How to use this calculator
Enter your normal weekly grocery spending, household size, weekly home-cooked meals, and estimated food waste. The calculator converts weekly spending into a monthly and annual grocery plan.
The waste estimate helps identify how much money may be lost through expired or unused food.
What the result means
The result shows expected monthly grocery spending. A lower waste rate and stable cost per person usually mean the grocery plan is more controlled.
Monthly grocery cost = Weekly grocery spending × 4.33; Waste cost = Monthly cost × Waste %
Food prices vary by region, diet, and inflation. Use your actual receipts for the most reliable estimate.