Meal Prep Macro Calculator
Calculate macros for weekly meal prep containers from target daily intake and meal count. Enter values for instant results with step-by-step formulas.
Reviewed by Rahul Singh, Health & Wellness Specialist
Formula
Container Macros = (Daily Target - Snack Macros) / Meals Per Day; Total = Container x Prep Days x Meals
Daily macro targets are first reduced by snack macros, then divided equally among prepped meals. The total ingredient quantities are calculated by multiplying per-container amounts by the number of containers (meals per day times prep days). Raw ingredient quantities account for cooking weight changes.
Worked Examples
Example 1: Standard 5-Day Prep with 4 Meals
Problem:Daily targets: 2,200 kcal, 160g protein, 65g fat. Prep 5 days of 4 meals plus 1 snack (200 kcal) per day.
Solution:Daily carbs: (2,200 - 640 - 585) / 4 = 244g\nMeal calories: (2,200 - 200) / 4 = 500 kcal\nSnack macros: ~16g P, 5g F, 27g C\nPer container: ~36g protein, 15g fat, 54g carbs\nTotal containers: 4 x 5 = 20 containers\nWeekly totals: 720g protein, 1,220g carbs, 300g fat\nGrocery: ~64 oz chicken breast, ~6 cups dry rice
Result:20 containers at 500 kcal each | 36g protein, 15g fat, 54g carbs per container
Example 2: 3-Day Prep for Cutting Phase
Problem:Daily targets: 1,800 kcal, 180g protein, 50g fat. Prep 3 days of 5 meals with no snacks.
Solution:Daily carbs: (1,800 - 720 - 450) / 4 = 158g\nPer container: 360 kcal, 36g protein, 10g fat, 32g carbs\nTotal containers: 5 x 3 = 15\nWeekly totals (3 days): 540g protein, 474g carbs, 150g fat\nGrocery: ~48 oz chicken breast, ~3.5 cups dry rice\nSmaller portions with higher protein density
Result:15 containers at 360 kcal each | 36g protein, 10g fat, 32g carbs per container
Frequently Asked Questions
How do you calculate macros for meal prep containers?
To calculate macros for each meal prep container, start with your daily macro targets and subtract any snack macros you plan to eat outside of prepped meals. Then divide the remaining macros equally among your planned meals. For example, if your daily target is 2,200 calories with 160g protein, 65g fat, and 240g carbs, and you have one 200-calorie snack, each of your four prepped meals would contain approximately 500 calories, 37g protein, 15g fat, and 55g carbs. This ensures each container provides balanced nutrition and your daily totals are met consistently without guesswork.
How many days in advance can you safely meal prep?
Most cooked meal prep containers can be safely stored in the refrigerator for 3 to 5 days when stored properly in airtight containers at or below 40 degrees Fahrenheit. For longer prep periods, prepare meals for the first 3 days and freeze the remaining containers for days 4 through 7. Frozen meal prep containers maintain quality for up to 3 months. Foods like cooked chicken, rice, and roasted vegetables refrigerate well, while foods with high water content like raw salads and cut avocado deteriorate quickly and should be prepped separately. Always let hot food cool to room temperature before sealing containers to prevent bacterial growth from trapped moisture.
What are the best protein sources for meal prep?
The best meal prep protein sources are those that reheat well and maintain texture over several days. Chicken breast and thigh are the most popular choices, providing 26 to 28 grams of protein per 4-ounce serving. Ground turkey and lean ground beef cook quickly and work in many recipes. Baked salmon and tilapia are excellent for fish-based preps, though they should be consumed within 3 days. Hard-boiled eggs provide portable protein at 6 grams each. For plant-based options, tofu, tempeh, lentils, and chickpeas all hold up well during storage. Slow-cooker pulled chicken and shredded beef are particularly convenient because they stay moist when reheated.
How do you keep meal prep food from getting soggy or dry?
Preventing texture degradation requires proper storage techniques and food selection. Store sauces and dressings separately in small containers to add just before eating. Keep wet and dry ingredients in separate compartments of divided containers. Slightly undercook vegetables during prep because they will continue to soften during storage and reheating. Add a tablespoon of water or broth to rice and grain containers before microwaving to restore moisture. For proteins, marinating before cooking and avoiding overcooking preserves moisture throughout the week. Pat excess moisture from cooked vegetables before storing. Use glass containers rather than plastic, as they maintain temperature better during reheating and prevent warping.
References
Reviewed by Rahul Singh, Health & Wellness Specialist · Editorial policy