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Potato, mashed — Cups to Grams

One US cup of mashed potato weighs about 213 grams. That makes it heavier than all-purpose flour, which is 120 grams per cup. Mashed potato packs dense — spoon it in and level the top without pressing further. Use the converter below to switch mashed potato between cups, grams, ounces, tablespoons and millilitres — or read the full chart underneath.

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Mashed potato conversion chart

Mashed potato — cups to grams chart
Cups	Grams	Ounces	Tablespoons	Millilitres
⅛ cup	26.63 g	0.939 oz	2	29.57 ml
¼ cup	53.25 g	1.88 oz	4	59.15 ml
⅓ cup	71 g	2.5 oz	5.33	78.86 ml
½ cup	106.5 g	3.76 oz	8	118.3 ml
⅔ cup	142 g	5.01 oz	10.67	157.7 ml
¾ cup	159.8 g	5.64 oz	12	177.4 ml
1 cup	213 g	7.51 oz	16	236.6 ml
1¼ cups	266.3 g	9.39 oz	20	295.7 ml
1½ cups	319.5 g	11.27 oz	24	354.9 ml
2 cups	426 g	15.03 oz	32	473.2 ml
3 cups	639 g	22.54 oz	48	709.8 ml

Grams to cups: mashed potato

Mashed potato — grams to cups chart
Grams	Cups	Ounces	Tablespoons
10 g	0.047	0.353 oz	0.751
25 g	0.117	0.882 oz	1.88
50 g	0.235	1.76 oz	3.76
75 g	0.352	2.65 oz	5.63
100 g	0.469	3.53 oz	7.51
125 g	0.587	4.41 oz	9.39
150 g	0.704	5.29 oz	11.27
200 g	0.939	7.05 oz	15.02
250 g	1.17	8.82 oz	18.78
300 g	1.41	10.58 oz	22.54
400 g	1.88	14.11 oz	30.05
500 g	2.35	17.64 oz	37.56

How to measure mashed potato

Mashed potato packs dense — spoon it in and level the top without pressing further.

Because a cup measures volume rather than weight, the most reliable way to measure mashed potato is with a digital kitchen scale. If you are working from cups, keep your technique consistent every time so your results are repeatable. For more, see our guide on baking by weight versus volume.

No scale yet? You don't need a fancy one; any digital kitchen scale that reads in 1-gram steps does everything on this site. Well-rated kitchen scales on Amazon →

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Substitutes for mashed potato

Equal mashed cauliflower (1:1) — drain thoroughly after cooking (iFoodReal)
Lower carb, neutral flavor that takes butter/garlic/cheese well. Cauliflower absorbs water like a sponge; pat dry before mashing or result will be runny.
Half cauliflower, half mashed potato (creamy hybrid) (iFoodReal)
Cauliflower lightens texture while potato preserves starchy body and binding.

See all mashed potato substitutes, ratios and sources →

Mashed potato conversions: FAQ

Why doesn't a cup of mashed potato weigh the same as a cup of water?

A cup measures volume, not weight. Mashed potato is less dense than water (213 g versus 237 g per cup), so the same volume has a different weight. Weighing in grams is the most accurate way to measure it.

Common mashed potato conversions

Quick-answer pages for the conversions people search for most.

100 g to cups

100 g mashed potato ≈ 0.469 cups

200 g to cups

200 g mashed potato ≈ 0.939 cups

250 g to cups

250 g mashed potato ≈ 1.17 cups

500 g to cups

500 g mashed potato ≈ 2.35 cups

¼ cup to grams

¼ cup mashed potato ≈ 53.25 g

½ cup to grams

½ cup mashed potato ≈ 106.5 g

1 cup to grams

1 cup mashed potato ≈ 213 g

2 cups to grams

2 cups mashed potato ≈ 426 g

Related converters

← All ingredient converters Cups to grams chart Recipe scaler

* Conversion figures are typical average weights for one US customary cup (236.6 ml), based on the King Arthur Baking Ingredient Weight Chart and cross-referenced with the U.S. Department of Agriculture FoodData Central database. Actual weight varies with packing, brand and humidity — see our methodology.