PartyCalcs.uk
Buffet Calculator — Balanced Spread
Plan a balanced buffet spread with the right portions per guest.
How We Calculate This
This calculator estimates total buffet food and per-dish quantities using UK catering guidelines.
Formula
- Savoury food = 225g per person (midpoint of 200-250g guideline)
- Sweet food = 100g per person
- Total food = effective adults x 325g
- Per dish = total food / number of dishes
- Sandwiches = effective adults x 3.5 (assumes finger sandwiches are one of several buffet items; allow 4-5 each if sandwiches are the main item)
- Children = 60% of adult portions
Frequently Asked Questions
Plan 200-250g of savoury food plus 100g of sweet items per adult, giving roughly 300-350g total per person. Children eat about 60% of adult portions. For longer events (4+ hours), plan slightly more as people graze. Include a mix of protein, carbs, and salads for variety.
Aim for 5-7 dishes for variety: 2 protein options (meat + vegetarian), 2-3 salads/sides, bread/sandwiches, and 1-2 desserts. Too few dishes looks sparse; too many increases waste. Label everything including allergens.
Crowd-pleasers: finger sandwiches, sausage rolls, quiche, pasta salad, coleslaw, green salad, mini wraps, crisps with dips, fruit platter, and brownies or cake. Choose dishes that hold well at room temperature for 2-3 hours.
Make 10-15% more than calculated. Refill dishes before they are empty - a half-empty dish looks depleted. Place popular items at the back so people take less. Have bread and simple fillers available as backup.
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Last updated: February 2026
All calculations are estimates. Adjust quantities based on your guests and event type.