Free grocery calculators

Eleven free tools for the grocery bill and the kitchen it fills, from the shelf to the year:

• The unit price calculator compares what products really cost per ounce, per 100 grams or per item, across pack sizes.
• The grocery budget calculator works out a household grocery budget from the USDA food plans.
• The grocery inflation calculator shows what groceries from any month since 2000 cost now, for the whole cart or one aisle.
• The bulk buy calculator shows whether the bigger pack is really cheaper once you count what gets thrown away.
• The warehouse club calculator shows whether a Costco, Sam's Club or BJ's membership pays for itself, and which level.
• The recipe cost calculator prices a recipe per serving from the packs you bought.
• The food waste calculator turns what you throw away into a yearly cost.
• The Julian date converter turns the day-of-year code printed on some packaging into a calendar date.
• The food storage time lookup gives the fridge and freezer times FoodSafety.gov publishes for meat, poultry, fish, eggs and leftovers.
• The defrost time calculator gives the USDA thawing times, in the refrigerator or in cold water.
• The portion planner turns a headcount into how much rice, pasta, meat or veg to buy, from the US reference amounts.

All of them run in your browser. What you type isn't sent to us or to anyone else, and it stays on this device, so your numbers are still there when you come back.