Lista compras semana
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
Formula
kcal × dias / 1000
About this calculator
The 'Grocery Shopping List' calculator helps plan weekly purchases based on daily calorie consumption. It estimates the amount of food needed for the chosen period using the formula: daily calories × days ÷ 1000. This is useful to avoid waste and ensure nutritional needs are met.
The formula works by multiplying your or your family's daily calorie intake by the number of days in the period (e.g., 7 days). Dividing by 1000 converts this into kilograms of food, assuming 1kg ≈ 1,000 kcal. It's a practical approximation, though actual needs vary by food type's caloric density.
Use this calculation when planning weekly or multi-day grocery shopping, especially if you're on a calorie-controlled diet or trying to reduce costs. It's ideal for families aiming to optimize fridge usage and avoid repeated trips. However, adjust for dietary preferences, physical activity levels, and meal variations.
Note: this is a general estimate and may not precisely reflect needs for all food categories (proteins, carbs, veggies). For specific diets (vegetarian, low-carb), consult a nutritionist to refine the plan.
Frequently asked questions
How does the calculator use calories to estimate groceries?
It multiplies daily calories by days and divides by 1000, assuming 1kg of food equals approximately 1,000 kcal.
Is the result accurate for all diet types?
It's a general estimate. Diets high in protein or low in carbs may need manual adjustments.
Can I use it for less than a week?
Yes, adjust the days field for periods like 3 or 5 days.
Do I need to know my exact daily calorie intake?
Not required. Use a common average (1,800-2,500 kcal/day) if you're unsure.