For weight-management meals, compare the tuna you expect to eat: check calories and protein on the same per-100g basis, then check drained weight where the pack provides it. Spring-water chunks are a straightforward starting point if you want to control the tuna component’s energy content; choose a no-drain format when easier preparation matters more, and check oil-packed tuna separately rather than assuming its nutrition matches spring-water tuna.
If tuna is one part of your lunch, compare its per-100g figures and the amount you will use. NHS food-label guidance notes that nutrition information is given per 100g or 100ml and sometimes per portion; your portion need not match the one on the pack.
If you use several tins a week, check the total drained weight as well as the number and size of the tins. Tesco Groceries lists four 102g drained portions for its 4 x 145g spring-water pack, showing why the weight on the front is not the whole quantity comparison.
If draining a tin or dealing with leftovers gets in the way of making lunch, a ready-to-eat or resealable format may be more useful. Check the individual pack’s instructions for anything left after opening.
Start with the nutrition basis and packing medium, then compare usable quantity, handling and the label details that matter to you.
| Concern | What to check | Who this matters to |
|---|---|---|
| Energy and protein | Compare calories, fat and protein per 100g on the same stated basis; note whether the tuna is packed in water, brine or oil. Marks & Spencer lists 99 kcal and 0.6g fat per 100g for its spring-water chunks, against 189 kcal and 9.0g fat per 100g for its sunflower-oil chunks. | When the rest of my meal already includes a dressing or other additions, I want to know what the tuna contributes before choosing a tin. About 34% of consumers put that energy comparison first. |
| Usable quantity | Check the labelled drained weight rather than relying on gross tin size or tin count. Tesco Groceries lists four 102g drained portions in its 4 x 145g spring-water pack. | If I prepare tuna lunches regularly, I need to know how much fish a pack will give me, not just how large its tins look. Roughly 33% of consumers make usable quantity their primary concern. |
| Preparation and leftovers | Check whether a product is labelled no-drain or ready to eat, and follow its particular after-opening storage instructions. | For a quick lunch, avoiding draining and having a workable plan for leftovers matters more to me than the tin format. Around 20% of consumers chiefly want easier preparation and handling. |
| Pack details | Read salt and allergen information on the current pack, along with any warning about bones and its storage directions. | If I need to check salt or a fish-allergen or bone warning, a broad front-of-pack description will not answer my question. About 13% of consumers put these label checks first. |
The liquid in a tin means its gross weight and drained weight are different. Tesco Groceries lists its 4 x 145g spring-water pack as four 102g drained portions.
Use the labelled drained weight when working out how much tuna you need for a meal or several lunches.
Marks & Spencer lists 99 kcal and 0.6g fat per 100g for its spring-water chunks, compared with 189 kcal and 9.0g fat per 100g for its sunflower-oil version.
Read the packing medium and compare the label figures for the portion you intend to use.
No-drain packaging removes a preparation step, but any tuna left after opening still needs to be handled according to its pack instructions.
Check whether the container can be resealed and how the label says to store and use opened contents.
Salt figures differ between labelled products, and fish-allergen information and warnings that bones may remain need attention in their own right.
Read the current pack for salt, allergens, bones and storage directions before deciding which product suits your needs.
These brands provide useful examples of different packing media and formats; compare the particular product and pack, not the brand name alone.
Tesco’s own-label spring-water four-pack is an example for comparing drained portions in a routine-use multipack.
Asda’s own-label spring-water chunks offer another four-pack whose nutrition is stated on a drained basis.
Princes appears in spring-water chunks and ready-to-use steak formats, so texture and handling are worth checking at product level.
John West offers both standard spring-water chunks and a no-drain pot for shoppers who prefer less preparation.
M&S provides a same-brand example of how the packing medium can change the labelled nutrition.
Sainsbury’s carries branded no-drain and ready-to-use tuna formats that illustrate different ways to handle a quick meal.
These selections cover spring-water and brine chunks for regular meals, plus a no-drain spring-water option for less preparation. Compare each product’s label on its own basis before deciding which suits your portion and handling needs.
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A spring-water multipack to consider if you prepare tuna meals regularly. The title specifies six 145g tins; check the pack’s drained weight and nutrition basis when planning portions.
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A four-tin spring-water pack for repeat lunches. Joybuy lists 106 kcal and 25g protein per 100g drained for this product; use the labelled drained quantity to work out your actual portion.
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A single spring-water tin to consider when a multipack does not fit how often you use tuna. Check its drained weight and the amount you expect to eat rather than treating the 145g tin weight as a drained portion.
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A four-tin chunks option if brine is your preferred packing medium. It is not the same product as Princes spring-water chunks, so compare the current label and drained portion rather than carrying figures across from that pack.
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The no-drain format suits a lunch where skipping the draining step matters. The title specifies three 100g tins; check the nutrition label’s stated basis before comparing it with figures given per 100g drained for standard chunks.
No single packing medium decides how a whole meal fits your plans. If you want to control the tuna component’s calories, compare labels: Marks & Spencer lists 99 kcal and 0.6g fat per 100g for its spring-water chunks, versus 189 kcal and 9.0g fat per 100g for its sunflower-oil chunks.
Check the total drained weight to compare the quantity of tuna, then use nutrition figures stated on the same basis. Tesco Groceries lists four 102g drained portions for its 4 x 145g spring-water pack, so the gross tin weight is not the drained portion size.
Follow the instructions on the particular pack. Tesco’s cited spring-water tins instruct shoppers to transfer unused contents to a non-metallic container, refrigerate them and use them within two days; a resealable pot may have different handling instructions.
Read the current pack’s allergen statement and any bone warning, rather than relying on the product name. The cited ASDA Groceries spring-water tuna information warns that some bones may remain.
Use figures on the same per-100g basis to compare products, then apply them to the amount you will eat. NHS food-label guidance notes that nutrition information is given per 100g or 100ml and sometimes per portion; a labelled portion may differ from yours.