The short answer: A plum typically weighs about 50 to 80 grams (1.8 to 2.8 ounces). As a small stone fruit, its pit makes up a larger share of the weight than in bigger fruits.
Plum weight by type
Plum weight varies by variety, with small dessert plums on the light end and large Japanese types on the heavier end.
| Type (example) | Typical weight |
|---|---|
| Small (damson, mirabelle) | 20 to 40 g (0.7 to 1.4 oz) |
| Medium (European / prune plum) | 50 to 70 g (1.8 to 2.5 oz) |
| Large (Japanese, black plum) | 70 to 100 g (2.5 to 3.5 oz) |
| Pit (stone) alone | roughly 2 to 5 g (0.07 to 0.18 oz) |
What affects plum weight
- Variety. Tiny damsons and mirabelles weigh much less than large Japanese plums.
- Pit size. The stone is inedible and accounts for a noticeable share of small plums.
- Ripeness. Ripe plums hold more juice and feel slightly heavier.
- Growing conditions. Thinning and irrigation affect how large each fruit grows.
- Water content. Fresh plums weigh far more than dried prunes of the same fruit.
How plum weight compares
A medium plum weighs about the same as a golf ball, or roughly as much as a large chicken egg.
Frequently asked questions
How many plums are in a pound?
With a medium plum weighing about 50 to 80 grams, you typically get around six to nine plums per pound (454 grams).
How much does a prune weigh?
A dried prune weighs much less than a fresh plum, usually about 8 to 12 grams, because most of the water has been removed.
How heavy is a plum pit?
A plum stone typically weighs about 2 to 5 grams, which is a larger fraction of total weight than the pit in bigger stone fruits.
