Calculate exactly how many vegetables and trimmings to buy for your Christmas feast. No more guesswork, just the right amount for everyone.
6
Based on children eating roughly half an adult portion.
Roast Potatoes
1,120g
Approx. 2-3 medium potatoes
Mashed Potatoes
1,000g
Approx. 1-2 large potatoes
Carrots
400g
Approx. 1 medium carrot
Parsnips
400g
Approx. 1 medium parsnip
Brussels Sprouts
450g
Approx. 6-8 sprouts
Peas
400g
Approx. a small handful
Stuffing
500g
Approx. 2-3 stuffing balls
Gravy (ml)
620ml
Approx. a small ladleful
Cranberry Sauce
200g
Approx. 1-2 tablespoons
Bread Sauce
250g
Approx. 2-3 tablespoons
Pigs in Blankets
16
Approx. 3 sausages
Yorkshire Puddings
10
Approx. 2 puddings
Planning a Christmas dinner can be a delightful but daunting task. This Calculator Site tool helps you determine the right amount of food to prepare, ensuring everyone is satisfied and minimising food waste. Our calculations are based on standard UK portion sizes, with a generous festive appetite in mind. For the main event, check our Bird Cooking Time Calculator.
We assume that a child under 12 eats approximately half the portion of an adult. Simply enter the number of adults and children attending your dinner, and the calculator will provide a shopping list with recommended weights and quantities for all the essential trimmings. This helps you buy just what you need.
Pro Tip: Prep in Advance!
Most vegetables like potatoes, carrots, and parsnips can be peeled and chopped the day before. To prevent them from browning, keep them in a bowl of cold water in the fridge. Brussels sprouts can also be prepped and stored in an airtight container, saving you valuable time on Christmas Day.
Getting your quantities and timings right is key to a stress-free Christmas dinner. Here are some useful figures and guides. For more general conversions, see our Portion Size Calculator.
225g
Roast potatoes per adult
6-8
Brussels sprouts per person
25-30
Mins to cook pigs in blankets
General cooking times vary, but aim for 50-60 mins for roast potatoes (parboil first!), 30-40 mins for parsnips, and 20-25 mins for Yorkshire puddings in a very hot oven.
How to use this Calculator Site tool
Simply enter the number of adults and children in the fields at the top of the page. The calculator will instantly generate a shopping list with the total weight or quantity needed for every item, from potatoes to pigs in blankets. Use this list to plan your festive food shop with confidence.
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