The Carbs Nutrition Guide (Grains & Potatoes)
Soba (buckwheat noodles)
Per 100 g as eaten — cooked for grains, pasta, and roots; as sold for bread. One serving = 140 g (Pastas, plain), the FDA reference amount (21 CFR 101.12).
GI(glucose = 100)
Single test — one published study, not a pooled mean.
Yang et al. — buckwheat noodles (China), via University of Sydney GI database (2005)
GL(per 100 g)
19.1 per serving
Single test — one published study, not a pooled mean.
Yang et al. — buckwheat noodles (China), via University of Sydney GI database (2005)
Japan MEXT — Standard Tables of Food Composition in Japan 2020 (8th revised edition), data file of 2026-03-27 — soba, boiled (food 01128) (2020)
Fiber(g/100g)
4.1 g per serving
Japan MEXT — Standard Tables of Food Composition in Japan 2020 (8th revised edition), data file of 2026-03-27 — soba, boiled (food 01128) (2020)
Net carbs(g/100g)
32.3 g per serving
Japan MEXT — Standard Tables of Food Composition in Japan 2020 (8th revised edition), data file of 2026-03-27 — soba, boiled (food 01128) (2020)
Energy(kcal/100g)
182 kcal per serving
Japan MEXT — Standard Tables of Food Composition in Japan 2020 (8th revised edition), data file of 2026-03-27 — soba, boiled (food 01128) (2020)
Protein(g/100g)
6.7 g per serving
Japan MEXT — Standard Tables of Food Composition in Japan 2020 (8th revised edition), data file of 2026-03-27 — soba, boiled (food 01128) (2020)
Sodium(mg/100g)
3 mg per serving
Japan MEXT — Standard Tables of Food Composition in Japan 2020 (8th revised edition), data file of 2026-03-27 — soba, boiled (food 01128) (2020)
Empty cells mean we do not yet have a method-cited source. Rank on the guide tables is the open-rule champion — not medical advice.