Free Calculator

Meal Prep Calculator

Divide your total recipe nutrition into equal containers — get exact per-serving calories, protein, carbs, and fat instantly.

Per Container

kcal per container
Calories per Serving
Divided equally across containers
Protein
g/container
Carbs
g/container
Fat
g/container
Containers
servings
Protein per Container
grams
Weight per Container
grams

Tip: Label your containers with these macros so you know exactly what you're eating each day.

Why Meal Prep Works

Meal prep removes decision fatigue — the number one reason people fall off their nutrition plan. When your meals are pre-portioned and ready, there's no temptation to grab fast food or eyeball portions.

The benefits compound over time: consistent calorie and macro intake, significant time savings (cook once, eat all week), and lower food costs from buying in bulk and reducing waste.

Research backs it up: A 2022 study in the International Journal of Behavioral Nutrition found that people who meal prep eat 25% more fruits and vegetables and are 43% more likely to stay within their calorie targets compared to those who cook each meal individually.

Meal Prep Best Practices

These tips will help your meal prep last longer, taste better, and actually get eaten:

  • Prep protein in bulk. Cook 2–3 types of protein (chicken, ground turkey, eggs) and mix throughout the week for variety.
  • Separate wet and dry ingredients. Keep sauces, dressings, and high-moisture items in separate containers to prevent sogginess.
  • Label containers with macros. Write the date, meal name, and macros directly on the lid or use masking tape labels.
  • Refrigerated meals last 4–5 days. For longer storage, freeze portions and thaw overnight in the fridge. Most prepped meals freeze well for 2–3 months.
  • Invest in quality containers. Glass containers with snap-lock lids are microwave-safe, don't stain, and seal better than cheap plastic.
  • Cook starches separately. Rice, pasta, and potatoes reheat better when stored apart from proteins and vegetables.

Container Size Guide

Choosing the right container size depends on your calorie target and how calorie-dense your meals are. Here's a practical reference:

Container SizeBest ForTypical Calories
500 ml (2 cups)Snacks, side dishes, light meals200–400 kcal
750 ml (3 cups)Standard meals, lunch portions400–600 kcal
1000 ml (4 cups)Large meals, high-calorie bulking600–900 kcal
1500 ml (6 cups)Salads, high-volume low-calorie meals300–600 kcal
Log Your Meal Prep in MacroLog
Snap a photo of your container and MacroLog logs the macros automatically — no manual entry needed.