Cake Pan Converter

Scale your baking recipe for any cake tin by comparing the circular volume of the pans.

Pan dimensions

Enter the diameter of your original pan and the pan you plan to use. The converter assumes consistent height and focuses on volume ratios.

How to Use This Converter

Provide the diameter of your current pan and the diameter of the new pan. The output shows the volume for each pan plus a recipe adjustment factor to multiply your batter ingredients.

Methodology

This tool uses the geometry of a cylinder to compute volume from the diameter, assuming equivalent height. The ratio between volumes determines how much larger or smaller the recipe needs to be.

  • Start with reliable diameter measurements; even small differences affect the adjustment factor quadratically.
  • The tool assumes a constant cake depth; adjust manually if you plan to change height.
  • Results refresh whenever you click Calculate or change either input.
Always double-check with a test bake, especially when the new pan has non-standard surfaces or insulation properties.

Full original guide (expanded)

Data Source and Methodology

All calculations are based on standard geometric formulas for volume calculation of cylindrical shapes. See the Official a third-party calculator for more details.

The Formula Explained

The formula used for conversion is: \( V = \pi \times \left(\frac{d}{2}\right)^2 \times h \), where V is the volume, d is the diameter, and h is the height.

Glossary of Terms

  • Original Pan Diameter: Diameter of the pan you currently have.
  • New Pan Diameter: Diameter of the pan you want to use.
  • Recipe Adjustment Factor: The factor by which you need to multiply the original recipe to fit the new pan size.

How It Works: A Step-by-Step Example

To adjust a recipe from a 20 cm pan to a 25 cm pan, calculate the volume of each and then divide the new pan volume by the original. This gives you the Recipe Adjustment Factor.

Frequently Asked Questions (FAQ)

Why do I need to adjust my recipe?

Adjusting the recipe ensures that the cake cooks evenly without being undercooked or overcooked.

Can I use this for non-circular pans?

This calculator is designed for circular pans. For other shapes, you'll need to calculate the area separately.

What if my pan heights are different?

If the heights differ, you'll need to adjust the batter volume proportionally to avoid overflow or underfilling.

How precise are the calculations?

The calculations are based on standard volume formulas and should be accurate for practical baking purposes.

Is this tool free to use?

Yes, the Cake Pan Converter is completely free to use.

Formulas

Volume of a circular pan:

\[ V = \pi \times \left(\frac{d}{2}\right)^2 \times h \]

  • d: Diameter in centimeters.
  • h: Effective height (assumed constant for comparison).
  • The adjustment factor = Vnew / Voriginal.
Citations

Official a third-party calculator — a third-party calculator.com · Accessed 2026-01-19

https://www.a third-party calculator.com/food/cake-pans

Changelog

Version: 0.1.0-draft · 2026-01-19

  • Initial audit spec draft generated from HTML extraction (review required).
  • Verify formulas match the calculator engine and convert any text-only formulas to LaTeX.
  • Confirm sources are authoritative and relevant to the calculator methodology.
✓ Verified by Ugo Candido Last updated: 2026-01-19 Version 0.1.0-draft
Version 1.5.0