Christmas Cake Calculator
Calculate dried fruit, butter, flour, and alcohol quantities for Christmas cake by tin size.
How We Calculate This
This calculator scales a traditional British Christmas cake recipe based on tin area. The base recipe is for a 20cm round tin and uses the classic rich fruit cake ratio with equal weights of currants, sultanas, and raisins.
How Scaling Works
- The tin area is calculated (circular or square) and compared to the 20cm round base
- All ingredients are multiplied by the area ratio to maintain the correct batter depth
- Baking time is adjusted based on the square root of the ratio, as larger cakes take proportionally less extra time
Base Recipe (20cm Round)
- 300g each currants, sultanas, raisins
- 175g butter, 175g dark brown sugar, 175g plain flour
- 3 large eggs, 50ml brandy
- 75g mixed peel, 75g glace cherries, 50g blanched almonds
Frequently Asked Questions
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Last updated: February 2026
All calculations are based on standard ratios and conversions. Results may vary with specific ingredients, equipment, and conditions.