Shoppers with a per-snack calorie target
If you usually eat one whole bag, its stated kcal per bag is the starting point. Check how many bags are in the multipack and whether their size matches the portion you want.
Who is this choice for?
Shoppers comparing baked and conventional crisps
A smaller bag and a different recipe can both affect the kcal shown for one pack. Compare kcal per 100g as well as kcal per bag before deciding what accounts for the difference.
Shoppers checking salt or dietary suitability
Calories, salt and allergen information answer different questions. Read the nutrition and ingredient information for the exact flavour you intend to buy rather than relying on a range-wide description.
What should you check?
Start with the amount you expect to eat, then compare the nutrition figures on the same basis. The NHS notes that a manufacturer’s stated portion may differ from yours.
| Priority | What to check | Your needs |
|---|---|---|
| Calories per snack | Read kcal per bag or stated serving. If you eat more than one serving from a larger bag, account for the amount you actually take. | I want to know whether the portion I will eat fits my own snack target. |
| Comparable pack sizes | Compare kcal per 100g alongside kcal per bag, and check each bag’s weight. Walkers lists 438 kcal per 100g for Oven Baked Sea Salt and 518 kcal per 100g for Ready Salted. | A smaller bag might suit me, but I also want to distinguish portion size from a difference between the crisps. |
| Multipack format | Check the number of bags and grams per bag. For a sharing bag, check how many stated servings it contains before treating it as one snack. | Sealed individual bags make my intended portion clear; if I choose a sharing bag, I can portion it separately. |
| Nutrition claims | Read kcal and salt figures separately. Check what a reduced-salt or reduced-fat claim compares with rather than using it as a calorie figure. | When calories are my priority, I do not want a salt claim or dietary label to stand in for the energy information. |
| Ingredients and allergens | Check the ingredient list, highlighted allergens and any may-contain statement for the exact flavour. Dietary-suitability labels do not give its calorie value. | I need a flavour that meets my ingredient or dietary requirements as well as my preferred portion size. |
Which assumptions can mislead you?
-
A smaller bag means lower-calorie crisps
A smaller portion can contain fewer calories without the crisps being lower in kcal per 100g. In Walkers’ figures, Oven Baked Sea Salt has both a smaller stated bag and fewer kcal per 100g than Ready Salted; both measures matter to that particular comparison.
Use kcal per bag for the snack you expect to eat, then kcal per 100g when comparing different bag sizes.
-
Reduced salt or a dietary label means fewer calories
These labels describe different product characteristics. A Joybuy listing states 129 kcal per 25g bag for Walkers 45% Less Salt Dash of Salt & Vinegar; the reduced-salt description does not replace its calorie figure.
Choose the characteristic relevant to you, and check energy and salt separately on the exact pack.
-
A sharing bag counts as one stated serving
Tyrrells describes its 150g Lightly Sea Salted bag as five 30g servings, each providing 156 kcal. The serving figure does not describe the whole bag.
If you are using a per-snack calorie target, portion the bag before eating or compare it with an individual pack.
What do the brand examples show?
These figures describe particular products and pack formats, not every crisp made by each brand. Compare the flavour and serving information on the pack you choose.
Walkers
The brand’s Oven Baked Sea Salt and Ready Salted packs offer a direct comparison between stated individual portions.
- Walkers lists Oven Baked Sea Salt at 96 kcal per 22g bag and 438 kcal per 100g.
- Its Ready Salted figure is 130 kcal per 25g bag and 518 kcal per 100g; the difference should not be extended to every flavour or format.
Tyrrells
Lightly Sea Salted is listed in both an individual bag and a larger sharing format.
- Tyrrells states 208 kcal for its 40g bag and 156 kcal for each stated 30g serving of the 150g bag.
- The product may contain milk. Check the current pack if that warning matters to you.
Kettle Chips
The Lightly Salted product has per-100g nutrition and product-specific dietary-suitability information.
- KETTLE Chips lists 516 kcal, 29.5g fat and 0.7g salt per 100g for Lightly Salted.
- Its gluten-free, vegan and vegetarian descriptions address dietary suitability, not the calories in the portion you serve.
Seabrook
The Sea Salted bag has both per-bag and per-100g figures.
- Seabrook lists 164 kcal per 31.8g bag and 516 kcal per 100g; it labels this product gluten-free and suitable for vegetarians and vegans.
- Its 31.8g bag is larger than the checked 22g Walkers baked bag, so compare both the serving and per-100g figures.
Pipers
Upton Cheyney Jalapeño & Dill provides an example of a flavoured crisp with per-100g nutrition.
- Pipers lists 514 kcal, 29g fat and 0.75g salt per 100g for this flavour.
- Its gluten-free, vegetarian and vegan labels do not establish the calories in a particular bag or serving.
REAL Crisps
The Sea Salt 35g listing gives an individual-bag figure as well as a per-100g figure.
- Tesco lists 176 kcal per 35g bag and 503 kcal per 100g for REAL Crisps Sea Salt.
- Those figures apply to the listed Sea Salt product; check the label when choosing another flavour or format.
Portioned crisps on Joybuy
These individual-bag multipacks offer different flavours and bag sizes for a portion-led crisp shop. Check the current nutrition panel for each exact flavour before using a per-bag calorie target.
No image available
PopChips Sour Cream & Onion 5 x 17g
The five individual 17g bags make it possible to check nutrition against a single-bag snack portion. Read the current flavour label for kcal per bag, kcal per 100g and allergens.
No image available
PopChips Barbecue 5 x 17g
This Barbecue variant has five 17g bags for separately portioned snacks. Check its own nutrition and allergen information rather than using the figures for Sour Cream & Onion.
No image available
Walkers Oven Baked Variety Pack Crisps 6 x 22g
Six 22g bags provide individual portions in a variety pack. Check the nutrition and ingredient information for each included flavour; the Walkers Sea Salt figures elsewhere in this article do not establish figures for the whole variety pack.
No image available
Walkers Oven Baked Cheese & Onion Crisps Flavour 6 x 22g
This single-flavour multipack contains six 22g bags. Use the Cheese & Onion label for its kcal per bag and per 100g, and check its ingredient and allergen information separately from Sea Salt.
No image available
Pom-Bear Original Potato Crisps 12 x 13g
Each of the 12 bags is 13g, a smaller stated portion than the other bags shown here. Compare kcal per 100g as well as kcal per bag before attributing any per-bag difference to the crisps themselves.
Common questions
Should I compare kcal per bag or per 100g?
Use kcal per bag if you expect to eat the whole bag, and kcal per 100g to compare crisps sold in different bag sizes. The NHS notes that nutrition labels provide energy per 100g and sometimes per portion; the stated portion may not be the amount you eat.
Are baked crisps always lower in calories?
No conclusion about every baked crisp follows from the cooking description alone. Walkers lists its Oven Baked Sea Salt product at 96 kcal per 22g bag and 438 kcal per 100g; check the figures for any other flavour or product you are considering.
Does a reduced-salt claim tell me the calories?
No. A reduced-salt claim describes a salt comparison, not the energy in a serving. The Joybuy listing for Walkers 45% Less Salt Dash of Salt & Vinegar states 129 kcal per 25g bag, so check that figure against your own portion target separately.
Do plain salted crisps still need an allergen check?
Yes, check the exact product’s ingredients and may-contain statement. Tyrrells states that its Lightly Sea Salted crisps may contain milk, while Seabrook labels its Sea Salted product gluten-free and suitable for vegetarians and vegans; neither statement should be applied to another product without checking its pack.
Where can I find the figures needed for a comparison?
Read the nutrition information on the prepacked crisps. NHS guidance says the label includes energy, fat, saturates, carbohydrate, sugars, protein and salt, usually per 100g and sometimes per portion. Where a front-of-pack traffic-light label is present, use the fuller nutrition panel for the exact figures and serving basis.