The short answer: Most adult dolphins weigh about 150 to 650 kg (330 to 1,430 lb), depending on the species, though some are much smaller or larger.
Dolphin weight by type
Weight varies considerably by species. Here are typical adult examples.
| Type (example) | Typical weight |
|---|---|
| Maui / Hector's dolphin | About 40 to 60 kg (88 to 132 lb) |
| Common dolphin | About 80 to 150 kg (175 to 330 lb) |
| Bottlenose dolphin | About 150 to 650 kg (330 to 1,430 lb) |
| Orca (largest dolphin) | About 2,500 to 6,000 kg (5,500 to 13,200 lb) |
What affects dolphin weight
- Species. Orcas, the largest dolphins, far outweigh smaller species.
- Sex. Males are typically larger than females.
- Region. Cold-water populations tend to be bigger.
- Age. Dolphins reach full size over several years.
- Diet. Prey availability affects body condition.
How dolphin weight compares
A bottlenose dolphin weighs about as much as a large refrigerator, while an orca can weigh as much as several cars.
Frequently asked questions
How much does a dolphin weigh on average?
Most common dolphins weigh between 150 and 650 kg, though the figure varies widely by species.
Is an orca really a dolphin?
Yes, the orca is the largest member of the dolphin family, weighing several metric tons.
What is the smallest dolphin?
Maui and Hector's dolphins are among the smallest, weighing only about 40 to 60 kg.
