Meal Prep Container Size Guide
Container size is where many meal preppers go wrong. A tub that looks big online can be too small for a proper lunch, while oversized boxes make portions look mean and waste fridge space. This guide explains which sizes to buy.
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Compare the dedicated buying guides for budget meal prep containers, mid range glass containers and premium meal prep containers before choosing a set.
Useful sizes to compare
These picks cover full lunch boxes, mixed glass storage, and sauce-friendly tubs.
Harbour Housewares Glass Food Storage Containers
A strong mid-range pick for people moving from plastic to glass meal prep containers.
- Price band
- Mid range: £15-£30 target
- Material
- Glass
- Best for
- A balanced glass upgrade without paying premium-set prices
- Airtight-style lids for fridge storage
- Glass base avoids staining from curry or tomato sauce
- Good everyday size for weekday lunches
Watch out: Glass is heavier than plastic for commuting.
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BOROHOUSE 5-Pack Glass Storage Containers
A mid-range borosilicate glass set for buyers who want practical lunch boxes without a large 10-pack.
- Price band
- Mid range: £15-£30 target
- Material
- Borosilicate glass
- Best for
- A compact glass set for weekday lunches and leftovers
- Five-container format suits a working week
- Glass bases resist odours
- Useful if your current cupboard has no reliable lunch boxes
Watch out: Five packs are less flexible if you also prep breakfasts and snacks.
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Dealusy 100-Piece Meal Prep Containers
A high-count plastic set for buyers who want lots of usable tubs rather than a premium material.
- Price band
- Budget: under £15 target
- Material
- Plastic
- Best for
- High-volume batch cooking, freezer portions, and shared households
- Large piece count suits freezer batches
- Good for prepping for more than one person
- Cheap enough to keep many portions ready
Watch out: Large multipacks take cupboard space and can include mixed capacities.
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Quick size chart
Use container size as a buying filter before material or brand. For most adults, a full lunch or dinner portion needs around 900 ml to 1 litre unless the meal is very calorie dense.
| Size | Best use | Avoid using for |
|---|---|---|
| 250-350 ml | Sauces, dips, nuts, berries, small snacks | Complete meals |
| 400-500 ml | Overnight oats, yogurt bowls, sides, small lunches | Large reheated dinners |
| 650-750 ml | Light lunches, salads, smaller portions | High-volume rice or pasta meals |
| 900 ml-1 litre | Standard lunches and dinners | Tiny snacks or sauce storage |
| 1.2-1.5 litre | Large salads, family leftovers, batch ingredients | Compact work bags |
| 2 litre+ | Soups, stews, bulk batch storage | Individual portion control |
Best size for work lunches
For a work lunch, 900 ml to 1 litre is the safest choice. It fits chicken and rice, pasta, curry and rice, chilli, burrito bowls, stir fry, and salads without crushing everything together.
If you eat smaller lunches, 750 ml can work. If you train hard or eat higher-calorie meals, choose 1 litre rather than trying to force food into a compact box.
Best size for freezer meal prep
For freezer portions, buy both individual tubs and larger batch tubs. Individual 750 ml to 1 litre portions are easiest for grab-and-go meals. Larger 1.5 to 2 litre tubs are better for freezing a family-size chilli, curry base, or soup.
Always leave headroom in freezer containers. Liquids expand as they freeze, and overfilled tubs are more likely to crack or force lids open.
How many sizes do you really need?
Most people need three sizes: small sauce/snack tubs, standard 1 litre lunch containers, and one or two larger batch containers. More variety looks useful, but too many shapes creates lid clutter.
Frequently Asked Questions
Is 500ml big enough for meal prep?
500ml is usually too small for a full adult lunch unless the meal is very dense. It is better for overnight oats, snacks, sides, or smaller portions.
Is 1 litre too big for lunch?
No. A 900ml to 1 litre container is the most useful size for a complete lunch because it has room for protein, carbs, vegetables, and sauce.
What size meal prep containers are best for weight loss?
A 750ml to 1 litre container works well. Use the portion inside the container to control calories rather than buying a tiny box that leaves you hungry.
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