How many tins, jars and packs?
Pick a food, your household and how long, and see how many tins, jars or packs you'd need.
SupKit plans on 2,250 calories a day for an adult, 1,600 calories for a child and 1,100 calories for a toddler.1 Choose a food, who's at home and how many days, and the calculator turns energy into tins, jars or packs. SupKit estimate
How it works
Your household's daily energy comes from SupKit's figures for each age band, the same as the app. The calculator takes the share you choose and divides it by the energy in one pack, rounding up.
Energy per pack comes from SupKit's catalogue estimates. SupKit estimate
Allergies, dietary needs and children
Plan around everyone at home: allergies, intolerances and diets come first, and familiar food matters most for children. Recipes vary between brands, so always read the label of the product you buy.
- UK food law names 14 major allergens, including cereals containing gluten, milk, eggs, fish, peanuts, tree nuts, soya, sesame, celery, mustard and sulphites.2
- On pre-packed food in the UK, these allergens must be emphasised in the ingredients list, for example in bold.2
- 'May contain' warnings aren't a legal requirement, so a missing warning doesn't guarantee a food is free of an allergen.2
Young children
Questions
How many tins of beans for 30 days?
For one adult eating nothing but baked beans, about 215 tins; as a quarter of a mixed diet, about 54. This uses SupKit's estimate of 315 calories a tin.
Sources
- SupKit planning rules (SupScore 2026.5), SupKit. SupKit's own planning data.
- Food allergy and intolerance advice for consumers, Food Standards Agency (GOV.UK). Checked 28 October 2026. Contains public sector information licensed under the Open Government Licence v3.0.
- Foods to avoid giving babies and young children, NHS. Checked 28 October 2026.
We summarise official guidance in our own words. Always follow advice from your local authorities.
