Syns in SW Hifi Bars: Complete Slimming World Guide

Updated on 
9 March, 2026

Are SW Hifi Bars Slimming World Friendly? - Our Guide!

If you are looking for a low-syn sweet treat and you are trying to be good on the slimming world plan, you might be wondering about SW Hifi bars, are they syn-friendly?

Are SW Hifi Bars Slimming World Friendly?

Well, Slimming World's Hifi bars can be used as your healthy extra B due to their high fibre, allowing you to have up to two bars syn free, however out of this allowance they are classed as having three syns each.

We've put together a small guide below which will take you through how many SW Hifi bars you can have on the slimming world, syn values and some low syn alternative Hifi bars from other brands for when you feel like snacking.

How Many SW Hifi Bars Can I Eat On Slimming World?

At 3 syns a SW Hifi bar, you can have up to five of these bars before using all of your daily syn allowance, making them a great low syn sweet treat. Since these bars are high in fibre, you can also use them as your healthy extra B, with them having around 3 grams of fibre per bar, you are allowed up to two as your healthy extra B on the plan.

Which Other Bars Count As My Healthy Extra B?

Since SW Hifi bars count as your healthy extra B, you might be wondering if any other bars do too, we've listed some other choices you can snack on below.

  • 2 Aldi Benefit bars.
  • 2 Alpen Light cereal bars.
  • 1 Fibre one Milk chocolate popcorn.
  • 4 Ryvita crunchy rye bread.

Syn Values Of SW Hifi Bars

Slimming world's Hifi bars come in a huge variety of flavours, but most have similar syn values.

Syn Values Of SW Hifi Bars

We've listed the syns of their range down below.

  • Slimming World Hi-Fi Fall For Me 6 Fruit and Nut Cereal Bars 120g - 3 syns.
  • Slimming World Hi-Fi Seduce Me 6 Salted Caramel Bars 114g - 3 syns.
  • Slimming World Hi-Fi Go Nuts For Me 6 Peanut Butter Bars 114g - 3 syns.
  • Slimming World Hi-Fi Cherish Me 6 Chocolate Orange Bars 120g - 3 syns.
  • Slimming World Hi-Fi Dream of Me 6 Dark Chocolate Mint Bars 120g - 3 syns.
  • Slimming World Hi-Fi Romance Me 6 Rocky Road Bars 120g - 3 syns.
  • Slimming World Hi-Fi Crunch Me 6 Choc Honeycomb Bars 120g - 3 syns.
  • Slimming World Hi-Fi Love Me 6 Lemon Drizzle Bars 120g - 3 syns.
  • Slimming World Hi-Fi Millionaire's Shortcake Bars 120g - 3 syns.
  • Slimming World Hi-Fi 6 Blackberry & Apple Bars 120g - 3 syns.
  • Slimming World Hi-Fi 6 Carrot Cake Bars 120g - 3 syns.

Low Syn Alternatives To SW Hifi Bars

If you are tired of Hifi bars and your looking for an alternative high-fibre snack, we've got some other low-syn bars listed for you down below.

  • Fibre One 90 Calorie Red Velvet High Fibre Cake Bars 4 x 25g - 4 syns.
  • Fibre One 90 Calorie Peanut Butter High Fibre Popcorn Bars 4x21g - 4 syns
  • Fibre One 90 Calorie Caramel Protein High Fibre Bars 3 x 24g - 4 syns.
  • Superdrug Slender Plan Dark Chocolate & Peanut Butter High Fibre Snack Bars 12 x 40g - 10 syns.
  • Nature Valley Crunchy Granola Variety Cereal Bars 5 X 42G - 10 syns.
  • Tesco Oat & Honey Granola Bars 6 Pack 180G - 7 syns.
  • Tesco 6 Coconut & Chocolate Bars 180G - 6 syns.
  • Alpen Light Cereal Bars Jaffa Cake 5X19g - 3.5 syns.
  • Eat Natural Protein Bar 3 X 45G - 11.5 syns.
  • Kellogg's Special K Juicy Red Berry Bars 6X21.5G - 4 syns.
  • Cadbury Nuttier Cranberry & Almond Milk Chocolate Bar 3X40g - 10 syns.
Low Syn Alternatives To SW Hifi Bars

Last Words

Overall, Hifi bars have 3 syns each on the slimming world plan or two can be consumed as your healthy extra B since they are high in fibre. To save syns we recommend only having two of these Hifi bars a day to keep them syn free or try some other Hex B bars such as Alpen Lights.

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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