Meal Prep Calculator

Nutritional Economics & Batch Culinary Metrology

Meal prepping optimizes both household microeconomics and macronutrient intake:

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• Cost per Meal & Savings Formulas**:

Cost per Meal = Weekly Grocery Prep CostMeals Prepped per Week

Weekly Savings = (Meals × P_takeout) - Grocery Prep Cost

Annual Savings = Weekly Savings × 52

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• Effective Kitchen Labor Hourly Wage Formula**:

Effective Hourly Prep Wage = Weekly Financial SavingsWeekly Prep Time (Hours)

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• The 10-Year Compound Investment Formula (8\% Return)**:

FV = Annual Savings × [ ^10 - 1r ]

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• Standard Meal Prep Benchmarks**:

• 5 Lunches (25 groc, 1 hr prep): 5.00 / meal | Save 2,860 / yr

• 10 Meals (45 groc, 2 hrs prep): 4.50 / meal | Save 5,980 / yr

• 14 Fitness Meals (80 groc, 3 hrs): 5.71 / meal | Save 7,488 / yr

• Couple 20 Meals (100 groc, 3.5 hrs): 5.00 / meal | Save 11,440 / yr

How to Use This Calculator

Enter your Number of Prepped Meals (per Week) (e.g. 10 in meals/wk), Total Weekly Grocery Cost for Prep (e.g. 45 in /week), Average Restaurant / Takeout Price per Meal (e.g. 16 in /meal), Weekly Batch Cooking & Packing Time (e.g. 2.0 in hours/wk), and Meal Prep Lifestyle Benchmark — choose from Custom Meal Prep Routine, 10 Workday Meals (5 lunches + 5 dinners, 45 groceries, 2 hrs prep) → 4.50/meal | Save 5,980/yr (57.50/hr prep wage), 5 Workday Lunches Only (25 groceries, 1 hr prep) → 5.00/meal | Save 2,860/yr (55.00/hr prep wage). Results update instantly as you type — adjust any value to compare scenarios.

The Formula

Formula Reference: Meal Prep Calculator

Input variables:

mealsPreppedPerWeekInput — Number of Prepped Meals (per Week)

weeklyGroceryPrepCostDollars — Total Weekly Grocery Cost for Prep

avgTakeoutMealPriceDollars — Average Restaurant / Takeout Price per Meal

prepTimeHoursPerWeekInput — Weekly Batch Cooking & Packing Time

Computed outputs:

annualSavingsDollars — Total Annual Savings vs Dining Out

monthlySavingsDollars — Monthly Financial Savings

costPerPreppedMealDollars — Cost per Prepped Meal

effectiveHourlyPrepWageDollars — Effective Hourly Wage Earned Prepping

tenYearInvestedSavingsDollars — 10-Year Invested Wealth (8% S&P 500)

Mathematical relationships extracted from calculation logic:

costPerMeal = groceries / meals

weeklyRestaurantSpend = meals * takeoutP

weeklySavings = weeklyRestaurantSpend - groceries

annualSavings = weeklySavings * 52.0

monthlySavings = annualSavings / 12.0

hourlyPrepWage = weeklySavings / hours

fv10 = annualSavings * ((Math.pow(1 + r, 10) - 1) / r)

Reference constants:

r = 0.08

Standard: Published population-average reference data (CDC, USDA, DOE)

Worked Example

A professional preparing 10 weekday meals spending 45 on groceries and 2 hours on Sunday discovers they save 5,980 per year, earning an effective 57.50/hour for their kitchen time while building an 86,630 10-year investment fund.

Understanding Your Result

This calculation gives a precise result based on the inputs you provided. For practical decisions, consider whether the result changes meaningfully with slight variations in your inputs — if a 5–10% change in input causes a significant output change, gather more precise input data before deciding. Use this tool to quickly compare multiple scenarios side by side.