tooloctopus.

Cake calculator

Scale a round-pan recipe by the ratio of the two cylindrical batter volumes.

On your device · No account
Privacy details

Cake calculator processes your input in this browser. Inputs and results are excluded from analytics. Recent tools save tool names, visit counts and last-visit times. Saved tools store only their names. Draft saving is optional and stays on this device; delete saved text with the draft controls. Loading text from a URL is optional and contacts that server; its URL and your IP address are visible to the server. An optional “Use in” action keeps a handoff in this tab. The next tool removes it on arrival and ignores it if more than a minute has passed.

Copy link includes the inputs you choose to share in the address. Anyone with that link can reopen them. Files and generated results are excluded. Password and key tools share settings only.

More inputs and assumptions

Answer

…

Scale a round-pan recipe by the ratio of the two cylindrical batter volumes.

More results
Precision and calculation record
Rounding changes displayed numbers, not the calculation. Text, fractions, matrices and CSV schedules keep their own formatting. Automatic keeps up to 12 significant digits, with money shown to cents where applicable.
Saved scenario
Save the current answer, then change an input to compare. This clears when you leave.
Formula and assumptions
Use internal pan diameters and intended batter depth in one unit. Multiply ingredient quantities by the ratio. Portion count assumes unchanged portion volume. This does not determine baking time, safe doneness, pan fill limits, leavening changes or servings for a tiered cake.
Automatic precision shows numbers to 12 significant digits. Thousands separators such as 1,000 are accepted; use a dot for decimals.
Scratch calculator
Use +, −, ×, ÷, parentheses and %. A percentage is divided by 100. This does not change the main tool.
Reset reloads the tool with its starting values and releases open files and device controls. Saved drafts stay on this device until you delete them.
Links include your inputs and settings. Anyone with the link can see them, so leave out private text. Files and generated results are left out; random draws run again.
Keyboard shortcuts
Updated 
Using Cake calculator
Scale a round-pan recipe by the ratio of the two cylindrical batter volumes.
Use internal pan diameters and intended batter depth in one unit. Multiply ingredient quantities by the ratio. Portion count assumes unchanged portion volume. This does not determine baking time, safe doneness, pan fill limits, leavening changes or servings for a tiered cake.
Next: Ratio calculator
Next: Pizza calculator
A worked example
Example inputs: original round pan diameter = 8, new round pan diameter = 10, original batter depth = 2, new batter depth = 2, original servings = 12. Recipe volume multiplier = 1.5625.
Before you use the result
Use internal pan diameters and intended batter depth in one unit. Multiply ingredient quantities by the ratio. Portion count assumes unchanged portion volume. This does not determine baking time, safe doneness, pan fill limits, leavening changes or servings for a tiered cake.
Example results for original round pan diameter
These examples use New round pan diameter: 10; Original batter depth: 2; New batter depth: 2; Original servings: 12. They are reference calculations, not recommended settings.
Original round pan diameterRecipe volume multiplier
46.25
81.5625
160.390625
Cite this page
ToolOctopus. “Cake calculator.” Updated 2026-09-26. https://tooloctopus.com/cake-calculator.
Add an access date if your instructions require one.
Citation formatting uses citeproc-js by Frank Bennett and Citation Style Language styles. Licence and source code.
Find a tool
Search by task. Use ↓ and ↑ to choose, Enter to open.