Is bulletproof coffee (butter coffee) keto?

Bulletproof coffee (butter coffee)

Keto-friendly Yes — bulletproof coffee (butter coffee) is keto-friendly.

Black coffee blended with butter and MCT or coconut oil has no carbs — but about 230 kcal of fat per mug. It keeps many people full through the morning; treat it as breakfast rather than a free add-on.

Nutrition per serving

1 mug (8 fl oz coffee) · 268 g
Net carbs
0g
Calories
228kcal
Protein
0.5g
Fat
25g
Total carbs
0 g
Fiber
0 g
One serving vs. a 20 g daily net-carb limit 0%

Bulletproof coffee (butter coffee) has virtually no net carbs, so portion size is about calories and fullness, not carbs.

Nutrition facts for bulletproof coffee (butter coffee)
NutrientPer servingPer 100 g
Calories228 kcal85 kcal
Total carbohydrate0 g0 g
Dietary fiber0 g0 g
Net carbs0 g0 g
Protein0.5 g0.2 g
Fat25 g9.4 g

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How to eat bulletproof coffee (butter coffee) on keto

  • Start with a teaspoon of MCT oil — larger amounts can upset your stomach.

Low-carb recipes that replace bulletproof coffee (butter coffee)

Frequently asked questions

Is bulletproof coffee (butter coffee) keto?

Yes — bulletproof coffee (butter coffee) is keto-friendly. Black coffee blended with butter and MCT or coconut oil has no carbs — but about 230 kcal of fat per mug. It keeps many people full through the morning; treat it as breakfast rather than a free add-on.

How many net carbs are in bulletproof coffee (butter coffee)?

1 mug (8 fl oz coffee) (268 g) of bulletproof coffee (butter coffee) has about 0 g net carbs (0 g total carbs minus 0 g fiber). Per 100 g, that's 0 g net carbs.

How much bulletproof coffee (butter coffee) can I eat on keto?

Bulletproof coffee (butter coffee) has virtually no net carbs, so portion size is about calories and fullness, not carbs. On a typical 20 g daily limit, one serving uses about 0% of your carbs.

More drinks

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Source: Calculated from USDA SR Legacy: 8 fl oz brewed coffee blended with 1 tbsp butter and 1 tbsp coconut oil (MCT oil is similar). 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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