How Many Grams of Alcohol in a Shot of Vodka?
A 44ml 40% vodka = 13.9g = 1 US standard drink. Enter your shot size and ABV for a precise BAC estimate.
Calculate Your Vodka BAC →Vodka is the world's most popular spirit, but the amount of alcohol in "a shot of vodka" varies enormously depending on the measure size and the brand's ABV. A standard 44ml US shot of 40% vodka contains 13.9g of pure ethanol — essentially one US standard drink. A UK 25ml pub measure of the same vodka has only 7.9g. Understanding these differences is essential for accurate BAC calculations.
How to Calculate Grams of Alcohol in Vodka
Formula: Volume (ml) × ABV (decimal) × 0.789 = grams. For the most common vodka: 44ml (US 1.5oz shot) × 0.40 × 0.789 = 13.9g. This is almost exactly one US standard drink (14g). For UK 25ml pub single: 25 × 0.40 × 0.789 = 7.9g (≈1 UK unit).
Complete Vodka Grams Table by Shot Size and ABV
| Shot Size | Country | 37.5% (Smirnoff) | 40% (Absolut/Grey Goose) | 43% | 50% |
|---|---|---|---|---|---|
| 25ml | UK pub single | 7.4g | 7.9g | 8.5g | 9.9g |
| 35ml | Scotland/Ireland | 10.4g | 11.0g | 11.8g | 13.8g |
| 44ml (1.5 oz) | USA standard | 13.0g | 13.9g | 14.9g | 17.4g |
| 50ml | UK pub double | 14.8g | 15.8g | 16.9g | 19.7g |
| 60ml (2 oz) | US double | 17.8g | 18.9g | 20.3g | 23.6g |
Grams = Volume × ABV × 0.789. US standard drink = 14g. UK unit = 8g.
Enter your vodka shot size and ABV into the BAC calculator for a personalised grams and BAC estimate — whether you drink 25ml, 35ml, or 44ml.
Calculate Your Vodka BAC →Popular Vodka Brands and Their ABV
| Brand | ABV | 25ml Grams | 44ml Grams | Notes |
|---|---|---|---|---|
| Smirnoff Red | 37.5% | 7.4g | 13.0g | Most popular UK vodka; below standard 40% |
| Smirnoff No.21 (US) | 40% | 7.9g | 13.9g | US version is 40% |
| Absolut | 40% | 7.9g | 13.9g | Global standard |
| Grey Goose | 40% | 7.9g | 13.9g | Premium French vodka |
| Belvedere | 40% | 7.9g | 13.9g | Polish premium |
| Ciroc | 40% | 7.9g | 13.9g | Grape-based vodka |
| Stolichnaya | 40% | 7.9g | 13.9g | Latvian/Russian heritage |
| Tito's Handmade | 40% | 7.9g | 13.9g | Most popular US craft vodka |
Note that Smirnoff in the UK is 37.5% ABV — 6.25% less alcohol than 40% ABV brands. Over 4 shots, this difference equals about 1.8g of ethanol — meaningful for BAC calculations. Always check the ABV on your specific bottle.
BAC Impact of Vodka Shots by Weight
| Shots (44ml, 40%) | Total Grams | BAC 70kg Male | BAC 60kg Female |
|---|---|---|---|
| 1 shot | 13.9g | 0.029% | 0.042% |
| 2 shots | 27.8g | 0.058% | 0.084% |
| 3 shots | 41.6g | 0.088% | 0.126% |
| 4 shots | 55.5g | 0.117% | 0.168% |
| 5 shots | 69.4g | 0.146% | 0.210% |
Peak BAC, empty stomach, Widmark formula. 2 US standard shots puts a 60kg woman over the 0.08% limit.
The Smirnoff 37.5% Factor
Smirnoff is the world's best-selling vodka brand, and in the UK it is sold at 37.5% ABV. Many BAC calculators default to 40% for vodka. A 25ml Smirnoff actually contains 7.4g versus 7.9g for a 40% vodka — a 6% underestimate per shot. Over 4 UK pub singles, this amounts to a 2g difference, which for a 60kg woman represents approximately 0.006% BAC error. Small, but worth noting when being precise.
Track your vodka consumption with the exact ABV and shot size in Alcomato for the most accurate BAC estimate.
Get Accurate Vodka BAC →Frequently Asked Questions
Does mixing vodka with a soft drink change the alcohol content?
No — the amount of ethanol is entirely determined by the vodka portion. A vodka and tonic contains exactly as much ethanol as the neat vodka shot it was made from. However, carbonated mixers (tonic, soda) may slightly increase absorption speed — see our article on carbonation and BAC spikes for details.
Is 40% vodka stronger than 37.5% vodka?
Yes — 40% ABV vodka has 6.7% more alcohol per ml than 37.5% vodka. For a 44ml shot: 40% = 13.9g vs 37.5% = 13.0g. Over an evening of multiple shots, the difference becomes significant. Many people assume "vodka is vodka" without checking the ABV on the label.
How many vodka shots equal a glass of wine?
A 175ml glass of 13% wine contains 18.0g. A 44ml 40% vodka shot contains 13.9g. So one glass of wine ≈ 1.3 vodka shots. Or two UK 25ml 40% pub singles (15.8g) ≈ one medium glass of wine. These calculations are important when people mix drinks and try to estimate their total alcohol intake. Use the BAC calculator to add up mixed drink nights accurately.
Get accurate vodka BAC by entering the exact brand ABV and measure size into the calculator.
Open the BAC Calculator →Disclaimer: This article provides educational information only. It does not constitute medical or legal advice. BAC calculators provide estimates, not exact measurements. Individual BAC varies based on numerous factors including body composition, metabolism, food intake, medications, and health conditions. Never rely solely on calculators to determine if you are safe to drive. The only safe BAC for driving is 0.00%. Always use alternative transportation after consuming alcohol. If you struggle with alcohol use, consult a healthcare professional or contact SAMHSA's National Helpline at 1-800-662-4357.