Shoppers comparing one-bag calories
If you plan to eat one bag with your morning tea, its declared kcal and weight tell you more about that snack than a per-100g figure on its own.
Who is choosing?
Shoppers balancing portion and flavour
A larger lentil-crisp serving or a familiar potato-crisp flavour may matter more to you than choosing the bag with the fewest declared calories. Compare salt and fat on the portion you would eat as well.
Shoppers checking dietary suitability
Check ingredients, allergens and any vegetarian, vegan or gluten-free declaration for the exact flavour and pack. A calorie figure cannot establish whether a crisp suits those requirements.
What should you compare?
Start with the amount you would actually eat, then use the nutrition panel and ingredient information to narrow the choice.
| Priority | What to check | Your needs |
|---|---|---|
| Portion calories | Read kcal for the full bag or intended serving and note its weight in grams. Use per-100g values when comparing products on the same weight basis. | I expect to eat one bag, so I want to know its total calories—not just the figure for 100g or a smaller suggested serving. |
| Salt and fat | Compare salt, fat and saturates for the portion you would eat. Food Standards Agency guidance says traffic-light labels, where present, show whether listed nutrients are low, medium or high. | Even if a bag has fewer calories, salt or saturated fat may still affect my choice. A ‘less fat’ claim does not answer those questions. |
| Ingredients and allergens | Read the ingredient and allergen statement on the exact flavour. Look for a product-specific vegetarian, vegan or gluten-free declaration if you need one. | I need to establish whether this particular pack suits my dietary requirements before comparing its calories with another flavour. |
What is easy to overlook?
-
Treating ‘baked’ or ‘less fat’ as the whole answer
A fat comparison does not establish a lower calorie or salt total for the bag you will eat. Tyrrells declares 140 kcal and 0.63g salt for a 30g serving of its Sweet Chilli & Red Pepper Lentil Crisps.
Read kcal, salt, fat and saturates for your intended portion before relying on a front-of-pack claim.
-
Comparing only per-100g figures
The Walkers, Tyrrells and Seabrook examples use 22g, 30g and 31.8g portions respectively. A per-100g comparison alone does not tell you the calories in one of those bags.
Check kcal per bag alongside its weight; use per-100g figures as a separate, equal-weight comparison.
-
Leaving salt out of the comparison
On their stated portions, Seabrook Sea Salt & Vinegar declares 0.8g salt, Tyrrells Sweet Chilli & Red Pepper Lentil Crisps 0.63g, and Walkers Oven Baked Cheese & Onion 0.20g.
If salt matters to your choice, compare the amount in the full bag rather than inferring it from the cooking method or main ingredient.
-
Assuming similar crisps have the same allergens
Walkers Oven Baked Cheese & Onion contains milk, while Seabrook makes different dietary suitability declarations for its Sea Salt & Vinegar product.
Read the current ingredient and allergen statement whenever you change flavour, pack format or product.
Which brands offer relevant examples?
These brand examples refer to the named products and stated portions, not every crisp in each range.
Walkers
Its Oven Baked Cheese & Onion product provides a labelled 22g portion for a one-bag comparison.
- Walkers declares 96 kcal, 2.8g fat, 0.3g saturates and 0.20g salt per 22g pack.
- The pack contains milk, and its smaller portion matters when comparing it with larger bags. Check the current pack for other allergen warnings.
Tyrrells
Its Sweet Chilli & Red Pepper Lentil Crisps provide a 30g serving for shoppers considering a lentil-crisp format.
- Tyrrells declares 140 kcal and 5.7g fat per 30g serving.
- That serving also declares 0.63g salt. The brand’s less-fat comparison with standard potato crisps does not establish that every lentil crisp has fewer calories or less salt.
Seabrook
Its Sea Salt & Vinegar potato crisps come with nutrition information for a 31.8g bag.
- Seabrook declares 159 kcal per bag and describes this product as gluten-free and suitable for vegetarians and vegans.
- The same bag declares 0.8g salt; check the exact flavour rather than applying its dietary declarations across the range.
Kettle Chips
Its Lightly Salted product is a hand-cooked potato-crisp example with per-100g nutrition information.
- Kettle Chips declares 516 kcal, 29.5g fat and 0.7g salt per 100g for this product, which it describes as gluten-free and suitable for vegans and vegetarians.
- The cited product is a sharers format. Check the amount you intend to serve before comparing its calories with an individual bag.
McCoy's
Its Salted flavour provides a per-100g reference for shoppers considering ridged potato crisps.
- McCoy's declares 533 kcal, 32g fat and 1.3g salt per 100g for the Salted flavour.
- Check the individual bag weight to work out the amount you would eat at a morning break.
REAL Hand Cooked Crisps
Its Sweet Chilli product is listed in a case of 24 individual 35g packs.
- REAL declares 502 kcal and 27.2g fat per 100g for Sweet Chilli, and describes its range as vegetarian and gluten-free.
- Use the 35g pack weight with the current nutrition label when comparing one pack with a smaller morning-break portion.
Joybuy options for a morning break
These options include small bags of crisps or crisp-style snacks, a baked-crisp multipack and lentil cakes. Compare the exact portion you plan to eat: a cake is not the same serving format as an individual crisp bag.
No image available
PopChips Sour Cream & Onion 5 x 17g
Five 17g bags make it possible to choose one defined portion for a break. Check the nutrition and allergen information for this flavour before comparing it with other bags.
No image available
PopChips Barbecue 5 x 17g
This barbecue variant also comes as five 17g bags. Check its own per-bag nutrition and allergen statement rather than assuming it matches the Sour Cream & Onion flavour.
No image available
Walkers Oven Baked Variety Pack Crisps 6 x 22g
Six 22g bags offer a defined portion in a variety pack. Check the nutrition and allergen details on the particular flavour you choose; the declared figures for Cheese & Onion should not be assumed to apply to every bag.
No image available
Walkers Oven Baked Cheese & Onion Crisps 6 x 22g
For a one-bag comparison, Walkers declares 96 kcal and 0.20g salt per 22g Cheese & Onion pack. The product contains milk; read the current pack for its full allergen statement.
No image available
Kallo Protein Packed Lentil Cakes 100g
These lentil cakes are an alternative to a bag of crisps, supplied in a 100g pack. Decide how many cakes you would eat, then check the label’s serving information to compare that portion with a single crisp bag.
Common questions
How do I compare crisps when the bags are different sizes?
Start with kcal for the whole bag or serving you intend to eat, then check its weight and the per-100g figure. Walkers declares 96 kcal for a 22g Oven Baked Cheese & Onion pack, Tyrrells 140 kcal for a 30g Sweet Chilli & Red Pepper lentil-crisp serving, and Seabrook 159 kcal for a 31.8g Sea Salt & Vinegar bag. Those totals describe different-sized portions, not equal weights.
Does ‘baked’ or ‘less fat’ settle the choice?
No. Compare the calories, salt, fat and saturates for the portion you would eat. A claim comparing fat with another type of crisp does not, by itself, tell you whether a particular bag has fewer calories or less salt than the other options you are considering.
What else on the label is useful besides calories?
Check the pack weight, salt, fat, saturates, ingredients and allergens. Food Standards Agency guidance explains that traffic-light labels, where present, can help you compare calories and nutrients; green, amber and red indicate low, medium and high levels of the labelled nutrient.
Are lower-calorie crisps automatically suitable for a restricted diet?
No. Dietary suitability depends on the exact product and flavour. Walkers says its Oven Baked Cheese & Onion product contains milk, while Seabrook describes its Sea Salt & Vinegar product as gluten-free and suitable for vegetarians and vegans. Read the current pack’s ingredient and allergen information before choosing.