Vodka is famous for being carb-free: a standard shot of plain, unflavored vodka contains 0 grams of carbohydrates per 100 g. But the moment you reach for flavored vodkas, pre-mixed cans, or vodka cocktails spiked with juice and syrup, the carb count changes quickly. This calculator converts any serving-size carb value from a nutrition label into a clean per-100g number so you can compare products on an equal basis.
Built for keto dieters, carb counters, and anyone tracking macronutrients, the tool works with metric or US fluid ounces. It uses an estimated drink density to convert volume to weight, because nutrition databases usually report carbs per 100 g of liquid, not per 100 ml. Just enter the serving size, the carbs per serving, and the drink type — the result appears instantly with a step-by-step breakdown.
Whether you are logging a plain shot, checking a flavored brand, or estimating a cocktail, this calculator gives you a reliable g-per-100g figure in seconds.
🍸 Vodka Carbs Per 100g Calculator
Find the true carb count per 100 g for any vodka, flavored vodka, or vodka cocktail.
🍸 Serving information
⚖️ Drink density estimate
Step-by-Step Guide
Start with the nutrition label on your bottle, can, or cocktail recipe.
- Find the serving size on the label (usually 1.5 fl oz / 44 ml).
- Enter the serving size and choose ml or fl oz.
- Enter the total carbohydrate grams listed for that one serving.
- Pick the drink type that best matches your beverage to estimate density.
- Press Calculate. The result shows carbs per 100 g, carbs per 100 ml, and the full calculation steps.
For a plain 80-proof vodka, the carbs per serving is 0 g, so the per-100g result is also 0 g — no density adjustment can create carbs out of nothing.
The Math Behind the Calculation
Nutrition labels usually report per serving, while diet databases report per 100 g. To move between the two, you need both volume and weight.
Serving mass is obtained by converting serving volume to millilitres, then multiplying by density:
Serving mass (g) = serving volume (ml) × density (g/ml)
Plain vodka is about 0.94 g/ml because ethanol is less dense than water. Flavored vodkas and mixers are closer to 0.96–1.00 g/ml. The calculator uses these estimates automatically when you choose a drink type. If you know an exact density from the product spec sheet, choose Custom and enter it.
Worked Examples
Example 1 — Plain 80-proof vodka. Serving: 1.5 fl oz (44.4 ml). Carbs: 0 g. Density: 0.94 g/ml. Mass = 44.4 × 0.94 = 41.7 g. Carbs per 100 g = (0 ÷ 41.7) × 100 = 0 g. Result: zero carbs per 100 g, as expected.
Example 2 — Sweetened flavored vodka. Serving: 1.5 fl oz (44.4 ml). Carbs: 3 g. Density: 0.96 g/ml. Mass = 44.4 × 0.96 = 42.6 g. Carbs per 100 g = (3 ÷ 42.6) × 100 = 7.04 g. This shows why flavored vodkas can be surprisingly high in carbs.
Example 3 — Vodka tonic. Serving: 250 ml. Carbs: roughly 15 g from tonic. Density ≈ 1.00 g/ml. Mass = 250 g. Carbs per 100 g = (15 ÷ 250) × 100 = 6 g.
Standard Carb Values for Common Vodka Drinks
Use these approximate values as a reference; always check the actual label when available.
| Drink | Serving | Carbs per serving | Carbs per 100 g |
|---|---|---|---|
| Plain unflavored vodka (80 proof) | 44 ml | 0 g | 0 g |
| Flavored vodka (sweetened) | 44 ml | 2–4 g | 4.7–9.4 g |
| Vodka with diet soda | 250 ml | 0–1 g | 0–0.4 g |
| Vodka with regular soda | 250 ml | 9–15 g | 3.6–6 g |
| Vodka tonic | 250 ml | 15–20 g | 6–8 g |
| Cosmopolitan | 120 ml | 10–14 g | 8.3–11.7 g |
Common Mistakes to Avoid
- Confusing grams and millilitres. 100 ml of vodka is not 100 g; it is about 94 g. Using ml directly overstates the per-100g value slightly.
- Ignoring the mixer. A “vodka” nutrition fact often includes just the spirit. If you add juice, soda, or syrup, those carbs count.
- Using a 100 ml value as if it were 100 g. Labels outside the US often list per 100 ml; converting to per 100 g requires the density factor.
- Assuming flavored vodka is always low carb. Some brands add real fruit juice and sugar; a 1.5 oz serving can contain 4–8 g of carbs.
- Forgetting to reset between drinks. If you compare multiple products, clear the fields or use Reset to avoid mixing up data.
Frequently Asked Questions
Does all vodka have 0 carbs per 100 g? No. Plain distilled vodka has effectively no carbohydrates, but flavored vodkas can contain added sugars. Check the label. The USDA FoodData Central database (fdc.nal.usda.gov) is a useful source.
Is carbs per 100 g the same as carbs per 100 ml? Not for vodka. Because alcohol is less dense than water, 100 ml of vodka weighs about 94 g. To compare with food databases, use per 100 g.
Why does my brand list carbs per 100 ml? Many European labels use volume-based declarations. Multiply by the density to get per 100 g.
Can this calculator help with cocktail tracking? Yes, if you enter the full serving size and total carb value for the whole drink. For calories per shot, see the cocktail calories per ounce calculator; for a sugar comparison, try the Vodka Sugar Calculator. If you are comparing beer, the beer carbs per 100g calculator works the same way.