only. Pan capacity, wall shape, fill level, material, recipe behavior, oven, temperature, and doneness remain outside the result.

Recipe multiplier

Total-area ratio

Multiply every scalable quantity by×1.265625+26.5625%
MeasurementRecipe pansYour pans
Inside dimensions8 in × 19 in × 1
Total base area≈50.2655 in²≈63.6173 in²
Area expression16 × π20.25 × π
Original example amount250
Scaled example amount≈316.4063

20.25 × π ÷ 16 × π

The ratio is exact because pi cancels or neither pan uses pi. A rounded sample amount is marked with ≈.