Scale a round cake recipe using the squared ratio of pan diameters. See worked 6-to-8-inch and 6-to-5-inch examples, then download an editable Calvance canvas.
Exported from Calvance using the template’s default 6-to-8-inch example. Ingredient amounts illustrate the calculation. After importing, edit the numbers in Calvance.
If your round cake pan differs from the recipe’s pan, you can scale ingredient amounts by the ratio of their base areas while keeping the same fill height. This template connects the original diameter, target diameter, and five ingredients on one canvas, using an illustrative Basque cheesecake recipe.
Changing the target diameter updates the scale factor and every ingredient. Replace the example with a recipe you have tested. The ingredient combination on this page has not been tested by baking it.
The default example scales a 6-inch recipe to an 8-inch pan. Both diameters must use the same unit and be greater than zero. Measure the actual inside diameters and keep the same fill height; do not rely only on nominal product sizes.
| Input | Default | What to enter |
|---|---|---|
| Original diameter | 6 | The original round pan’s inside diameter |
| Target diameter | 8 | The new pan’s inside diameter, in the same unit |
| Cream cheese | 350 g | Amount in the original recipe |
| Heavy cream | 180 g | Amount in the original recipe |
| Beaten whole egg | 150 g | Weight, not the number of eggs |
| Caster sugar | 80 g | Amount in the original recipe |
| Cornstarch | 10 g | Amount in the original recipe |
You can also enter both diameters in centimeters, such as 20 and 15. Do not mix inches and centimeters. Convert to one unit first, and update the canvas labels to match.
For a cylinder with the same fill height, volume is proportional to the square of its diameter:
For 6 to 8 inches, (8 ÷ 6)² = 16/9 ≈ 1.7778. Cream cheese becomes 350 × 16/9 ≈ 622.22 g, displayed as 622 g when rounded to whole grams.
Do not use 8 ÷ 6 alone as the ingredient multiplier: that gives only the diameter ratio. Later formulas reference the unrounded scale factor; its four-decimal display does not reduce calculation precision.
Keep the original diameter at 6 and change the target from 8 to 5. The factor changes from about 1.7778 to about 0.6944.
| Ingredient | Original 6-inch recipe | 8-inch pan | 5-inch pan |
|---|---|---|---|
| Cream cheese | 350 g | 622 g | 243 g |
| Heavy cream | 180 g | 320 g | 125 g |
| Beaten whole egg | 150 g | 267 g | 104 g |
| Caster sugar | 80 g | 142 g | 56 g |
| Cornstarch | 10 g | 18 g | 7 g |
Like the canvas, this table displays whole grams. The download starts with 6 to 8 inches. Set the target to 6 to return the factor to 1 and restore all five original amounts.
The canvas scales ingredient quantities. It does not calculate baking temperature, time, or doneness, and does not validate a recipe.
Yes. Enter 8 as the original diameter, 6 as the target, and replace the ingredient inputs with your original 8-inch recipe. The factor is 0.5625. Swapping only the diameters while keeping the sample’s 6-inch ingredient amounts gives a different calculation.
Yes. Edit the ingredient labels and original amounts. To add an ingredient, add a formula referencing the same scale factor. This file includes five example ingredients.
Ingredient results display whole grams, but calculations use the unrounded factor. Rounding the factor to 1.78 before multiplying introduces another rounding difference.
Import the template, keep the original canvas, and duplicate it to adjust the target size or ingredients. Each separate canvas uses one canvas from your allowance. See plans.
Estimate a perfect-bound book’s spine and full cover dimensions from page count, paper caliper and bleed. Compare changes and download a reusable Calvance canvas.
View template and method
Split a candle batch’s net fill weight into wax and fragrance oil. Compare two wax-based fragrance percentages without changing total fill.
View template and method
One ingredient price, three bakes. Change the butter price to update batch and per-serving costs.
View template and methodChoose a plan when you need more canvases, high-resolution image exports, or sync across devices.
