The short answer: A standard unopened tuna can weighs about 140 to 170 grams (5 to 6 ounces), with the drained fish inside weighing somewhat less.
Tuna can weight by type
A tuna can's stated weight can mean the whole can, the net contents, or just the drained fish. Here are common sizes.
| Type (example) | Typical weight |
|---|---|
| Small single-serve can | About 80-100 g (2.8-3.5 oz) |
| Standard can (net) | About 140-170 g (5-6 oz) |
| Standard can (drained fish) | About 100-130 g (3.5-4.6 oz) |
| Large family can | About 185-200 g (6.5-7 oz) |
| Bulk/catering can | About 1 kg+ (2.2 lb+) |
What affects tuna can weight
- Can size. Single-serve, standard, and family cans hold different amounts of fish.
- Net vs. drained. Labeled net weight includes liquid, while drained weight is just the fish.
- Packing liquid. Tuna in oil weighs a little more than tuna packed in water or brine.
- Can material. The empty steel or aluminum can itself adds roughly 20 to 30 grams.
- Tuna type. Solid white albacore and chunk light tuna are packed to different targets.
- Brand. Different producers fill cans to slightly different net weights.
How tuna can weight compares
A standard tuna can weighs about the same as a medium orange or a baseball.
Frequently asked questions
How much tuna is in a standard can after draining?
After draining, a standard 5 to 6 ounce can usually yields about 100 to 130 grams (3.5 to 4.6 ounces) of fish. The rest of the labeled weight is packing liquid.
How much does an empty tuna can weigh?
An empty standard tuna can weighs roughly 20 to 30 grams (about 1 ounce). The exact figure depends on whether it is steel or aluminum.
Is tuna in oil heavier than tuna in water?
Slightly. Oil-packed cans tend to weigh a touch more, but the drained fish weight is similar between the two.
