Baking pan converter
Got a recipe for one pan but a different one in the cupboard? Pick both pans and get the factor to multiply every ingredient by, straight away. Worked out from the volume ratio, not from rules of thumb.
Optional: enter an amount and it is converted right away.
How does converting baking pans work?
What matters is not the diameter but the volume of the pan. A round pan grows with the square of its diameter: a 28 cm springform holds not a little more than a 20 cm one, but almost twice as much.
The factor is therefore the ratio of the two volumes. Multiply every ingredient by it and the recipe keeps its proportions and works just as well in the new pan.
For rectangular pans the volume is length times width times height. When switching between round and rectangular pans the converter also works from the volume, and the value is a very good approximation.
One more note: the factor adjusts the ingredients, not the baking time. If the batter sits higher in the new pan it needs longer, if it sits flatter it needs less. Rely on the skewer test rather than the clock alone.
Springform conversion table, relative to 26 cm
A recipe for a 26 cm springform, converted to common diameters. For any other starting pan, use the converter above.
| Springform | Factor |
|---|---|
| 18 cm | × 0.48 |
| 20 cm | × 0.59 |
| 22 cm | × 0.72 |
| 24 cm | × 0.85 |
| 26 cm | × 1 |
| 28 cm | × 1.16 |
| 30 cm | × 1.33 |
Frequently asked questions
How do I convert a springform to another size?
You need the ratio of the volumes. For round pans of the same build it is the new diameter divided by the old one, squared. From 20 to 26 cm that gives a factor of 1.69, for example. The converter above does the maths for you.
Do I need to adjust the baking time too?
Usually yes. The factor applies to the ingredients. If the batter sits higher or flatter in the new pan, the baking time changes accordingly. Check with the skewer test.
Can I convert from a round to a rectangular pan?
Yes. The converter compares the volumes of both pans, across different builds too. Because rectangular and round pans are filled differently, the value is then a good approximation rather than an exact size.
Why can I not just double the diameter?
Because area grows with the square. A pan twice as wide holds four times as much. Only the volume ratio gives the right factor.
Does the app do this for whole recipes?
Yes. In Happi Happi you save your pan with its dimensions and simply pick a different one when scaling, including from a springform to a loaf pan. Every amount in the recipe scales by volume automatically. This converter is a small taste of that.
Does Happi Happi convert between different pan types too, like springform to loaf pan?
Yes. The app asks for the dimensions of each pan and compares them by volume, including height and typical fill level. That lets it convert a recipe from a round to a rectangular pan as well, automatically when you switch the pan.
Convert whole recipes automatically
In Happi Happi you set the pan once and scale any recipe with a single tap, by size or by servings. Free, ad-free, no data selling.