Allulose is keto only in small portions: it has ~12 g of net carbs per 1 tablespoon, against the keto diet's 5 g-per-serving limit.
Net carbs
12 g
per 1 tablespoon
These are the carbs that count on keto: total carbs minus fiber.
Allulose has 0 net carbs per tablespoon because it is a rare sugar that is largely not metabolized and does not raise blood glucose.
Nutrition facts for allulose
0 g
Fat
0 g
Protein
0 g
Fiber
Why allulose is keto only in small portions?
On keto the goal is to stay under ~5 g of net carbs per serving; allulose has 12 g per 1 tablespoon (12 g total − 0 g of fiber).
How much allulose can I eat on keto?
To stay under 5 g of net carbs, the limit is ~5 g of allulose.
Related
Yes
Erythritol
0 g net
/ 1 tablespoon
In moderation
Coconut sugar
11 g net
/ 1 tablespoon
No
Honey
17 g net
/ 1 tablespoon
Yes
Aspartame
0 g net
/ 1 packet (1 g)
In moderation
Sugar
12 g net
/ 1 tablespoon
Yes
Xylitol
0 g net
/ 1 tablespoon
See all: Keto sweeteners
Source: nutritional estimate (USDA-style reference) · Confidence: high
Reviewed by the Ketorai team · Last updated: July 2, 2026 · How we assign the verdict
For information only. This does not replace advice from a health professional.
Reviewed by the Ketorai team · Last updated: July 2, 2026 · How we assign the verdict
For information only. This does not replace advice from a health professional.
Something off? Let us know.
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