Straight answer: a full standard 12 fl oz (355ml) aluminum can of beer weighs about 369 to 370 grams (roughly 13 ounces), and the empty can itself accounts for only about 13 to 15 grams of that, under 4% of the total weight. Almost the entire weight is the beer.
The Full Weight Breakdown
| Component | Weight |
|---|---|
| Empty 12 fl oz aluminum can | 13 to 15 grams (0.46 to 0.53 oz) |
| Beer inside (355ml) | roughly 355 to 357 grams |
| Full 12 fl oz can, total | 369 to 370 grams (13 to 13.05 oz) |
That works out close to a 1:1 relationship between the volume of beer in milliliters and its weight in grams, which makes sense since beer is mostly water and water is defined as 1 gram per milliliter. Beer’s slightly lower density than pure water (from dissolved alcohol and carbonation) and slightly higher density (from residual sugars) mostly cancel out, so a 355ml can of beer weighs close enough to 355 grams for any practical purpose, like estimating shipping weight or checking a kitchen scale reading.
How Weight Changes by Can Size
| Can size | Volume | Approx. empty can weight | Approx. full can weight |
|---|---|---|---|
| Slim / short | 8 fl oz (237ml) | 11 to 13.5g | roughly 250g |
| Standard | 12 fl oz (355ml) | 13 to 15g | 369 to 370g |
| Tallboy | 16 fl oz (473ml) | 16 to 18.5g | roughly 490g |
| Big can | 24 fl oz (710ml) | 21 to 24g | roughly 730g |
The can itself scales up only slightly with size, since a bigger can needs marginally more aluminum for its larger surface area, but the beer inside scales up proportionally with volume, which is why the can’s share of the total weight barely changes across sizes, it stays in that same rough 3 to 4% range regardless of whether you’re holding an 8oz or a 24oz can.
Why Cans Got So Much Lighter Over Time
A modern 12oz aluminum can weighs about a third less than cans from the 1970s, the result of decades of “light-weighting”: thinner wall gauges (now around 0.25 to 0.33mm), improved aluminum alloys (3004 or 3104 for the body, 5182 for the easy-open end), and manufacturing tolerances tight enough to hold pressurized, carbonated beer without using any more metal than necessary. Since breweries and can manufacturers buy aluminum by weight and ship finished product by weight, shaving even half a gram off billions of cans a year adds up to a meaningful cost and environmental difference.
FAQ
How much does a full 12 oz can of beer weigh?
About 369 to 370 grams (roughly 13 ounces), with the empty can itself weighing only 13 to 15 grams of that total.
How much does an empty beer can weigh?
A standard empty 12 fl oz aluminum can weighs about 13 to 15 grams, depending on the manufacturer and can design.
Does the type of beer affect the can’s weight?
Only very slightly. Differences in a beer’s density from alcohol and sugar content are small enough to be practically unnoticeable in the overall weight.
Why are modern beer cans lighter than older ones?
Decades of thinner aluminum wall gauges and improved alloys have reduced can weight by roughly a third compared to cans from the 1970s, without sacrificing the can’s ability to hold pressurized beer.
More Beer Facts and Guides
- How Long Is Beer Good for in a Can? A Real Shelf Life Timeline
- How Long to Chill Beer in the Freezer (and What Happens If You Forget)
- How Beer Is Made: From Grain to Glass, Explained
