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Syns & Slimming World

How Many Syns in Rice Cakes?

By Jenny Updated

Rice cakes are one of the most misunderstood snacks on Slimming World — people assume they are practically free because they feel so light and insubstantial, but even a plain rice cake comes in at around 1.5 syns each, and once you start looking at the flavoured and coated varieties the numbers climb surprisingly fast. A single chocolate-coated rice cake can hit 3.5 syns, and if you are absent-mindedly working your way through a packet of Snack a Jacks while watching telly, you could easily rack up 10 or more syns without feeling like you have eaten anything particularly filling.

The plain ones are genuinely useful as a low-syn base for toppings — a rice cake with some cottage cheese or a laughing cow triangle is a decent snack — but the key mistake people make is treating them as unlimited. They are not free, they are not a Healthy Extra, and the flavoured varieties from brands like Kallo, Snack a Jacks, and supermarket own ranges vary quite a bit in syn value depending on size and coating.

Always check the specific packet because portion weights differ between brands. If you want a genuinely free crunchy snack, raw carrot sticks or pepper slices will always beat a rice cake on plan, but if you budget for them properly rice cakes can absolutely earn their place in your snack rotation.

Per serving

Rice Cakes — syn values

Portion Syns kcal
1 plain rice cake (approx 7-9g) 1.5 28
1 thick plain rice cake (approx 12g) 2 43
1 chocolate-coated rice cake (approx 17g) 3.5 75
1 caramel-flavoured rice cake (approx 13g) 2.5 50
1 yoghurt-coated rice cake (approx 17g) 3.5 72
1 bag Snack a Jacks Sour Cream & Chive (23g) 4 87
1 bag Snack a Jacks Caramel (23g) 4 88
1 mini rice cake (approx 3g) 0.5 12
Syn values are based on Slimming World 2026 guidance. Always double-check with your group or app.

Numbers at a glance

Quick auto-calculated stats for Rice Cakes.

16.7syns / 100g
Syns per 100g
useful for comparing brands
10%
of a 15-syn day
based on standard daily allowance
19kcal / syn
calories per syn
the lower, the more 'value' your syns get
8
portion sizes covered
from snack to full serving
0.5syns
cheapest portionat 1 mini rice cake (approx 3g)
smallest serving

Brand breakdown

Popular supermarket and branded products, with the portion-level syn count.

Brand Product Portion Syns kcal
Kallo Organic Lightly Salted Rice Cakes 1 cake (8g) 1.5 29
Kallo Belgian Dark Chocolate Rice Cakes 1 cake (17g) 3.5 75
Kallo Yoghurt Coated Rice Cakes 1 cake (17g) 3.5 72
Snack a Jacks Sour Cream & Chive 1 bag (23g) 4 87
Snack a Jacks Caramel 1 bag (23g) 4 88
Snack a Jacks Salt & Vinegar 1 bag (23g) 4 85
Aldi Harvest Morn Plain Rice Cakes 1 cake (8g) 1.5 28
Tesco Lightly Salted Rice Cakes 1 cake (8g) 1.5 28

Lower-syn alternatives

Swaps that keep the feel of the original without the syn hit.

Raw vegetable sticks (carrot, pepper, cucumber)

Free

If you are reaching for rice cakes purely for crunch, raw veg gives you the same texture for zero syns. Dip them in fat-free hummus or salsa for extra flavour.

Ryvita Crackerbread (1 slice)

1 syn

Slightly lower per piece than a standard rice cake and feels a bit more substantial. Good base for cottage cheese or ham.

3 plain rice cakes as HExB (where eligible)

Check current SW list

Some very specific branded rice cakes occasionally appear on the HExB list — always verify against the current Slimming World app before assuming.

Shop on Amazon

Products mentioned in this guide, available on Amazon UK.

Available on Amazon

Kallo Organic Lightly Salted Rice Cakes

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As an Amazon Associate I earn from qualifying purchases.

Available on Amazon

Snack a Jacks Sour Cream & Chive Multipack

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FAQs

Are rice cakes free on Slimming World?

No, rice cakes are not a Free Food on Slimming World. Even the plainest rice cake needs to be synned because it is a processed grain product. A standard plain rice cake is around 1.5 syns each. It is a really common mistake to assume they are free because they feel so light, but the calories and carbohydrates add up. Always count them in your daily syn allowance.

How many syns in a Snack a Jacks bag?

A single portion bag of Snack a Jacks (23g) is approximately 4 syns regardless of flavour, though there can be minor differences between varieties. The Caramel and Sour Cream & Chive flavours are the most popular and both sit at 4 syns per bag. If you are buying the sharing bags rather than individual packs, you will need to weigh out your portion carefully because it is very easy to eat far more than 23g without realising.

Are chocolate rice cakes worth the syns?

At 3.5 syns per chocolate-coated rice cake, they are not the worst treat choice but they are not especially filling either. If you are craving chocolate, a Freddo bar at 5 syns or two squares of dark chocolate at around 2.5 syns might feel more satisfying for a similar or lower syn cost. Chocolate rice cakes work best when you want that sweet-crunchy combination and one is genuinely enough to satisfy you.

Can I use rice cakes as a Healthy Extra?

Rice cakes are not generally listed as a Healthy Extra B choice on Slimming World. Some very specific products may occasionally appear on the HExB list, but the vast majority of rice cakes — plain or flavoured — need to come out of your daily syn allowance. Always check the current Slimming World food search in the app before assuming any product counts as a Healthy Extra.

Lower-syn snack alternatives

No lower-syn snack alternatives in our index — Rice Cakes is already at the lower end. Browse the full snack list →

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