Mashed Potatoes Calories & Carbs
Last updated September 8, 2026 · Compiled by the CarbMeNot Team
Values per 1 cup (prepared with milk and butter), 210g; per 100 g: 15.3g net carbs, 113 cal. Net carbs = total carbs − fiber − sugar alcohols — do the math for any label with the free net carbs calculator.
How many carbs are in mashed potatoes?
Mashed Potatoes — 1 cup (prepared with milk and butter), 210g — has 32.1g net carbs: 35.1g total carbs minus 2.9g fiber, plus 4g protein, 9g fat, and 237 calories. Per 100g that is 15.3g net carbs (16.7g total carbs, 1.4g fiber) and 113 calories. That makes mashed potatoes moderate in net carbs and about average for the typical vegetable, which averages about 17.9g net carbs per 100g. At this carb count, mashed potatoes is best limited to small portions on keto (usually 20–50g net carbs per day). Values are per 100 g, sourced from Manufacturer-reported values; net carbs are computed by CarbMeNot.
Is mashed potatoes keto-friendly?
Mashed Potatoes is generally not keto-friendly. 1 cup (prepared with milk and butter), 210g is 32.1g net carbs (35.1g total carbs − 2.9g fiber); per 100g that is 15.3g net carbs. On a standard keto diet (20–50g net carbs per day), even one serving uses a large share of your daily carbs, so keep portions small or save it for a higher-carb day.
Keeping an eye on carbs in mashed potatoes?
Mashed Potatoes runs higher in carbs, so portions matter. CarbMeNot tracks every gram from a photo, so you stay under your daily limit without the math.
Carbs by serving size
| Serving | Net carbs | Total carbs | Protein | Calories |
|---|---|---|---|---|
| 1 cup (prepared with milk and butter) | 32.1g | 35.1g | 4g | 237 |
| 100 g (3.5 oz) | 15.3g | 16.7g | 1.9g | 113 |
| 1 oz (28 g) | 4.3g | 4.7g | 0.5g | 32 |
How many calories are in mashed potatoes?
Mashed Potatoes — 1 cup (prepared with milk and butter), 210g — has 237 calories, with 4g protein, 9g fat, and 32.1g net carbs. Per 100g: 113 calories and 15.3g net carbs.
Nutrition facts
| Nutrient | Amount (per 100 g) |
|---|---|
| Calories | 113 |
| Total carbs | 16.7g |
| Net carbs | 15.3g |
| Fiber | 1.4g |
| Sugar | 1.4g |
| Sugar alcohols | 0g |
| Protein | 1.9g |
| Fat | 4.3g |
| Sodium | 317mg |
| Potassium | 286mg |
Source: Manufacturer-reported values (vegetables). Net carbs = total carbs − fiber − sugar alcohols, computed by CarbMeNot.
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Frequently asked questions
- How many carbs are in mashed potatoes?
- Mashed Potatoes (1 cup (prepared with milk and butter), 210g) has 35.1g of total carbs and 32.1g of net carbs. Per 100 grams: 16.7g total, 15.3g net.
- How many net carbs are in mashed potatoes?
- Mashed Potatoes has 32.1g of net carbs per 1 cup (prepared with milk and butter), 210g — 35.1g total carbs minus 2.9g fiber.
- Is mashed potatoes keto-friendly?
- Mashed Potatoes is generally not keto-friendly. 1 cup (prepared with milk and butter), 210g is 32.1g net carbs (35.1g total carbs − 2.9g fiber); per 100g that is 15.3g net carbs. On a standard keto diet (20–50g net carbs per day), even one serving uses a large share of your daily carbs, so keep portions small or save it for a higher-carb day.
- How many calories are in mashed potatoes?
- Mashed Potatoes (1 cup (prepared with milk and butter), 210g) has 237 calories; that is 113 calories per 100 grams.
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CarbMeNot provides general nutrition information, not medical advice. Values are estimates — verify before relying on them for any health decision. See our Medical Disclaimer.