Wotsits are the lowest calorie standard crisp per bag in the UK at 82 kcal per 16.5g pack. Quavers contain 86 kcal per 16g bag, and Walkers French Fries contain 98 kcal.
A standard Walkers bag contains 130–140 kcal per 25g. Switching to Wotsits or Quavers saves 45–55 kcal per snack without giving up crisps entirely.
This guide covers calories per bag, calories per 100g, Slimming World syn values, and WW SmartPoints for the most popular low calorie crisps in the UK.
Wotsits (82 kcal per 16.5g), Quavers (86 kcal per 16g), and Walkers French Fries (98 kcal) are the lowest calorie standard crisps available in UK supermarkets.
All three are part of Walkers' 99 Calories or Less range. Popchips (95 kcal per 23g) and Snack-a-Jacks (95–99 kcal) add two further options below the 100 kcal threshold.
Walkers Baked contains 109 kcal per 25g bag — higher than Wotsits or Quavers but lower than standard Walkers.
The table below compares calories, bag weight, Slimming World syns, and WW SmartPoints for the most popular UK crisp options.
| Crisp | Bag Weight | Calories | SW Syns | WW Points |
|---|---|---|---|---|
| Wotsits | 16.5g | 82 kcal | 4 | 3 |
| Quavers | 16g | 86 kcal | 4.5 | 3 |
| Walkers Squares | 16.5g | 88 kcal | 4.5 | 3 |
| Popchips | 23g | 95 kcal | 5 | 4 |
| Snack-a-Jacks | 25g | 98 kcal | 5 | 4 |
| Walkers French Fries | 19g | 98 kcal | 5 | 4 |
| Walkers Baked | 25g | 109 kcal | 5.5 | 4 |
| Walkers Standard | 25g | 135 kcal | 7 | 6 |
Wotsits and Quavers have the fewest calories per bag because the bag sizes (16–16.5g) are smaller than standard portions. Per 100g, Popchips (413 kcal) and Walkers Baked (436 kcal) have lower calorie density than Wotsits (497 kcal) and Quavers (538 kcal).
Quavers contain 86 kcal per 16g bag. Each bag equals 4.5 Slimming World syns and 3 WW SmartPoints.
Quavers are corn-based and popped rather than fried, which reduces fat content. Each 16g bag contains 4.9g of fat versus 6.5g in a standard 25g Walkers bag.
The 86 kcal total reflects the smaller bag size. Per 100g, Quavers contain 538 kcal — slightly higher calorie density than standard Walkers crisps at 520 kcal per 100g.
Wotsits contain 82 kcal per 16.5g bag — the lowest calorie count of any standard Walkers product. One bag equals 4 Slimming World syns.
The low calorie count comes from the small bag size rather than low calorie density. Per 100g, Wotsits contain 497 kcal compared to 520 kcal for standard Walkers.
Wotsits are the lowest syn mainstream crisp at 4 syns per bag. A standard bag of Walkers costs 7 syns.
Snack-a-Jacks contain 95–99 kcal per 25g bag depending on flavour. The plain rice cake flavour contains 95 kcal. Caramel and sweet chilli flavours contain 99 kcal.
Snack-a-Jacks are made from puffed rice and corn. Per 100g, Snack-a-Jacks contain 380–396 kcal — lower calorie density than any standard fried crisp.
On Slimming World, one bag counts as 5 syns. On WW, one bag is 4 SmartPoints.
Popchips contain 95 kcal per 23g bag. Popchips are heat-popped rather than fried, which reduces fat to 2.4g per bag.
Standard Walkers contain 6.5–7.5g fat per 25g bag. Popchips contain 2.4g fat per 23g bag — around 65% less fat than standard fried crisps.
Per 100g, Popchips contain 413 kcal — the lowest calorie density of any mainstream UK crisp. On Slimming World, one 23g bag is 5 syns.
Baked crisps are lower in calories than fried crisps. Walkers Baked contains 109 kcal per 25g bag versus 130–140 kcal for standard Walkers.
The British Heart Foundation confirms baked and popped crisps are lower in fat per 100g than standard fried crisps. Fat provides 9 kcal per gram — reducing fat content reduces calories proportionally.
Walkers Baked (109 kcal per 25g) has a higher total than Wotsits or Quavers because the bag is larger. Per 100g, Walkers Baked contains 436 kcal — lower than all standard fried Walkers products.
Wotsits (4 syns) and Quavers (4.5 syns) are the lowest syn mainstream crisps in the UK. A standard 25g bag of Walkers costs 7 syns.
Most Slimming World plans allow 5–15 syns per day. A bag of Wotsits at 4 syns leaves room for other synned foods within the daily allowance.
Popchips, Snack-a-Jacks, and Walkers French Fries all cost 5 syns per bag. These offer a larger portion size than Wotsits or Quavers for one additional syn.
For a cheesy crisp option, see the Mini Cheddars syns guide — they cost more syns per bag but taste very different to corn-based crisps.
See also the Quavers syns guide for a full breakdown of bag sizes — the 16g multipack bags at 3.5 syns are the best value low-syn crisp format.
For a full cross-category snack comparison including chocolate, biscuits, and dairy snacks, see the lowest calorie snacks UK guide.
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