1 cup (210g) · home-prepared with whole milk and butter

Carbs and Calories in Mashed Potatoes

32.1gnet carbs in the stated serving

One 210g cup of home-prepared mashed potatoes made with whole milk and butter contains 35.3g total carbohydrate, 3.2g fiber, 32.1g net carbs, and 237 calories.

Nutrition facts

USDA values for home-prepared mashed potatoes with whole milk and butter; one cup is 210g.
Nutrient1 cup (210g)Per 100g
Calories237113
Total carbohydrate35.3g16.8g
Dietary fiber3.2g1.5g
Net carbs32.1g15.3g
Total sugars3.0g1.4g
Protein3.9g1.9g
Total fat8.9g4.2g

Serving and food-state notes

USDA lists one cup as 210g for this record. Measure the prepared mash after the milk and butter have been mixed in.

Recipes vary widely. More butter or cream raises fat and calories; extra liquid changes weight; gravy, cheese, garlic blends, and instant products require separate values.

Source: USDA FoodData Central, Potatoes, mashed, home-prepared, whole milk and butter added, SR Legacy FDC ID 168555. Accessed 2026-08-06. CheckTheCarbs scales the unrounded USDA values and rounds only for display. Read the methodology.

How this answer was calculated

For foods without sugar alcohols, this site uses net carbs = total carbohydrate − dietary fiber. “Net carbs” is a tracking convention, not a separate nutrient on the standard U.S. Nutrition Facts label.

Per 100g, the record contains 16.8g total carbohydrate and 1.5g fiber. Multiplying by 2.10 gives 35.3g total carbs and 3.2g fiber; the displayed difference is 32.1g net carbs.

Canonical related records

Frequently asked questions

How many carbs are in one cup of mashed potatoes?

For the USDA home-prepared recipe with whole milk and butter, one 210g cup has 35.3g total carbohydrate and 32.1g net carbs.

How many calories are in mashed potatoes?

This recipe state has 237 calories per 210g cup, or 113 calories per 100g.

Does this include gravy?

No. Gravy and other toppings must be added separately.

Why do instant or restaurant mashed potatoes differ?

Ingredients, water content, serving weight, and preparation differ. Use the package or restaurant's current nutrition data when available.