Picnic Food & Drink Calculator
Packing too little food and drink can cut a picnic short, while packing too much means carrying leftovers home. Enter your group size and how long you'll be out for below to get a quick estimate of what to bring.
Work out food and drink for your picnic
Enter your group size and how long you'll be out for.
For 4 adults and 2 children over 3 hours, pack approximately:
1.50kg of food
Plus 9.0 litres of water or soft drinks between you — more on a hot day, and remember to pack extra for anyone who's active (games, walking) rather than just sitting on the rug.
Recommended products
A few well-reviewed picnic and outdoor dining essentials.
- Wicker
- 4 People
£62.99
Pros
- Large insulated cooler compartment keeps food and drink cold
- Includes waterproof blanket and full cutlery service kit
- Sturdy woven willow construction with reinforced handles
Cons
- Bulkier to store than a fabric-only picnic bag
- Wicker
- 4 People
£96.80
Pros
- Double-lidded wicker hamper feels premium and gift-ready
- Comes fully equipped with cutlery, glasses and plates for 4
- Sturdy carry handles for transport to the park or beach
Cons
- Higher price point than basic fabric picnic bags
- Polyester
- 4 People
£8.39
Pros
- Waterproof backing keeps damp grass out
- Folds down small with a carry handle for easy transport
- Budget-friendly staple for family picnics
Cons
- Fabric top can feel thin compared with padded picnic blankets
Frequently asked questions
How much food should I pack per person for a picnic?
Around 300g of finger food per adult and 150g per child is a reasonable starting point for a few hours out, though it is always worth packing a little extra if you are including lighter snack foods like fruit or crisps.
How much water should I bring on a hot day?
The 0.5 litres per person per hour used here is a baseline for mild weather, so on a genuinely hot day, or if the group will be active with games or walking, it is sensible to pack noticeably more to avoid running short.
Do children need as much food and drink as adults?
Generally children eat and drink somewhat less than adults, which is why this calculator uses roughly half the adult food amount per child, though appetite varies a lot by age so treat it as a guide rather than a strict rule.
What is the best way to keep picnic food fresh in the UK summer?
A well-packed cool bag with ice packs makes the biggest difference, especially for anything containing mayonnaise, dairy or meat, since these can spoil quickly if left in direct sun for more than an hour or two.
How this calculator works
The calculator begins by asking for the number of people attending your picnic. This is the primary driver for calculating food quantities; we assume an average adult consumption of 150g of dry sandwich filling, 300ml of drink and a total of 750g of food per person. It then requests the duration of the event in hours, which influences the volume of drinks needed – we’ve factored in approximately 500ml of liquid consumed per hour per person as a starting point.
Finally, you specify whether you're planning on grilling or just providing cold food. Grilling significantly increases heat requirements, though this calculator doesn't directly address energy consumption for the BBQ itself (that would require a separate tool). The results are then displayed in approximate quantities – these are guidelines and should be adjusted based on individual appetites and preferences.
UK Picnic Food Portion Sizes - A Practical Guide
- **Sandwiches:** A standard crustless white bread sandwich typically weighs around 80-120g. Consider fillings like cheddar, ham & pickle (approx. 100g), or smoked salmon with cream cheese (approx. 150g).
- **Salads:** Aim for approximately 150g of leafy green salad per person plus around 75g of chopped vegetables – tomatoes, cucumber, peppers are all popular choices.
- **Fruit:** A generous portion is roughly 200g of sliced fruit – berries, melon, or grapes work well. Factor in at least one piece per person.
- **Cheese & Crackers:** Roughly 100g of cheese and 50g of crackers is a good starting point. Cheddar, brie and stilton are all popular options.
- **Sweets:** A small box of shortbread or biscuits (around 75-100g) is typical for sharing. Consider fruit slices too – apples or pears.
- **Drinks:** Plan on roughly 750ml - 1 litre of drink per person, factoring in water, juice or soft drinks. Remember ice! A standard pack of ice cubes costs around £3-£5 at most supermarkets.
- **BBQ Sides (if grilling):** If you're cooking meat on a BBQ, consider adding potato salad (approx 200g) or coleslaw (approx 150g).
- **Utensils & Plates:** Don’t forget disposable plates, cutlery and napkins – allow for at least two per person.
- **Bug Spray:** A small can of insect repellent is a smart investment in the UK, especially near lakes or rivers. Prices typically range from £3-£7.
- **Sunscreen:** Protect your skin! Factor 50 sunscreen will cost approximately £5-£12.
Worked example: A Family Picnic
Let’s say you're planning a picnic for four people lasting three hours. You input these details into the calculator, and it suggests approximately 600g of sandwich filling (4 x 150g), 1500ml of drinks (4 x 375ml) and 1.5kg of total food. This would translate to roughly six large crustless sandwiches with fillings like ham & cheese, three generous salads, a selection of fruit (around 250g), and some biscuits for dessert – enough to satisfy a family’s appetites.
To provide a more realistic budget, let's consider the cost. Six decent sandwiches could be purchased for around £12 - £18 from supermarkets like Tesco or Sainsbury's. A pack of 1.5 litres of juice would likely cost approximately £3 - £4. Overall, this simple picnic could cost between £15-£22, providing a solid foundation for a family outing.
More questions answered
How does the calculator handle different dietary requirements?
The calculator provides basic portion sizes based on typical consumption. To cater to specific diets (vegan, gluten-free etc.), you'll need to adjust the quantities accordingly – ensuring ingredients meet those needs.
What if we’re having a picnic in very hot weather? Does this affect food quantity?
Hot weather increases thirst and can lead to higher appetites. Consider increasing drink quantities by 25-50% and potentially adding cooling foods like watermelon or cucumber to help regulate body temperature.
What if we’re only providing cold food – no BBQ?
The calculator assumes a mix of hot and cold food. If you're solely offering cold options, reduce the suggested quantities of sandwich filling by approximately 20-30% to account for less heat intake.
Can I use this calculator to plan a large event (e.g., a garden party)?
The calculator is designed for smaller groups. For larger events, you’ll need to multiply the results by the number of attendees – but always consider individual appetites and preferences.
What if I want to pack more substantial snacks?
Increase the amounts for items like cheese & crackers, fruit and sweets to suit your group's preferences. Don't be afraid to add extras! Just ensure you’re still planning for a reasonable amount overall.
How does this calculator account for children’s appetites?
Children typically eat smaller portions than adults. Reduce the suggested food quantities by approximately 50% for each child attending.
I've entered the wrong number of people – what happens?
The calculator will provide results based on the input you’ve given it. It is always best to double-check your figures before proceeding! You can easily change the numbers and recalculate.
Are there any specific food safety considerations I should be aware of?
Keep perishable foods refrigerated until shortly before serving. Use insulated bags or coolers to maintain cold temperatures, especially in warmer weather. Always wash fruits and vegetables thoroughly.
Where can I buy the ingredients suggested by this calculator?
You'll find most of these items at major supermarkets like Tesco, Sainsbury’s, Asda, Morrisons, and Waitrose. Amazon UK also offers a wide selection – browse our curated ranges for convenience! [Link to relevant Amazon UK search results]
What if I want to track the cost of my picnic supplies?
While this calculator doesn’t directly calculate costs, you can use the suggested quantities and approximate prices (as listed above) to create your own budget. Remember to factor in things like cutlery, napkins and ice.