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Syns & Slimming World

How Many Syns in Bran Flakes?

By Jenny Updated

Bran Flakes have earned a steady reputation among Slimming World members as one of the most dependable breakfast options on the plan, and once you understand how the cereal slots into the system, it is easy to see why. The flakes themselves are made from wheat bran that has been toasted and lightly sweetened, giving them a malty, slightly nutty character and a satisfyingly crisp bite that holds up well against cold milk.

From a plan perspective, a 40g portion qualifies as a Healthy Extra B choice, which means you can enjoy a generous bowl without it touching your daily Syn allowance, provided you weigh it out properly. That is the crucial bit: a casual pour straight from the box can easily double the intended serving, and anything above the 40g mark stops being a HExB and starts adding Syns, so a kitchen scale really does become your best friend here.

Beyond the Syn maths, Bran Flakes carry a serious fibre punch, which supports the kind of slow, steady digestion that helps you stay full through the mid-morning slump when a slice of toast might have you rummaging for biscuits by ten. Members often pair them with sliced banana, fresh berries or a spoonful of fat-free natural yoghurt to bulk the bowl out into something that feels indulgent without breaking the budget.

They also lend themselves nicely to homemade trail mixes, yoghurt toppings and even savoury crumb coatings if you fancy something a bit different. If you prefer warmer breakfasts, a quick splash of hot skimmed milk transforms them into a comforting porridge-style bowl.

For anyone rebuilding their morning routine on plan, Bran Flakes are an honest, practical, fibre-rich workhorse worth keeping in the cupboard.

Per serving

Bran Flakes — syn values

Portion Syns kcal
30g (non-HExB) 3 103
40g as HExB FREE as HExB 137
40g (counted as Syns) 7 137
50g bowl 8 172
60g large bowl 10 206
100g (per 100g) 17 343
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 Bran Flakes.

10.0syns / 100g
Syns per 100g
useful for comparing brands
20%
of a 15-syn day
based on standard daily allowance
34kcal / syn
calories per syn
the lower, the more 'value' your syns get
6
portion sizes covered
from snack to full serving
17syns
saved by using as HEx
per day, if used as your daily Healthy Extra
3syns
cheapest portionat 30g (non-HExB)
smallest serving

Brand breakdown

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

Brand Product Portion Syns kcal
Kellogg's Bran Flakes 40g (HExB) FREE as HExB 137
Kellogg's Bran Flakes 30g 3 103
Tesco Bran Flakes 40g (HExB) FREE as HExB 135
Sainsbury's Bran Flakes 40g (HExB) FREE as HExB 136
Asda Bran Flakes 40g (HExB) FREE as HExB 138
Morrisons Bran Flakes 40g (HExB) FREE as HExB 136
Aldi Harvest Morn Bran Flakes 40g (HExB) FREE as HExB 137
Lidl Crownfield Bran Flakes 40g (HExB) FREE as HExB 136

Lower-syn alternatives

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

Weetabix (2 biscuits as HExB)

Free as HExB

Two Weetabix count as a Healthy Extra B, just like 40g of bran flakes. They offer a different texture — softer when soaked in milk — and are easy to portion because each biscuit is pre-formed. They pair well with fruit and provide a similar fibre hit for zero syns.

Porridge oats (40g as HExB)

Free as HExB

Forty grams of porridge oats used as your HExB make a warm, filling breakfast at zero syns. They keep you fuller for longer than cold cereal and can be flavoured with cinnamon, vanilla extract or mashed banana. A solid alternative on colder mornings when bran flakes feel too light.

Shredded Wheat (2 biscuits as HExB)

Free as HExB

Two Shredded Wheat biscuits qualify as a Healthy Extra B. They are 100 percent whole grain with no added sugar, making them a slightly more natural option than bran flakes. The larger biscuit size can feel more substantial in a bowl.

FAQs

How many syns in bran flakes?

Bran flakes are Free as a 40g Healthy Extra B portion. If you do not use them as your HExB, a 40g bowl is 7 syns, a 30g serving is 3 syns, and a larger 50g bowl is 8 syns. The values are consistent across Kellogg's, Tesco, Sainsbury's, Asda and own-brand alternatives. Always weigh to stay within your HExB allowance.

Are bran flakes a Healthy Extra B on Slimming World?

Yes, 40g of bran flakes counts as one Healthy Extra B choice on Slimming World, making them completely Free at that portion size. Anything above 40g must be synned separately — for example, 50g would be 8 syns if counted as syns rather than HExB. Weigh carefully, as a casual pour from the box often exceeds 40g significantly.

Can you have bran flakes on Slimming World?

Absolutely. Bran flakes are one of the most popular HExB choices. A 40g portion with skimmed milk from your Healthy Extra A gives you a completely Free breakfast. Top with fresh berries or sliced banana (both Free) for extra bulk and flavour. If you exceed 40g, the whole portion becomes synnable at roughly 17 syns per 100g.

Which bran flakes are best for Slimming World?

All major brands qualify as a 40g Healthy Extra B, including Kellogg's, Tesco, Sainsbury's, Asda, Aldi Harvest Morn and Lidl Crownfield. The calorie counts are nearly identical across brands (135 to 138 calories per 40g), so choose whichever you prefer or buy on offer. There is no meaningful syn difference between them.

Lower-syn cereal alternatives

Food Portion Syns vs current
Oatibix 2 biscuits (45g) HEB portion FREE −3 syns
Oat Bran 28g as HExB 1.5 −1.5 syns
Chia Seeds 1 tbsp (10g) 2 −1 syns
Shredded Wheat 2 biscuits (45g) as HExB 2 −1 syns
All-Bran 40g as HExB 2.5 −0.5 syns

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