A 100-gram boiled potato has about 87 calories; one medium potato (≈170 g) lands near 118 calories.
Calories
Carbs
Potassium
Basic Prep
- Boil in lightly salted water
- Leave skins for fiber
- Pair with lean protein
Everyday
Better For Calories
- Steam or boil, no added fat
- Cool, then reheat for resistant starch
- Herbs, not butter
Light
Best For Satiety
- Keep skins on
- Add non-starchy veg
- Include protein source
Balanced
Calories In A Boiled Potato By Size
Calorie count is tied to weight. Water content shifts a little with variety and cooking time, but the range you’ll see below holds up in home kitchens. These values use lab-sourced entries for plain, cooked potatoes with no added fat.
| Portion | Typical Weight | Calories (Plain, Boiled) |
|---|---|---|
| Per 100 g | 100 g | ≈ 87 kcal |
| Small Potato | 120 g | ≈ 105 kcal |
| Medium Potato (2½″ dia.) | 170 g | ≈ 118 kcal |
| Large Potato | 225 g | ≈ 195 kcal |
| ½ Cup Cubes | 78 g | ≈ 67 kcal |
| 1 Cup Cubes | 156 g | ≈ 134 kcal |
Those figures reflect plain tubers simmered in water until tender and drained. Leaving the skins on nudges fiber and potassium upward with almost no change in energy. If you’re mapping meals to a target intake, setting your daily calorie needs first makes portions easier to plan.
What Changes The Number On The Plate
Two factors move the needle: weight and add-ins. The flesh itself sits near 87 kcal per 100 g. Salt doesn’t add energy, but dairy, oil, and butter do. A tablespoon of butter brings ~100 kcal. A splash of olive oil adds ~120 kcal per tablespoon. That’s why mashed potatoes or smashed potatoes can climb quickly when cream and fat go in.
Texture and temperature matter too. Cooling cooked potatoes and serving them chilled, or reheating them after chilling, increases resistant starch. That swap lowers digestible carbs per bite and can make the dish steadier for blood sugar compared with eating the same batch piping hot.
Carb Profile, Protein, And Micronutrients
Most of the energy comes from starch with a pinch of natural sugars. Protein lands around 2 g per 100 g, and fat is almost negligible before add-ins. A plain boiled potato is also a tidy source of potassium and vitamin C. In the UK, public guidance tags potatoes as a starchy food that supplies energy, fiber, B vitamins, potassium, and some vitamin C in the diet, even though they don’t count toward fruit-and-veg portions. That’s straight from NHS starchy foods.
Close Variant: Calories In Boiled Potatoes With Or Without Skin
Peel or no peel? Skins add bulk and minerals, but the energy stays near the same. A medium potato boiled in its jacket and then peeled after cooking tends to clock in around the same 110–120 kcal range simply because the weight is similar. Eat the skins and you’ll pick up more fiber for essentially the same energy per gram.
Serving Ideas That Keep Calories In Check
- Steam or boil and toss with chopped parsley, lemon, and garlic.
- Use yogurt or a spoon of cottage cheese instead of cream for mashing.
- Dress warm wedges with vinegar and mustard for punch without added fat.
How This Compares To Other Prep Styles
Boiling and steaming don’t add fat. Baking stays lean too, as long as the spud isn’t loaded with butter or cheese. Frying and deep-frying alter the picture since oil soaks in. For blood sugar, potato dishes carry a higher glycemic load when portions grow large or when lots of fat is added. Harvard’s Nutrition Source on potatoes outlines why preparation and context matter for steady energy.
| Cooking Method | Reference Portion | Typical Calories |
|---|---|---|
| Boiled (plain) | 100 g | ≈ 87 kcal |
| Steamed (plain) | 100 g | ≈ 87–90 kcal |
| Baked (no toppings) | 180 g (medium) | ≈ 160–170 kcal |
| Mashed (milk, light) | 200 g | ≈ 180–220 kcal |
| Mashed (butter, rich) | 200 g | ≈ 260–320 kcal |
| French Fries | 100 g | ≈ 280–320 kcal |
Portion Control Made Simple
Weigh once, then eyeball. If the kitchen scale reads 150–175 g for your usual side, you’re in the 110–130 kcal band with plain boiled potatoes. If you often serve a heaping cup and a half, you’re closer to 200 kcal before any toppings. That’s handy when you plan a plate around protein and vegetables.
How Much Fits Into A Meal
For active days or long walks, a larger serving offers steady energy. Rest days might call for the ½-cup scoop. Anchoring the plate with greens and a protein keeps portions satisfying even when the serving is modest.
Glycemic Load And The Cooling Trick
Cooling cooked potatoes in the fridge and serving them as a salad—or reheating after a chill—lets some starch retrograde into resistant starch. That swap trims digestible carbs per bite. It won’t slash calories, but it can soften the post-meal spike. It’s a neat tactic when you enjoy spuds with grilled fish or chicken.
Nutrition Quick Facts You Can Use
Macros Per 100 g (Plain, Boiled)
- Carbohydrate: ~20 g
- Protein: ~2 g
- Fat: ~0.1 g
- Water: ~78 g
Minerals And Vitamins
- Potassium lands around 400–500 mg per 100 g.
- Vitamin C sits near 7–12 mg per 100 g, lower after long cooking and higher with the skin.
- Small amounts of B6, magnesium, and iron show up too.
Practical Ways To Keep Calories Steady
Season Bold, Not Heavy
Lean on acid and herbs—vinegar, lemon, dill, chives, paprika. Flavors pop without the butter tax.
Build A Balanced Plate
Pair a scoop with lean protein and a pile of non-starchy vegetables. The combo stretches satiety while calories stay predictable.
Pick Your Fat With Purpose
If you add oil, measure it. A teaspoon brings ~40 kcal, and a tablespoon brings three times that. Drizzle, don’t pour.
Frequently Missed Details
Salted Water Isn’t A Calorie Issue
Seasoning water helps flavor. It doesn’t change energy. If sodium is on your radar, finish with herbs and citrus instead of shakers.
Skins Help With Fiber
Keep the skins when texture allows. You’ll add roughage and minerals while the energy number barely moves.
Sample Day With Potatoes That Fits Your Goals
Try a medium boiled potato beside grilled salmon and greens at dinner. You’ll get a tidy 110–130 kcal from the spud, solid protein from the fish, and color from the veg. If you like a lunch salad, fold in cooled potato cubes, green beans, a few olives, and an egg—bold flavor, steady energy.
Method, Sources, And Safe Ranges
Numbers here come from lab-based databases that compile measures per weight and common household portions. For boiled potatoes in cups and per potato sizes, entries from MyFoodData boiled potatoes reflect the same underlying USDA data used by many trackers. General health context on starches and preparation sits on the Harvard Nutrition Source. Values vary a little with variety, field conditions, and time in the pot, so treat the ranges as kitchen-ready guides, not exact math.
Wrap-Up And Next Steps
If you like spuds, keep them in the mix. The energy per 100 g is modest, and the dish stays lean when you skip heavy toppings. Season boldly, measure fats, and let the plate design do the rest.
Want a deeper primer on setting targets? Try our daily calorie guide, and for hydration, here’s a plain look at how much water you need.