How to Calculate Your Meal Prep Container Costs
Setting up a meal prep station means investing in containers that work for your cooking style, portion sizes, and storage space. The total cost depends on three variables: the sizes you need, how many of each, and the material — glass or plastic.
Container Sizes and Their Best Uses
Small containers (1–2 cup capacity) are ideal for snacks, dips, sauces, dressings, or single-serving sides like chopped fruit or nuts. They typically cost $2–$6 each for plastic and $4–$10 each for glass.
Medium containers (3–5 cup capacity) handle a standard lunch or dinner portion — a salad, a grain bowl, or a protein with one side. Expect to pay $4–$9 for plastic and $8–$16 for glass per unit.
Large containers (6+ cup capacity) are used for batch-cooked grains, soups, casseroles, or full family-sized meals. Quality large containers run $6–$12 for plastic and $12–$20 for glass.
Glass vs. Plastic: Which Is Worth It?
Plastic containers have a lower upfront cost and are lighter, making them easy to transport. However, they can stain, absorb odors, and may need replacing every 1–2 years. Glass containers cost roughly 2–3x more upfront but are non-porous (no staining or odor retention), oven-safe for reheating without transferring to another dish, and can last 5–10 years with proper care. For frequent meal preppers who reheat food directly in containers, glass often provides better long-term value.
How Many Containers Do You Actually Need?
A good starting point: multiply the number of meals you prep per week by the number of days before you restock. If you prep 5 lunches and 5 dinners each Sunday and eat them over 5 days, you need at least 10 medium containers. Add 4–6 small containers for snacks and a couple of large containers for bulk batches. Most meal preppers find a collection of 15–25 containers covers a full week comfortably.
Budgeting Tips
- Buy sets rather than individual containers — sets of 10 or 20 typically cost 20–40% less per unit than buying singles.
- Look for sales at warehouse stores like Costco and Sam's Club, especially in January (New Year's resolution season) and September (back-to-school season).
- Start with plastic for your first season of meal prepping, then upgrade individual sizes to glass as you learn which sizes you actually use most.
- Check that lids are interchangeable across the set — mismatched or missing lids are the most common reason people replace containers prematurely.