Coffee Drink
Keto Coffee: Carbs, Calories and a Simple Butter Coffee Recipe
Keto coffee describes coffee chosen for a low-carbohydrate eating pattern, from plain black coffee to versions with cream or added fat. This guide includes an optional butter-and-coconut-oil recipe with a thicker, more coating texture.
Drink Snapshot
- Caffeine
- 95 mg referenceUSDA FDC 171890: 240 g (8.5 oz) prepared brewed coffeeGeneric brewed-coffee reference; added butter and coconut oil do not contribute caffeine.
- Calories
- Estimated 85 kcalFull recipe; USDA butter and coconut-oil referencesIngredient estimate for the prepared coffee, butter and coconut oil.
Serving, sugar and sources
- Serving
- 240 g (8.5 oz) brewed coffee + 5 g (1 US tsp) butter + 5 g (1 US tsp) coconut oil
- Made with
- Prepared brewed coffee, unsalted butter and coconut oil
- Sugar
- 0 g (rounded). 0.003 g from the generic butter reference, rounded; no sweetener. Total carbohydrate is also under 1 g.
- Preparation
- About 5 minutes once coffee is brewed
The optional fat-added recipe, not every coffee called keto. Estimated saturated fat: 6.7 g. See the full calculation or label comparison.
Key Takeaways
- 1Choose additions for the texture you want: black coffee, cream and butter coffee are different experiences.
- 2If oil separates, mix briefly again; if the drink feels greasy, use less added fat next time.
- 3For the butter-and-oil version, mix briefly in an open heatproof jug with a frother rated for warm liquids.
On This Page11 Sections
What Counts as Keto Coffee?
Plain brewed coffee is already very low in carbohydrate. The term keto coffee is also used for butter coffee and for coffee with low-carbohydrate additions, but it does not define one drink or guarantee a dietary result.
Choosing Keto Coffee Ingredients
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| Choice | What to check | Practical distinction |
|---|---|---|
| Plain black coffee or decaf | Coffee amount and caffeine needs | Added butter or oil is unnecessary |
| Milk or cream | Total carbohydrate per serving and your actual portion | Naturally occurring milk sugar still counts |
| Plant-based drink | The exact carton, serving size and total carbohydrate | Unsweetened and barista versions can differ |
| Sugar-free syrup or creamer | Total carbohydrate as well as sugar, plus calories | A front-label claim does not replace the nutrition panel |
| Butter or coconut oil | Measured portion, calories and saturated fat | Very low carbohydrate does not mean calorie-free |
The FDA label guide explains why the serving size matters: using twice the labeled amount doubles the listed nutrients. Its carbohydrate guide distinguishes total carbohydrate from sugars and includes fiber and sugar alcohols. Read total carbohydrate first when comparing additions; do not use “no added sugar” as a synonym for zero carbohydrate.
A weighed milk example: USDA whole milk contains 4.8 g carbohydrate per 100 g. Estimated carbohydrate contributions are 1.4 g for 30 g (2 US tbsp) milk and 7.2 g for 150 g (⅝ US cup). Use your carton’s carbohydrate figure when it differs. Our coconut milk latte uses a specified barista drink; it is not coconut oil or a promise that every coconut product is low in carbohydrate.
Portion Comparison: Additions vs. Coffee
All three estimated examples start with 240 g (8.5 oz) prepared brewed coffee. Keeping that input constant shows what the fat changes.
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| Additions to the same coffee | Estimated calories | Total carbohydrate | Saturated fat |
|---|---|---|---|
| None | 2 kcal | 0 g reference | Negligible |
| 5 g (1 US tsp) butter + 5 g (1 US tsp) coconut oil | 85 kcal | Under 1 g | 6.7 g |
| 10 g (2 US tsp) butter + 10 g (2¼ US tsp) coconut oil | 165 kcal | Under 1 g | 13.3 g |
Ingredient calculation
The calculations use USDA records 171890, coffee, 173430, unsalted butter and 171412, coconut oil. Their energy values per 100 g are 1, 717 and 892 kcal. The smaller recipe totals 2.4 + 35.85 + 44.6 = 82.85 kcal, rounded to 85. Doubling the fats gives 163.3 kcal, rounded to 165. The coffee stays unchanged.
The smaller version contains approximately 6.65 g saturated fat and 0.003 g carbohydrate; its sugar also rounds to 0 g. These tiny carbohydrate figures are database arithmetic, not a promise of analytical zero in every product. The whole-milk example uses 61 kcal and 4.8 g carbohydrate per 100 g.
Caffeine remains a separate question. The generic coffee reference is 40 mg per 100 g, giving 96 mg in 240 g (8.5 oz), rounded here to 95 mg. Added butter and coconut oil do not add caffeine or remove what is already present. Your actual brew is unmeasured and may differ.
Keto Coffee Recipe
Prepare the base with the drip-coffee method, then weigh 240 g (8.5 oz) finished coffee.
Leave headroom in the mug.
Recipe
Butter and Coconut-Oil Coffee
- Makes:
- 1 serving
- Time:
- About 5 minutes; coffee already brewed
Ingredients
- 240 g (8.5 oz) prepared brewed coffee
- 5 g (1 US tsp) unsalted butter
- 5 g (1 US tsp) coconut oil
Equipment
- Scale
- Spoon
- Handheld frother rated for warm liquids
- Open heatproof jug, at least 600 ml (20.3 US fl oz)
- 300 ml (10.1 US fl oz) mug
Method
- Prepare. Put 240 g (8.5 oz) prepared brewed coffee in an open heatproof jug of at least 600 ml (20.3 US fl oz) capacity. Let vigorous steaming subside.
- Melt. Add 5 g (1 US tsp) unsalted butter and 5 g (1 US tsp) coconut oil. Stir until the butter and coconut oil melt.
- Mix. Use a handheld frother rated for warm liquids. Keep its head submerged, work in short bursts, and stop before lifting it out.
- Serve. Pour into a 300 ml (10.1 US fl oz)-capacity mug and drink warm. Stir again if oil separates.
Estimated nutrition: 85 kcal · 0 g total sugar. Per coffee, using the stated butter and coconut oil.
What Does Keto Coffee Taste Like?
Black keto coffee can be bright and fruit-led or dark and roasty; cream makes it softer and fuller. The optional recipe on this page is a different experience again: buttery, unsweetened and more coating than either plain coffee or a small splash of cream.
Coconut oil can add a coconut note, depending on the product you choose. The melted fats need mixing to disperse, and the cup can separate as it stands. Drink it warm and judge the texture as well as the coffee: mix briefly again if the oil separates, or reduce the fat portion next time if the drink feels greasy.
I prefer keeping keto coffee black when I want a clear coffee flavor, and adding cream when I want a softer mouthfeel.
Keto Coffee vs. Bulletproof and Latte
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| Name | What it tells you | What it does not establish |
|---|---|---|
| Keto coffee | A coffee chosen for a low-carbohydrate eating pattern | One standard recipe |
| Bulletproof coffee | A branded coffee, butter/ghee and MCT preparation | That any coconut-oil coffee is the same recipe |
| Skinny latte | Often a latte made with lower-fat milk | Zero milk sugar or a universal low-carb serving |
If ordering in a café, name the drink, milk or cream, sweetener choice and amount. “Keto coffee” alone leaves too many details open. Ask for the nutrition information for the actual product and size when available.
Fasting and Weight-Loss Questions
Does keto coffee break a fast? This butter-and-oil recipe supplies calories, so it does not meet a zero-calorie fast. Low carbohydrate and fasting are separate ideas. Medical fasting has its own instructions from the care team.
Will it cause weight loss or put me into ketosis? The drink’s name and carbohydrate estimate cannot establish either outcome. Added fat raises the energy in the cup.
Butter and coconut oil also supply saturated fat. The American Heart Association advises replacing saturated fat with unsaturated sources to support heart health. Consider the drink within your overall diet rather than judging it only by its carbohydrate count.
Fixing Oily or Separated Keto Coffee
| Problem | First adjustment |
|---|---|
| Oil floats on top | Mix briefly again while warm; serve promptly |
| Drink feels greasy | Reduce the fat portion rather than adding more coffee and more fat together |
| Coconut flavor is too strong | Check whether the oil is virgin or refined, or leave it out |
| Creamer has more carbs than expected | Recheck the actual serving and total-carbohydrate line |
| Drink tastes weak | Correct the brewed coffee before changing its additions |
Common Questions
Can I make keto coffee without butter?
Yes. Plain black coffee is the simplest version, or choose and measure an addition that fits your own dietary plan.
Are MCT oil and coconut oil the same?
No. A formulated MCT product and ordinary coconut oil have different compositions. Use the actual product’s nutrition label and avoid transferring health claims between them.
Can I use instant coffee?
Yes. Make enough plain instant coffee to weigh out 240 g (8.5 oz) of the prepared drink, then add the recipe's 5 g (1 US tsp) butter and 5 g (1 US tsp) coconut oil. Our instant-coffee guide gives a measured starting method; use your product's caffeine information for this variation.
Editor's Take
Sources and Further Reading
7 references
External links open in a new tab
Reading labels
Ingredient calculations
- Brewed coffee, FDC 171890USDA FoodData Central · Per 100 g: 1 kcal, 0 g carbohydrate and 40 mg caffeine.(opens in a new tab)
- Unsalted butter, FDC 173430USDA FoodData Central · Per 100 g: 717 kcal, 50.489 g saturated fat and 0.06 g carbohydrate.(opens in a new tab)
- Coconut oil, FDC 171412USDA FoodData Central · Per 100 g: 892 kcal, 82.475 g saturated fat and 0 g carbohydrate.(opens in a new tab)
- Whole milk, FDC 171265USDA FoodData Central · Per 100 g: 61 kcal and 4.8 g total carbohydrate for the measured milk example.(opens in a new tab)