Evidence-based nutrition, in plain English — every entry sourced from clinical research.

Barley and buckwheat are both reached for as a rice alternative, but only one of them is actually related to wheat — the other just borrows the name.

Barley and buckwheat side by side, photographed for nutritional comparison
Barley vs Buckwheat — nutrition per 100 g
NutrientBarleyBuckwheat
Calories352 kcal343 kcal
Protein9.91 g13.25 g ✓
Total Carbohydrate77.7 g71.5 g
Dietary Fiber15.6 g ✓10 g
Total Sugars0.8 g ✓2.6 g
Total Fat1.16 g3.4 g
Saturated Fat0.244 g ✓0.74 g
Sodium9 mg1 mg ✓

Notable compounds in each

When to choose each

Barley edges ahead on fibre — noticeably more per 100g than buckwheat — while buckwheat carries appreciably more protein and is virtually sodium-free. Both are dense, filling whole grains eaten as a rice alternative or cooked into a porridge. The practical difference for most people: barley generally contains gluten, while buckwheat, despite its name, is naturally gluten-free.

Common questions

Is buckwheat actually a type of wheat? No — despite the name, buckwheat isn’t a true grain at all botanically (it’s more closely related to rhubarb) and contains no gluten, which is why it’s a popular grain substitute for people avoiding gluten.

Is barley gluten-free? No — barley is a true cereal grain closely related to wheat and contains gluten, so it isn’t suitable for a gluten-free diet.