Cake pan conversion calculator
Open Cake pan conversion calculator on Happytails.ai. This view has the same page content and links, with explicit tool capabilities. Read the processing notes before using a tool.
Tool capabilities
{
"id": "cake-pan-conversion-calculator",
"category": "calculators",
"built": true,
"requirements": "Straight-sided round and rectangular pans, up to 100 source or target pans. Sloped tins and baking-time predictions are not included.",
"implementation": {
"fields": [
{
"key": "sourceShape",
"label": "Original pan shape",
"value": "Round",
"type": "select",
"values": [
"Round",
"Rectangle"
]
},
{
"key": "sourceDiameter",
"label": "Original internal diameter",
"value": 20,
"type": "number",
"min": 0,
"max": 100000000,
"step": "any",
"showWhen": {
"sourceShape": [
"Round"
]
}
},
{
"key": "sourceLength",
"label": "Original internal length",
"value": 20,
"type": "number",
"min": 0,
"max": 100000000,
"step": "any",
"showWhen": {
"sourceShape": [
"Rectangle"
]
}
},
{
"key": "sourceWidth",
"label": "Original internal width",
"value": 20,
"type": "number",
"min": 0,
"max": 100000000,
"step": "any",
"showWhen": {
"sourceShape": [
"Rectangle"
]
}
},
{
"key": "sourceDepth",
"label": "Original batter depth",
"value": 5,
"type": "number",
"min": 0,
"max": 100000000,
"step": "any"
},
{
"key": "sourceCount",
"label": "Original pan count",
"value": 1,
"type": "number",
"min": 1,
"max": 100,
"step": 1
},
{
"key": "targetShape",
"label": "Target pan shape",
"value": "Round",
"type": "select",
"values": [
"Round",
"Rectangle"
]
},
{
"key": "targetDiameter",
"label": "Target internal diameter",
"value": 24,
"type": "number",
"min": 0,
"max": 100000000,
"step": "any",
"showWhen": {
"targetShape": [
"Round"
]
}
},
{
"key": "targetLength",
"label": "Target internal length",
"value": 30,
"type": "number",
"min": 0,
"max": 100000000,
"step": "any",
"showWhen": {
"targetShape": [
"Rectangle"
]
}
},
{
"key": "targetWidth",
"label": "Target internal width",
"value": 20,
"type": "number",
"min": 0,
"max": 100000000,
"step": "any",
"showWhen": {
"targetShape": [
"Rectangle"
]
}
},
{
"key": "targetDepth",
"label": "Target batter depth",
"value": 5,
"type": "number",
"min": 0,
"max": 100000000,
"step": "any"
},
{
"key": "targetCount",
"label": "Target pan count",
"value": 1,
"type": "number",
"min": 1,
"max": 100,
"step": 1
},
{
"key": "unit",
"label": "Dimension unit",
"value": "cm",
"type": "select",
"values": [
"mm",
"cm",
"in"
]
},
{
"key": "batterMass",
"label": "Original total batter mass",
"value": 1000,
"type": "number",
"min": 0,
"max": 100000000,
"step": "any"
},
{
"key": "massUnit",
"label": "Mass unit",
"value": "g",
"type": "select",
"values": [
"g",
"kg",
"oz",
"lb"
]
}
],
"input": false,
"live": true,
"presentation": "metrics",
"note": "Scale all ingredients by the ratio of intended filled volumes. Use internal straight-sided dimensions and batter depth, not rim height. Baking time is not predicted. Calculated on your device. Changing units keeps the entered numbers.",
"experience": {
"automatic": true,
"single": false,
"inputMaxLength": 1000000,
"inputMode": "text",
"label": "Your text",
"placeholder": "Type or paste your input…",
"help": "Change the input or settings to update your result. Results update as you type. Up to 1,000,000 characters.",
"helpParts": [
"Change the input or settings to update your result.",
"Results update as you type.",
"Up to 1,000,000 characters."
],
"action": null
},
"mode": "automatic",
"interactive": false
},
"execution": "Browser interface",
"api": null,
"browser_agent": {
"supported": true,
"name": "run_current_tool",
"discovery": "WebMCP on the human page in a supporting browser",
"verification": "See audit/API-AUDIT.md; availability is not verification"
}
}Page guide
Scale batter between round and rectangular pans using internal dimensions, fill depth and pan count.
How to use Cake pan conversion calculator
- Enter the measurements and assumptions for this recipe or plan.
- Review the calculated quantities and their stated basis.
- Download the report and verify it against your measured result.
Useful next steps
Compare filled volumes
Use intended batter depth rather than total pan height. At the same depth, moving from a 20 cm round tin to a 24 cm round tin multiplies batter by 1.44.
Scale every ingredient consistently
The multiplier applies to the complete original recipe. Different depths and numbers of pans are included. Baking time, rise and pan overflow clearance still depend on the recipe.
Save the result
Download CSV and a text or JSON report with the calculation and its assumptions. Processing stays on your device. Check measurements and selected units before using the result.