NikkiFlower tools
Cake Size & Weight Calculator | Calculate Cake KG by Guests
Tell us the guest count and the occasion — we'll work out the size, the tier stack, and how to cut it so nobody's left without a slice.
Enter a guest count of at least 1.
How generous should each slice be?
Just a nudge — it suggests a portion size above, you can still override it.
Your cake recommendation
Based on your guest count and preferences
1 kg cake serves how many people?
About 10 guests at a standard 100g slice, 13 at a light 75g bite, or 8 if you prefer a generous 125g portion.
How much cake for 10 people?
Plan 1 kg for standard slices. Choose 0.5–1 kg for tea-time bites, or 1.5 kg when slices should be large. Cakes here are ordered in half-kg steps.
How do I calculate cake KG by guests?
Guests × portion grams ÷ 1000, then round to the nearest 0.5 kg. Use the calculator above to also get tier sizes and a cutting guide.
Does a square cake serve more?
Yes — a square cake of the same size gives about 30% more servings than a round cake.
