Springform 18 cm / 7 in vs Springform 20 cm / 8 in
| Springform 18 cm / 7 in | Springform 20 cm / 8 in | |
|---|---|---|
| Size | 18 cm across | 20 cm across |
| Base area | 254.5 cm² | 314.2 cm² |
| Usual depth | 7 cm | 7 cm |
| Holds | 1.65 L | 2.04 L |
Can you swap them?
Scale the mixture, or accept a flatter cake. Springform 20 cm / 8 in has 23.5% more area, so a Springform 18 cm / 7 in mixture poured straight in sits 81% as deep. It still bakes, and it browns more at the edges for being shallower. Multiplying by 1.23 restores the depth the recipe was written for.
Nothing standard sits between these two, so this is the smallest change available in this shape.
Scaling the recipe
| Recipe written for | Baked in | Multiply by | Or leave it and get |
|---|---|---|---|
| Springform 18 cm / 7 in | Springform 20 cm / 8 in | 1.23 | 81% of the depth |
| Springform 20 cm / 8 in | Springform 18 cm / 7 in | 0.81 | 123% of the depth |
Multiply every ingredient, including the eggs — round to the nearest half egg and adjust the liquid rather than rounding a whole one up.
Baking time
A mixture 81% as deep is done earlier, not cooler. Leave the temperature alone, start testing at about 81% of the stated time, and let the skewer decide. Why depth sets the time and diameter barely does →
Frequently asked questions
Can I use a Springform 20 cm / 8 in instead of a Springform 18 cm / 7 in?
Yes, with the mixture multiplied by 1.23. Springform 20 cm / 8 in has 314.2 cm² of base against 254.5 cm², so an unscaled Springform 18 cm / 7 in recipe sits 81% as deep and bakes faster.
What is the difference between a Springform 18 cm / 7 in and a Springform 20 cm / 8 in?
Springform 18 cm / 7 in has a base area of 254.5 cm² and Springform 20 cm / 8 in has 314.2 cm² — Springform 20 cm / 8 in is 23.5% larger. At their usual depths they hold 1.65 L and 2.04 L.
Do I need to change the baking time between a Springform 18 cm / 7 in and a Springform 20 cm / 8 in?
Yes. Moving a Springform 18 cm / 7 in mixture into Springform 20 cm / 8 in makes it 81% as deep, so start checking at about 81% of the stated time. Depth drives baking time far more than tin diameter does.
Related comparisons
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- Loaf 23 × 13 cm / 9 × 5 in vs Springform 20 cm / 8 in
- Springform 20 cm / 8 in vs Springform 23 cm / 9 in
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