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Buttermilk — Cups to Grams

One US cup of buttermilk weighs about 240 grams. That makes it heavier than all-purpose flour, which is 120 grams per cup. Buttermilk weighs about the same as regular milk per cup. Use the converter below to switch buttermilk between cups, grams, ounces, tablespoons and millilitres — or read the full chart underneath.

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Buttermilk conversion chart

Buttermilk — cups to grams chart
Cups	Grams	Ounces	Tablespoons	Millilitres
⅛ cup	30 g	1.06 oz	2	29.57 ml
¼ cup	60 g	2.12 oz	4	59.15 ml
⅓ cup	80 g	2.82 oz	5.33	78.86 ml
½ cup	120 g	4.23 oz	8	118.3 ml
⅔ cup	160 g	5.64 oz	10.67	157.7 ml
¾ cup	180 g	6.35 oz	12	177.4 ml
1 cup	240 g	8.47 oz	16	236.6 ml
1¼ cups	300 g	10.58 oz	20	295.7 ml
1½ cups	360 g	12.7 oz	24	354.9 ml
2 cups	480 g	16.93 oz	32	473.2 ml
3 cups	720 g	25.4 oz	48	709.8 ml

Grams to cups: buttermilk

Buttermilk — grams to cups chart
Grams	Cups	Ounces	Tablespoons
10 g	0.042	0.353 oz	0.667
25 g	0.104	0.882 oz	1.67
50 g	0.208	1.76 oz	3.33
75 g	0.313	2.65 oz	5
100 g	0.417	3.53 oz	6.67
125 g	0.521	4.41 oz	8.33
150 g	0.625	5.29 oz	10
200 g	0.833	7.05 oz	13.33
250 g	1.04	8.82 oz	16.67
300 g	1.25	10.58 oz	20
400 g	1.67	14.11 oz	26.67
500 g	2.08	17.64 oz	33.33

How to measure buttermilk

Buttermilk weighs about the same as regular milk per cup.

Because a cup measures volume rather than weight, the most reliable way to measure buttermilk 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 buttermilk

1 tbsp lemon juice or white vinegar + milk to fill 1 cup; rest 5–15 minutes until slightly thickened (King Arthur Baking)
⅓ cup Greek yogurt + ⅔ cup milk, whisked smooth (King Arthur Baking)
King Arthur tested this as the best-performing buttermilk substitute in pancakes, biscuits, and cakes — it brings real tang and richness, not just acid.

See all buttermilk substitutes, ratios and sources →

Compare buttermilk

Buttermilk vs Milk

Buttermilk conversions: FAQ

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

A cup measures volume, not weight. Buttermilk is denser than water (240 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 buttermilk conversions

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

100 g to cups

100 g buttermilk ≈ 0.417 cups

200 g to cups

200 g buttermilk ≈ 0.833 cups

250 g to cups

250 g buttermilk ≈ 1.04 cups

500 g to cups

500 g buttermilk ≈ 2.08 cups

¼ cup to grams

¼ cup buttermilk ≈ 60 g

½ cup to grams

½ cup buttermilk ≈ 120 g

1 cup to grams

1 cup buttermilk ≈ 240 g

2 cups to grams

2 cups buttermilk ≈ 480 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.