Best Keto Protein Bars

What "net carbs" actually means

Keto bars lean on net carbs, not total carbs. Net carbs are usually calculated as total carbohydrates minus fiber minus a portion of the sugar alcohol content, since fiber and sugar alcohols are absorbed much less completely than other carbs, according to UCLA Health's explanation of net carbs. We list both total carbs and sugar for every bar below so you can do the math yourself instead of trusting a claim printed on the wrapper.

Not all sugar alcohols behave the same way, though. Maltitol in particular is absorbed more than most other sugar alcohols, which means it can affect blood sugar and ketosis more than its net carb listing suggests, according to Cleveland Clinic's overview of sugar alcohols. If a keto bar leans heavily on maltitol, its real-world carb impact may be higher than the label implies.

We score every bar the same way regardless of carb strategy, and we always list total carbs and sugar alongside the score so you can judge for yourself.

What to check before you buy

• Do the math yourself. Subtract fiber and sugar alcohols from total carbs rather than trusting a net carbs number printed on the front of the package. The FDA does not officially define or regulate the term.
• Watch for maltitol and sorbitol specifically. They are more likely to affect ketosis and cause digestive upset than allulose or erythritol.
• Total carbs still matter if you are strict about your daily carb budget, not just the marketed net number.
• Pair a low net carb count with real protein and fat, not just fiber, for a bar that actually keeps you satisfied.