Calculator · US

How many cans, jars and packs?

Pick a food, your household and how long, and see how many cans, jars or packs you'd need.

By the SupKit teamUpdated

The short answer

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 cans, 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.

  • US law names nine major food allergens: milk, eggs, fish, crustacean shellfish, tree nuts, peanuts, wheat, soybeans and sesame (sesame added from 2023).2
  • Labels must name each major allergen's source, either in brackets in the ingredient list or in a 'Contains' statement next to it.2
  • 'May contain' warnings are voluntary in the US, so not every maker uses them and their absence is not a guarantee.3

Young children

  • The CDC lists whole or chopped nuts and seeds, and spoonfuls of nut butter, as choking hazards for young children.4
  • Do not give honey to children under 12 months; it can cause infant botulism.5
  • Avoid salty foods such as canned foods and processed meats for young children.5

Questions

How many cans of beans for 30 days?

For one adult eating nothing but baked beans, about 215 cans; as a quarter of a mixed diet, about 54. This uses SupKit's estimate of 315 calories a can.

Sources

  1. SupKit planning rules (SupScore 2026.5), SupKit. SupKit's own planning data.
  2. Food Allergies: What You Need to Know, U.S. Food and Drug Administration. Checked 28 October 2026.
  3. Have Food Allergies? Read the Label, U.S. Food and Drug Administration. Checked 28 October 2026.
  4. Choking Hazards | Infant and Toddler Nutrition, Centers for Disease Control and Prevention. Checked 28 October 2026.
  5. Foods and Drinks to Avoid or Limit | Infant and Toddler Nutrition, Centers for Disease Control and Prevention. Checked 28 October 2026.

We summarise official guidance in our own words. Always follow advice from your local authorities.

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