A small 80-gram fresh plum has about 30 calories, a medium 130- to 150-gram plum has roughly 40 to 50, and a 170-gram large plum has about 55 to 60. You get a practical answer by using the fruit’s weight and edible flesh.
This guide breaks down plum calories by size and weight, offers practical portion estimates without a scale, and explains why fresh, peeled, and dried varieties differ.
A Whole Plum’s Calorie Range
A whole plum rarely matches the serving weight used in a nutrition database. USDA FoodData Central entries can list a serving as a set number of grams, while your fruit may weigh less or more. Weighing the fruit in your hand gives you a more personal starting point.
Fresh plum contains water, natural sugar, dietary fiber, and vitamin C. Its energy comes mainly from the edible flesh, so a heavier plum usually carries more calories. Water content and fruit density can shift the result slightly.
| Fruit size | Approximate weight | Estimated calories |
|---|---|---|
| Small plum | 80 grams | 28 to 30 calories |
| Medium plum | 130 to 150 grams | 40 to 50 calories |
| Large plum | 170 grams | 55 to 60 calories |
Your best starting point is weight, not the word “medium.” A medium label can describe a 130-gram fruit in one basket and a 160-gram fruit in another. Check the package or record the weight when your calorie target leaves little room for error.
Those figures work as rounded everyday values rather than laboratory measurements. A plum with more edible flesh has more room to contribute energy, while water-rich fruit can differ a little from the table.
How Plum Size Changes the Estimate
Two plums can look similar in diameter yet differ in weight because of variety, ripeness, and shape. A sugar plum may be small but dense, while a larger European-type plum can hold more juice and flesh. The same 35 to 40 calories per 100 grams gives you a practical range, not a perfect laboratory value.
Heavier fruit does not always have the same calorie density as lighter fruit. A juicy plum may weigh a lot while contributing fewer calories than a smaller, denser piece. Even with that difference, plum size remains a useful everyday signal.
| Example | Weight | Estimated energy |
|---|---|---|
| Small fresh plum | 80 grams, or 2.8 ounces | About 30 calories |
| Medium fresh plum | 140 grams, or 4.9 ounces | About 49 calories |
| Large fresh plum | 170 grams, or 6.0 ounces | About 58 calories |
Varieties affect sweetness, fiber, and water. A ripe black plum can taste sweeter than a firm red plum, yet sweetness alone does not reveal the calorie total. Weigh the fruit when variety, ripeness, and size make a visual estimate uncertain.
Weight Offers the Most Reliable Conversion
A simple baseline of 35 to 40 calories per 100 grams works well for fresh plum. Multiply your plum’s weight by 0.35 to 0.40. At 140 grams, you get about 49 to 56 calories, so 50 calories is a sensible rounded estimate.
For ounces, multiply the weight by 0.035. A 5-ounce plum, equal to about 142 grams, lands near 50 calories. That lets you compare a fruit with a packaged serving listed in ounces or with a kitchen measurement you already know.
| Measurement | Fresh plum equivalent | Calorie estimate |
|---|---|---|
| 1 ounce | 28.35 grams | About 10 to 11 calories |
| 4 ounces | 113 grams | About 40 to 45 calories |
| 1 cup sliced | About 140 grams | About 49 to 56 calories |
Keep the unit separate from the fruit count. One cup of sliced plums is a weight-based portion, not a promise of two plums. Your count changes with fruit diameter, slicing waste, and whether the recipe includes only pitted pieces.
Estimating Without a Kitchen Scale
A small plum often fits in your palm and weighs about 80 grams. A medium plum is closer to 130 to 150 grams, while a large one can reach 170 grams or more. These are visual anchors rather than firm size rules, especially with elongated varieties.
Use a familiar household object only as a rough guide. A plum that feels heavy for its diameter may weigh more than a round fruit of similar width. A kitchen scale gives you a stronger estimate: weigh a bag of fruit, then divide the total by the number of plums inside.
A Worked Estimate
Suppose you eat a 145-gram plum, slice it, and add it to plain yogurt. At 0.38 calories per gram, the fruit contributes about 55 calories. The yogurt’s label adds its own calories, so count the plum once and the yogurt once.
Eating the same plum whole produces the same fruit calories. Slicing changes handling and serving size, not the fruit’s total energy. Your total changes only when you eat less than the whole fruit, add another food, or include a sweetened ingredient.
When no scale is available, recognizing those differences also prevents a fresh portion from being compared with a concentrated dried one.
- Use palm size: A palm-sized fresh plum often falls near the medium range of 40 to 50 calories.
- Weigh a batch: Divide the total weight of several plums by the number of fruits for a stronger estimate.
- Check a slice: Compare the fruit with a measured cup, but remember that volume does not always match weight.
- Track edible flesh: The pit is not eaten, so estimate calories from the flesh left after pitting.
Fresh, Peeled, and Dried Plums Are Not Interchangeable
Fresh plum and dried plum differ because removing water concentrates the fruit’s natural sugar. A small dried piece can provide more calories than the same weight of fresh fruit. A fresh plum sweetened with added sugar creates another separate issue, because the label’s total includes that sweetener.
Peeling changes little about total energy. The skin contains fiber, though, so keeping it can add fiber and change the texture. You can peel a plum for taste or texture without treating it like a dried fruit serving.
| Form | Water and sugar | Calorie handling |
|---|---|---|
| Fresh whole plum | High water content | Estimate by fresh-fruit weight |
| Fresh peeled plum | Water remains | Count close to the whole-fruit value |
| Dried plum | Water is removed | Use the package’s stated serving size |
| Sweetened fresh plum | Added sugar increases energy | Read the product label for the portion eaten |
Fresh plum nutrition facts vary by variety, but dried fruit deserves its own label check. A handful of dried pieces is not a serving of fresh fruit.
You also need to separate natural sugar from total calories. One fresh plum can hold about 8 to 10 grams of natural sugar, depending on size and variety, and roughly 1 to 2 grams of fiber. USDA FoodData Central tracks these nutrients, while Nutritionix, MyFitnessPal, and Cronometer offer reference values for a tracked entry.
Choosing a Practical Calorie Estimate
Use 40 to 50 calories as your everyday figure for one medium fresh plum. Adjust upward for a 170-gram fruit and downward for a small 80-gram fruit. Your estimate becomes more accurate when you weigh the edible portion rather than guessing from the label “medium.”
You can add that number to a snack total without counting a sliced portion twice. One whole plum used in oatmeal remains one fruit serving. A cup of sliced plums is a separate portion only when you eat the full measured cup or combine it with another ingredient.
- Start small: Record 30 calories for an 80-gram plum and 50 for a 140-gram fruit.
- Adjust upward: Use about 60 calories for a large plum near 170 grams.
- Measure batches: Weigh several fruits at once, then divide by the number of plums.
- Check labels: Use the stated serving weight for dried, canned, or sweetened plums.
- Watch recipes: Count the fruit once, then add yogurt, granola, syrup, or other ingredients separately.
Precision becomes more useful when the fruit belongs to a regulated nutrition plan, a diabetes meal, or a tightly counted daily total. In those settings, weigh the fruit and consult the package label, FoodData Central, or a current USDA record for the variety you buy.
For general tracking, 40 to 50 calories for a medium fresh plum is enough. For a very large, unusually dense, or processed plum, the extra weighing step protects your food log from a misleading shortcut.
For weight management, fresh plum can fit into a snack or meal because it contributes fruit, water, fiber, and natural sugar in a small fresh portion. Your total still depends on the portion, accompaniments, and the rest of the meal, so count yogurt, granola, syrup, or other additions separately.
Bottom Line
Weight gives you the clearest answer: a small fresh plum has about 30 calories, a medium one about 40 to 50, and a large one about 55 to 60. Use 50 calories for an everyday medium-plum estimate, then adjust for measured weight, variety, form, and anything added in a recipe.
FAQ
How many calories are in a plum?
At about 80 grams, a small fresh plum contains roughly 30 calories. A medium 130- to 150-gram plum has roughly 40 to 50, while a 170-gram large plum has about 55 to 60.
How many calories are in a medium-sized plum?
Weighing 130 to 150 grams, a medium fresh plum contains about 40 to 50 calories. A 140-gram fruit sits near the middle of that range, making 50 calories a useful everyday estimate.
How many calories are in a medium plum?
That plum weighing about 130 to 150 grams contains roughly 40 to 50 calories. A 140-gram fruit sits near the middle of that range, so 50 calories is a useful everyday estimate for your food log.
How many calories are in a large plum?
At approximately 170 grams, a large fresh plum contains roughly 55 to 60 calories. Its extra size adds calories, although variety and water content can shift the number slightly from fruit to fruit.
Does the size of a plum change its calorie count?
Yes. Plum size changes calorie count because a heavier fruit usually has more edible flesh. Variety and water content can shift the density, but weight remains the most useful everyday measure.
Do plum sizes change the calorie count?
That. Plum size changes calorie count because a heavier fruit has more edible flesh. The increase is not perfectly linear because varieties differ in density, water, natural sugar, and fiber, but weight remains the most useful everyday measure.
