The short answer: The common octopus typically weighs between 3 and 10 kilograms (about 6.6 to 22 pounds), though weights vary enormously across species.
Octopus weight by type
Octopus weight ranges widely by species. Here are representative figures.
| Type (example) | Typical weight |
|---|---|
| Star-sucker pygmy octopus | Under 30 g (1 oz) |
| Common octopus | About 3 to 10 kg (6.6 to 22 lb) |
| Day octopus | About 2 to 5 kg (4.4 to 11 lb) |
| Giant Pacific octopus | About 15 to 50 kg (33 to 110 lb) |
What affects octopus weight
- Species. Octopuses range from a few grams to tens of kilograms.
- Age. They grow quickly over their relatively short lives.
- Diet. Abundant prey supports faster growth and greater size.
- Sex. In some species one sex grows larger than the other.
- Region. Local conditions affect typical adult size.
How octopus weight compares
A common octopus around 5 kg weighs roughly the same as a small house cat, while a giant Pacific octopus can match an adult human.
Frequently asked questions
What is the largest octopus species?
The giant Pacific octopus is the largest, commonly weighing 15 to 50 kilograms, with rare individuals reported much heavier.
How much does a common octopus weigh?
The common octopus typically weighs about 3 to 10 kilograms (6.6 to 22 pounds).
Do octopuses vary much in weight?
Yes, enormously. The smallest species weigh only a few grams, while the largest can exceed 50 kilograms.
