For a lower-calorie afternoon snack, compare the declared kcal for the whole bar rather than relying on words such as “light” or “protein”. Alpen’s specification lists 65 kcal for a 19 g Summer Fruits bar, while UK retailer listings give 83 kcal for a 21.5 g Kellogg’s Special K Juicy Red Berry bar; check the current UK pack before choosing either. If a small bar does not suit the gap until your next meal, compare portion size, protein and fibre too, recognising that the protein-bar examples discussed below have higher declared calories.
Look at the kcal for the complete bar and check how many bars are in a wrapper. Weetabix Cereals’ specification lists 65 kcal for one 19 g Alpen Light Summer Fruits bar, although that specification is not for a current UK pack. ASDA lists 83 kcal for one 21.5 g Kellogg’s Special K Juicy Red Berry bar.
Consider whether a small bar suits that gap, then compare portion size, protein and fibre alongside calories. Tesco lists 10 g protein and 196 kcal for a 40 g Nature Valley Protein Peanut & Chocolate bar; its lower-calorie Kellogg’s example is a smaller 21.5 g bar at 83 kcal.
Read the ingredient and allergen information on the exact flavour and current pack. The product examples include cereals containing gluten, milk, soya, peanuts or almonds; a claim about one dietary characteristic does not answer every allergen question.
Start with the amount you would actually eat, then compare its nutrition information and ingredients against what matters for your afternoon snack.
| Priority | What to check | Your needs |
|---|---|---|
| Calories and portion | Check whether kcal are stated per bar or per pack, and count the bars you intend to eat. For a specific comparison, ASDA declares 83 kcal per 21.5 g Kellogg’s Special K Juicy Red Berry bar. | I want to know the calories in my whole afternoon snack, not just the figure for one bar if I will eat two. |
| Time until the next meal | Compare bar size, protein and fibre on the same per-bar basis as calories. Tesco lists 196 kcal and 10 g protein for a 40 g Nature Valley Protein Peanut & Chocolate bar; those figures do not establish how long it will satisfy an individual appetite. | If dinner is late, I want to decide whether a small bar suits the gap or whether I would rather choose a different portion. |
| Other nutrition details | Read sugar, saturated fat and fibre values for the exact serving. Wholegrain or reduced-sugar wording alone does not tell you its calories; traffic-light colours can help compare labelled products. | Calories matter to me, but I also want to compare what the different bars contain. |
| Allergens and ingredients | Check the current product’s ingredients, allergen declaration and any precautionary wording. Do this for each flavour, even if another bar in the range carries a dietary claim. | I need the specific bar I buy to fit my ingredient or allergen requirements, not merely the brand’s general description. |
A lower calorie figure can come with a smaller portion. Weetabix Cereals lists 65 kcal and 1.0 g protein for its 19 g Alpen Light Summer Fruits bar; those figures alone cannot tell you whether it suits a long wait until dinner.
Compare the whole bar’s calories, size, protein and fibre, and check the current UK pack rather than relying on the name.
Protein and calorie figures answer different questions. Tesco lists 196 kcal and 10 g protein for a 40 g Nature Valley Protein Peanut & Chocolate bar, compared with 83 kcal for the 21.5 g Special K Juicy Red Berry bar listed by Tesco and ASDA.
Decide which matters more for this snack, then compare kcal per complete bar before choosing a multipack.
Ingredients differ between bars. A product labelled gluten free may still contain peanuts or almonds; Tesco’s Eat Natural Peanuts, Almonds & Salted Caramel listing is one example.
Read the full ingredient and allergen information for the exact current flavour and pack.
Wholegrain content and a sugar comparison do not state how many calories are in a bar. Graze’s comparison for its Oat Boost range is a manufacturer claim about sugar, not a per-bar calorie comparison.
Use the nutrition panel for the chosen serving to compare kcal, sugar, saturated fat and fibre.
These named products and ranges illustrate different label checks; the figures apply to the specified examples, not every bar made by each brand.
Weetabix Cereals lists 65 kcal and 3.8 g fibre for one 19 g Alpen Light Summer Fruits bar.
ASDA and Tesco list 83 kcal per 21.5 g Kellogg’s Special K Juicy Red Berry bar; Tesco states that this variant contains 41% wholegrains.
Graze describes its Oat Boost range as wholegrain oat flapjacks and makes a reduced-sugar comparison claim for the range.
Tesco lists a 40 g Nature Valley Protein Peanut & Chocolate bar at 196 kcal with 10 g protein.
Tesco lists 198 kcal, 10.4 g protein and 2.2 g fibre for a 40 g Eat Natural Peanuts, Almonds & Salted Caramel bar.
Trek’s protein bars and flapjacks offer another format to compare when the snack decision extends beyond small cereal bars.
These options include smaller cereal-bar multipacks for comparing afternoon-snack portions and Nature Valley protein-bar multipacks for a different portion and protein comparison. Check each current product page and pack before buying.
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Consider this smaller bar when comparing calories for one afternoon serving.
ASDA and Tesco list 83 kcal per 21.5 g bar for the matching Special K Juicy Red Berry variant. Their product information lists barley, oats, wheat, soya and milk as allergens; check the current pack.
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This is another small-bar multipack to consider for an afternoon portion.
Compare calories per bar on the Dark Chocolate pack itself; the Red Berry figures do not describe this flavour. Check its ingredients and allergen information too.
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Check the serving information if you are comparing this four-pack with individually listed bars.
The pack name states 104 g in total. Use the current nutrition panel to establish kcal for the amount you intend to eat; “Light” alone is not a calorie figure.
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Consider this larger bar format if portion size and protein matter more to you than choosing a small cereal bar.
Compare its own per-bar kcal and protein figures with the smaller options. Check the Salted Caramel Nut variant’s full ingredient and allergen information rather than applying figures from another Nature Valley flavour.
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This is a larger protein-bar option to compare against a smaller afternoon cereal bar.
Tesco lists a 40 g Nature Valley Protein Peanut & Chocolate bar at 196 kcal with 10 g protein. Confirm the nutrition information for this multipack’s current bars, and check the full allergen declaration: a peanut flavour is not suitable for someone avoiding peanuts.
Compare kcal for the complete amount you plan to eat, checking whether the label’s serving is one bar or an entire pack. For reference, ASDA lists 83 kcal per 21.5 g Kellogg’s Special K Juicy Red Berry bar; use the current label for any other flavour or size.
A calorie figure cannot tell you how a bar will suit your appetite. Compare portion size, protein and fibre per whole bar alongside kcal: Tesco lists a 40 g Nature Valley Protein Peanut & Chocolate bar at 196 kcal and 10 g protein, while its Special K Juicy Red Berry listing gives 83 kcal for a 21.5 g bar.
No. A gluten-free label does not answer whether a bar contains nuts. Tesco labels its Eat Natural Peanuts, Almonds & Salted Caramel bar gluten free, but lists both peanuts and almonds in its ingredients; check the complete allergen information on the current pack.
No conclusion about a particular bar’s calories follows from those descriptions alone. Compare kcal for the exact serving, then use its nutrition panel to consider sugar, saturated fat and fibre. Graze’s Oat Boost sugar comparison is a brand claim, not a calorie figure for every variant.
They offer a quick way to compare labelled nutrition details, but they do not replace the serving information or allergen declaration. NHS family guidance describes traffic-light labels as a comparison aid for packaged snacks; for a cereal bar, also read kcal per whole bar and the ingredients on the exact pack.