How much buttercream
Buttercream can be applied in different ways - from a thin crumb coat t a thick top coat with borders and decorations. Cupcake decorating can range from a thin coat as a basis for a fondant top to a beautiful large swirl. The amount of buttercream required for a cake or cupcake can vary considerably depending on the project. Please find below a guideline on how much estimated buttercream is required based on the shape and size of the cake.
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| Cake Shape | Size (inches) | Size (cm) | Buttercream Icing |
Rounds 3" high
|
6" | 15.24cm | 400g |
| 8" | 20.32cm | 600g | |
| 10" | 25.4cm | 860g | |
| 12" | 30.48cm | 1100g | |
| 14" | 35.56cm | 1500g | |
| 16" | 40.64cm | 1900g | |
Rounds 4" high
|
6" | 15.24cm | 535g |
| 8" | 20.32cm | 800g | |
| 10" | 25.4cm | 1150g | |
| 12" | 30.48cm | 1500g | |
| 14" | 35.56cm | 2000g | |
| 16" | 40.64cm | 2550g | |
Squares 3" high
|
6" | 15.24cm | 535g |
| 8" | 20.32cm | 800g | |
| 10" | 25.4cm | 1150g | |
| 12" | 30.48cm | 1500g | |
| 14" | 35.56cm | 2000g | |
| 16" | 40.64cm | 2550g | |
Squares 4" high
|
6" | 15.24cm | 725g |
| 8" | 20.32cm | 1100g | |
| 10" | 25.4cm | 1550g | |
| 12" | 30.48cm | 2000g | |
| 14" | 35.56cm | 2670g | |
| 16" | 40.64cm | 3400g | |
| Cupcakes | Spreading on top | 30g per cupcake | |
| Swirl on top | 90g per cupcake | ||