Syns in Kettle Crisps: Complete Slimming World Guide

Updated on 
9 March, 2026

Are Kettle Crisps High In Syns? - Our Unofficial Slimming World Syn Guide!

If you are a snacker, finding slimming world-friendly snacks like crisps isn't always easy, crisps can often be loaded with saturated fat and have a high syn value on the plan, but what about popular brands such as Kettle crisps? Are they high in syns?

Kettle crisps have varying syns according to the size of the bag and flavour you choose, on average you can expect a 40g bag to have around 10 syns, making them high in syns on the plan.

Within our syn guide below, we will discuss why Kettle crisps are so high in syns, some syn values of their range and low syn alternative crisps to help you stay on track with your weight loss!

Why Are Kettle Crisps So High In Syns?

At 10 syns for a 40g packet, Kettle crisps are very high in syns, consuming around 80% of your 15 syn daily allowances.

These crisps get a high syn value due to their fat content since the crisps are fried in oil, for example, a 30g serving of plain salted Kettle crisps can have up to 9g of fat in them!

To stay on track, we recommend choosing smaller portions of these crisps or switching to baked options which often have less fat, Jacob's baked crinklys are a good example.

Syn Values Of Kettle Crisps

Kettle has a large range of crisps on offer coming in various flavours and sizes, to help you compare the syns in their range, we've listed all of their values below.

  • Kettle Sea Salt & Balsamic Vinegar of Modena Potato Chips 40g - 10 syns.
  •  KETTLE Chips Lightly Salted Crisps 30g - 7.5 syns.
  •  Kettle Lightly Salted Potato Chips 40g - 10 syns.
  •  Kettle Mature Cheddar & Red Onion Potato Chips 40g - 10 syns.
  •  Kettle Sweet Chilli & Sour Cream Potato Chips 40g - 10 syns.
  •  Kettle Sea Salt & Crushed Black Peppercorns Potato Chips 40g - 10 syns.
  •  KETTLE Chips Sour Cream & Sweet Onion 150g- 7.5 syns.
  •  KETTLE Chips Vegan Sheese & Red Onion 135g - 7.5 syns.
  •  KETTLE Veg Chips Lightly Salted 40g - 10 syns.
  •  Kettle Lightly Salted Crisps 25g - 6.5 syns.
  •  Kettle Mature Cheddar & Red Onion Crisps 4 x 30g - 7.5 syns.

Low Syn Alternatives To Kettle Crisps

If you find Kettle crisps to be too high in calories and syns, there are lots of other crisps (ultimate syn crisp list here) on the market which are more syn friendly, we've listed some alternatives to help you out below.

  • O'Donnells Irish Sea Salt Crisps 125g - 10.5 syns.
  •  Lidl Snaktastic Tortilla Chips, Nacho Cheese (25g) – 6 syns.
  •  O'Donnells Furrows Crinkle Cut Mature Cheese & Red Onion Flavour 50g - 12.5 syns.
  •  O'Donnells Hickory Smoked Flavour Crisps 125g - 10 syns.
  •  Lidl Snaktastic Popd, Sour Cream & Onion (25g) – 5 1/2 syns.
  •  Aldi Snackrite Crisps, Roast Chicken (25g bag) – 6 1/2 syns.
  •  Aldi Snackrite Okey Dokeys, all varieties 12 pack (25g bag) – 6 1/2 syns.
  •  Lidl Snaktastic Tortilla Chips, Cool Original (25g) – 6 syns.
  •  KP Snacks Meanies, Pickled Onion (17g bag) - 4 1/2 syns.
  •  Hula Hoops, Original, 25g bag – 6 1/2 syns.
  •  Tayto Wheelies, Bacon (20g bag) - 5 syns. 
  •  Snack a Jacks Snack a Jacks Jumbo Caramel (each) - 2 1/2 syns.
  •  Tayto Occasions Bacon Fries (25g) - 6 syns.
  •  Snack a Jacks Snack a Jacks Salt & Vinegar (26g bag) - 5 1/2 syns.
  •  Tayto Beef & Onion Crisps (25g bag) - 6 1/2 syns.
  •  Aldi Specially Selected Red Pepper & Cheddar Corn Tortilla Chips (25g) – 6 1/2 syns.
  •  O'Donnells Sweet Chilli Flavour Crisps 50g - 12.5 syns.
  •  O'Donnells Authentic Hand Cooked Tipperary Crisps Jalapeno & Sour Cream 125g - 8 syns for 30g.

Last Words

To conclude, Kettle crisps are high in syns, with the average 40g bag having around 10 syns, which is the majority of your 15 syn daily allowance, we would therefore suggest snacking on these crisps in moderation.

In order to save syns, opt for small portions of crisps are switch to healthier options like baked crisps or even popcorn, we have a great syn guide to low syn popcorn here.

Frequently Asked Questions

How are syn values calculated?

Syn values are calculated using a formula based on calories, saturated fat and sugar content per serving. They’re not the same as calories — a product can be low in calories but higher in syns if it’s high in sugar or fat. Always check the official Slimming World app for the most accurate and up-to-date syn values.

Do syn values change?

Yes. When manufacturers reformulate their products, the syn value can go up or down. This is why we recommend double-checking with the Slimming World app or your consultant, especially if a product’s packaging has changed recently.

How many syns should I have per day?

Most Slimming World members work with 5 to 15 syns per day. Your consultant will advise on the right amount for you. The key is to use your syns on the things you enjoy most — whether that’s a chocolate bar, a glass of wine, or a packet of crisps.

Jennifer
Jennifer is a certified nutritionist and weight loss coach with a Master's in Nutrition from Cambridge. With over 10 years experience, she shares healthy recipes and science-backed slimming tips on SheCooksSheEats to help people reach their wellness goals. Jennifer stays up-to-date by regularly attending conferences and continuing her nutrition education. She aims to provide research-backed advice to inspire balanced, happy living.
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