Serving Size Calculator
Calculate how much food you need for any number of guests — breakfast, lunch, dinner or buffet. Perfect for party planning, catering, and meal prep.
How to Calculate Food Quantities for Guests
Planning food for a group can be challenging. Our serving size calculator takes the guesswork out of meal planning by providing exact quantities for each food category based on the number of guests and meal type.
The calculator uses standard serving sizes per person, which vary based on the meal type:
- Breakfast: Lighter portions with protein, carbs, and fruit.
- Lunch: Medium portions, balanced between protein, veg, and carbs.
- Dinner: Larger portions, heavier on protein and vegetables.
- Buffet: Smaller portions of each item since guests take a variety of dishes.
- Kids Party: 50-70% of adult portions for children aged 4-10.
The calculator also includes appetizers, desserts, and drinks in its recommendations, giving you a complete shopping list for your event.
Why Use This Serving Size Calculator?
- Reduce food waste: Buy exactly what you need, no more, no less.
- Save money: Avoid overbuying expensive ingredients.
- Perfect portions: Ensure everyone gets enough to eat.
- Easy planning: Get a complete shopping list in seconds.
How Accurate Is This Calculator?
This calculator uses established catering industry standards for serving sizes. Results are based on average appetites and can be adjusted up or down based on your guests' preferences and the type of event.
Frequently Asked Questions
For a dinner party, plan for about 200-300g of protein, 150-200g of vegetables, and 100-150g of carbs per person. For a buffet, reduce portions by about 20% since guests often take smaller portions of multiple items.
For a buffet, calculate about 150-200g of protein, 100-150g of vegetables, and 80-120g of carbs per person. Also include 2-3 side dishes and at least one dessert option.
For 10 guests at dinner, you'll need approximately 2-3kg of meat or fish, 1.5-2kg of vegetables, 1-1.5kg of carbs (potatoes, rice, pasta), plus appetizers and desserts. This calculator gives you exact quantities for each food category.
Breakfast portions are typically smaller — about 100-150g of protein, 100-150g of carbs, and 80-120g of fruit per person. Dinner portions are larger — 200-300g of protein, 150-200g of vegetables, and 100-150g of carbs.
For children aged 4-10, plan for about 50-70% of adult portions. For teenagers, adult portions or slightly more. This calculator lets you enter the number of guests and automatically adjusts for age if you use the 'kids' option.
If your guests are big eaters, multiply the recommended quantities by 1.25 to 1.5. The calculator gives baseline recommendations which you can adjust based on your knowledge of your guests.