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 9,414 kJ (2,250 Cal) a day for an adult, 6,694 kJ (1,600 Cal) for a child and 4,602 kJ (1,100 Cal) 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.
- Under the joint Australia New Zealand code, labels must declare wheat, fish, shellfish, egg, milk, lupin, peanut, soy, sesame, named tree nuts, gluten cereals and added sulphites.2
- Allergens must be in bold in the ingredient list, plus a separate bold summary starting with 'Contains' near the ingredients.2
- 'May contain' statements are voluntary and not regulated by the Food Standards Code.2
Young children
- Avoid giving honey to babies under 12 months because it can cause infant botulism.3
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 1,318 kJ (315 Cal) a tin.
Sources
- SupKit planning rules (SupScore 2026.5), SupKit. SupKit's own planning data.
- Allergen labelling for consumers, Food Standards Australia New Zealand. Checked 28 October 2026.
- Botulism, Health New Zealand | Te Whatu Ora. Checked 28 October 2026.
We summarise official guidance in our own words. Always follow advice from your local authorities.
