How many units are in a bottle of gin? A standard 70cl bottle of gin at 37.5% ABV contains 26.25 UK units, usually shown as 26.3 on the label. At 40% ABV the same bottle contains 28 units, and at 43% it contains about 30 units.
Gin strength varies more than most people expect. Supermarket London dry gins often sit at 37.5%, many premium gins are 40% to 43%, and navy-strength gins reach 57%. This guide gives the units for every common bottle size and strength, plus singles, doubles, and gin and tonics.
How many units are in a bottle of gin, by size?
In the UK, one unit is 10 ml or 8 grams of pure alcohol. The table shows units for common gin bottles at typical strengths.
| Bottle | Volume | 37.5% ABV | 40% ABV | 43% ABV | 57% ABV |
|---|---|---|---|---|---|
| Miniature | 5cl (50 ml) | 1.9 | 2.0 | 2.2 | 2.9 |
| Quarter bottle | 20cl (200 ml) | 7.5 | 8.0 | 8.6 | 11.4 |
| Half bottle | 35cl (350 ml) | 13.1 | 14.0 | 15.1 | 20.0 |
| Standard bottle | 70cl (700 ml) | 26.3 | 28.0 | 30.1 | 39.9 |
| Litre bottle | 1 L (1,000 ml) | 37.5 | 40.0 | 43.0 | 57.0 |
A 35cl half bottle of 40% gin contains exactly 14 units, which is the whole UK weekly low-risk guideline in one bottle.
How many units are in 70cl of gin?
A 70cl bottle contains 26.25 units at 37.5%, 28 units at 40%, 30.1 units at 43%, and 32.9 units at 47%. Always check the ABV on the label, because two gins of the same bottle size can differ by several units.
How many units are in a gin and tonic?
Tonic adds volume but no alcohol, so the units in a gin and tonic come only from the gin. UK pubs pour spirits in 25 ml or 35 ml measures.
| Drink | Gin | 37.5% ABV | 40% ABV | 43% ABV |
|---|---|---|---|---|
| Single G&T (25 ml) | 25 ml | 0.9 | 1.0 | 1.1 |
| Single G&T (35 ml) | 35 ml | 1.3 | 1.4 | 1.5 |
| Double G&T (50 ml) | 50 ml | 1.9 | 2.0 | 2.2 |
| Double G&T (70 ml) | 70 ml | 2.6 | 2.8 | 3.0 |
| Home pour (about 60 ml) | 60 ml | 2.3 | 2.4 | 2.6 |
Large "copa" balloon glasses make home pours hard to judge. A glass full of ice and tonic can hide a 60 to 75 ml pour of gin, which is closer to a pub double than a single.
Pre-mixed gin and tonic cans
Ready-to-drink G&T cans are usually 250 ml at 5% to 7% ABV. A 250 ml can at 5% contains 1.25 units, and at 6.4% it contains 1.6 units. Most UK cans print units on the label.
The gin units formula
For any bottle or measure:
units = volume in ml × ABV ÷ 1,000
Example 1: a 70cl bottle at 40%
700 × 40 ÷ 1,000 = 28 units
Example 2: a 50 ml pour of 43% gin
50 × 43 ÷ 1,000 = 2.15, or about 2.2 units
Example 3: a 35cl bottle at 37.5%
350 × 37.5 ÷ 1,000 = 13.125, or about 13.1 units
The alcohol units calculator runs the same formula if you want to check a label or log several drinks at once. If you count in US standard drinks instead, the standard drink calculator converts the same pour.
Gin strengths explained
Products sold as gin in the UK and EU must be at least 37.5% ABV. Above that, strength depends on the style and the brand.
| Style | Typical ABV | Units per 70cl |
|---|---|---|
| Supermarket London dry gin | 37.5% | 26.3 |
| Standard premium gin | 40%–43% | 28.0–30.1 |
| Higher-strength craft gin | 45%–47% | 31.5–32.9 |
| Navy-strength gin | 57% | 39.9 |
| Gin liqueur | 20% | 14.0 |
Gin liqueurs, such as fruit or "pink" gin liqueurs, are often 20% ABV or less and cannot legally be called gin on their own. They contain fewer units than gin, but a 70cl bottle at 20% still holds 14 units.
How a bottle of gin fits into the weekly guideline
The UK Chief Medical Officers advise that, to keep health risks low, it is safest not to drink more than 14 units a week on a regular basis, spread over three or more days.
| Amount of gin (40%) | Units | Share of 14-unit guideline |
|---|---|---|
| One single G&T (25 ml) | 1.0 | 7% |
| One double G&T (50 ml) | 2.0 | 14% |
| A 35cl half bottle | 14.0 | 100% |
| A 70cl bottle | 28.0 | 200% |
Seven double gin and tonics across a week reach the full 14 units. A 70cl bottle finished in a week is double the guideline. If you want to cut down, see practical ways to reduce alcohol intake, and for the full picture across beer, wine, and spirits use the alcohol units chart.
Units do not measure impairment. Never use a units count to decide whether you are fit to drive.
Track your gin by measure
The most reliable way to keep count is to log each drink with its pour size and ABV as you have it. That matters most at home, where measures drift upward over an evening.
Alcohol Tracker° lets you log spirits by millilitres and ABV and keeps a running weekly units total. You can [see Alcohol Tracker° for iPhone and Apple Watch](/) if you want an easier way to track.
Frequently Asked Questions
How many units are in a 70cl bottle of gin?
A 70cl bottle contains 26.25 units at 37.5% ABV and 28 units at 40% ABV. Stronger gins at 43% contain about 30 units, and navy-strength gins at 57% contain about 40.
How many units are in a litre of gin?
A 1 litre bottle contains 37.5 units at 37.5% ABV, 40 units at 40%, and 43 units at 43%.
How many units are in a single gin and tonic?
A pub single of 25 ml gin at 40% contains 1 unit. A 35 ml single contains 1.4 units. Tonic adds no alcohol.
How many units are in a double gin?
A 50 ml double at 40% contains 2 units, and a 70 ml double (two 35 ml measures) contains 2.8 units.
Is gin stronger than vodka?
Both must be at least 37.5% ABV in the UK and EU, so standard bottles are similar. Many premium gins are bottled at 40% to 47%, so a 70cl bottle of gin often contains a few more units than a 37.5% supermarket vodka. Compare with how many units are in a bottle of vodka.
The quick answer
How many units are in a bottle of gin? A 70cl bottle at 37.5% contains 26.25 units, at 40% it contains 28, and at 43% it contains about 30. A 25 ml single gin and tonic at 40% is 1 unit. Multiply millilitres by ABV and divide by 1,000 for any other bottle or pour.
Sources: NHS alcohol units, UK Chief Medical Officers' low risk drinking guidelines, and EU spirit drinks regulation 2019/787.
Keep exploring
Use the calculator or continue with a related guide:
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