Is soy milk (unsweetened) keto?

Soy milk (unsweetened)

Keto-friendly Yes — soy milk (unsweetened) is keto-friendly.

Unsweetened soy milk is low in carbs and higher in protein than nut milks. Sweetened "original" has about 7–8 g sugar per cup.

Nutrition per serving

1 cup · 243 g
Net carbs
1g
Calories
80kcal
Protein
7g
Fat
4g
Total carbs
3 g
Fiber
1.9 g
One serving vs. a 20 g daily net-carb limit 5%

About 1250 g of soy milk (unsweetened) adds up to 5 g net carbs — roughly 5.1 typical servings.

Nutrition facts for soy milk (unsweetened)
NutrientPer servingPer 100 g
Calories80 kcal33 kcal
Total carbohydrate3 g1.2 g
Dietary fiber1.9 g0.8 g
Net carbs1 g0.4 g
Protein7 g2.9 g
Fat4 g1.7 g

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Frequently asked questions

Is soy milk (unsweetened) keto?

Yes — soy milk (unsweetened) is keto-friendly. Unsweetened soy milk is low in carbs and higher in protein than nut milks. Sweetened "original" has about 7–8 g sugar per cup.

How many net carbs are in soy milk (unsweetened)?

1 cup (243 g) of soy milk (unsweetened) has about 1 g net carbs (3 g total carbs minus 1.9 g fiber). Per 100 g, that's 0.4 g net carbs.

How much soy milk (unsweetened) can I eat on keto?

About 1250 g of soy milk (unsweetened) adds up to 5 g net carbs — roughly 5.1 typical servings. On a typical 20 g daily limit, one serving uses about 5% of your carbs.

What is a good keto substitute for soy milk (unsweetened)?

See our full guide: keto milk substitutes.

More drinks

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Source: Typical unsweetened soy milk label (1 cup: 3 g carbs, 2 g fiber, 7 g protein). Net carbs = total carbohydrate − fiber. Rating: Keto-friendly — Low in net carbs per typical serving (about 5 g or less). Fits easily into a 20–30 g daily limit. How we rate foods. Last reviewed October 18, 2026.

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