Choosing cereal shouldn’t feel like a quiz, but with so many boxes promising “high fibre” or “low sugar,” it’s easy to get stuck in the aisle. I’ve been there — wondering if Bran Flakes or Weetabix is the healthier option. So, I dug into the ingredients, nutrition labels, and expert advice to find out.
If you’re in a hurry, here’s the short answer:
Bran Flakes are higher in fibre and lower in calories, but Weetabix has less sugar — so Bran Flakes edge ahead overall, unless you’re watching your sugar.
What’s Actually in These Cereals?
For the purpose of this article we are comparing Kellogg’s Bran Flakes vs Weetabix Original. Here’s a quick look at what each cereal contains:
| CEREAL | INGREDIENTS |
| Weetabix Original | Wholegrain Wheat (95%), Malted Barley Extract, Sugar, Salt, Niacin, Iron, Riboflavin (B2), Thiamin (B1), Folic Acid |
| Kellogg’s Bran Flakes | Wholewheat (59%), wheat bran (18%), wholewheat flour, sugar, barley malt extract, glucose syrup, salt, natural flavouring, niacin, iron, vitamin B6, riboflavin, thiamin, folic acid, vitamin D, vitamin B12 |
What’s in them and why it matters:
- Grains: Both cereals are big on whole grains, which is great for fibre. Bran Flakes have a mix of whole wheat and wheat bran, while Weetabix sticks mainly to whole grain wheat.
- Sweetness: Bran Flakes are the sweeter option, with added sugar and glucose syrup. Weetabix is simpler — just a small amount of sugar.
- Flavour: They both use barley malt extract for that slightly toasted taste, but Bran Flakes also throw in “natural flavouring.”
- Added vitamins: Both are fortified, but Bran Flakes pack in a few extra nutrients like vitamin D and B12.
How They Stack Up Nutrition-Wise
Wondering which one’s got the nutritional edge? Here’s a side-by-side look at the key numbers per serving:
| Nutrient | Bran Flakes (30g) | Weetabix (37.5g) |
|---|---|---|
| Calories | 107 kcal | 136 kcal |
| Fibre | 5.1g | 3.8g |
| Carbs | 20g (4.2g sugars) | 26g (1.6g sugars) |
| Protein | 3.3g | 4.5g |
| Fat | 0.7g | 0.8g |
| Vitamins & Minerals | Vitamin D, B vitamins, Iron | Thiamin, Riboflavin, Niacin, Folic Acid, Iron |
A couple of things to keep in mind here:
- Serving size matters: Weetabix’s serving is slightly bigger (37.5g vs. 30g), which is why its calorie count looks higher. But when you compare them gram for gram, the difference is tiny — 358 kcal per 100g for Bran Flakes vs. 362 kcal for Weetabix.
- Fibre: Bran Flakes win here — 5.1g per serving vs. 3.8g for Weetabix (17g vs. 10g per 100g). That extra fibre helps keep you full and supports digestion.
If you’re dealing with constipation, Bran Flakes are the better choice — their higher fibre content can help relieve symptoms when combined with plenty of water. - Protein: Weetabix has the edge here, with 4.5g per serving compared to 3.3g in Bran Flakes (12g vs. 11g per 100g).
- Fat: Both are low in fat and saturated fat — no worries there.
- Sugar: Weetabix is the clear winner — just 1.6g of sugar per serving, while Bran Flakes have 4.2g (14g vs. 4.3g per 100g).
And one extra point for Bran Flakes: they include vitamin D and B12, which Weetabix doesn’t — useful if you’re not getting much of those elsewhere.
So, Which One’s Actually Healthier?
It depends on what you’re aiming for — but here’s the honest breakdown:
- Go for Bran Flakes if fibre is your priority. They’ve got 5.1g per serving (17g per 100g), which means they’ll keep you fuller for longer and help with digestion.
- Pick Weetabix if cutting back on sugar is more important to you. With just 1.6g of sugar per serving (4.3g per 100g) and slightly more protein, it’s the lighter option in that department.
So, which is healthier? Overall, Bran Flakes take the lead thanks to their higher fibre and slightly lower calorie count — but if you’re focused on sugar, Weetabix is still a solid, healthy choice.
Trying to Lose Weight? Read This
If weight loss is your goal, Bran Flakes have the edge. They’re lower in calories per serving (107 kcal vs. 136 kcal for Weetabix) and pack in more fibre — which means they’ll help you feel fuller, longer. Even when you compare them by 100g, Bran Flakes still come out slightly lighter (358 kcal vs. 362 kcal).
More fibre, fewer calories — that combo can really help if you’re trying to keep portions in check without feeling hungry an hour later.
Can Babies Eat These?
If you’re thinking about giving cereal to your baby, here’s what the NHS recommends: wait until around 6 months before introducing wheat-based cereals like Weetabix or Bran Flakes.
For older babies who’ve started solids, Weetabix is usually the better option. It has less fibre and less sugar, making it gentler on tiny tummies — especially when softened with a bit of milk.
Bran Flakes, on the other hand, aren’t ideal for babies under 1. The high fibre content (while great for adults) can be too much for little digestive systems and may affect how well they absorb certain nutrients.
Always introduce new foods slowly, and keep an eye out for any signs of allergies or sensitivities.
Final Verdict: Bran Flakes vs Weetabix
Both are solid choices — it just comes down to what matters most to you. Bran Flakes bring the fibre and fullness, while Weetabix keeps things light on sugar and gentle on the stomach.
Bottom line? You can’t go too wrong with either, but if you’re after more fibre and staying power, Bran Flakes take the win.
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- The Best Bran Cereals for Your Morning Routine
- Kellogg’s All-Bran Original vs All-Bran Buds: What’s the Difference?
- Is Special K Red Berries Cereal Actually Healthy?
- Top 10 Highest Fiber Cereals to Jumpstart Your Morning
- Corn Flakes vs Special K
- Are Multi Grain Cheerios healthy?
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