Buttermilk: Grams to Cups
1 cup of buttermilk = 245 grams
One US cup of buttermilk weighs 245 grams. One 250 ml metric cup — the one used in the UK, Australia, New Zealand and Canada — holds 259 grams. To convert any weight, divide the grams by the figure for your cup.
Buttermilk weighs 245 g per cup (USDA FoodData Central); King Arthur Baking rounds it to 227 g. A homemade substitute — 1 tablespoon of lemon juice or vinegar topped up to 1 cup with milk — weighs about the same.
Where the 245 g figure comes from
- USDA FoodData Central: 1 cup of “Milk, buttermilk, fluid, whole” = 245 g (FDC ID 172225)
- King Arthur Baking ingredient weight chart: Buttermilk, 1 cup = 227 g (chart)
This site uses 245 g per US cup of buttermilk, spooned and levelled. References checked September 2026.
How many cups is X grams of buttermilk?
| Grams | US cups | Metric cups | Tablespoons | Ounces |
|---|---|---|---|---|
| 25 g buttermilk | ⅛ | ⅛ | 1.63 | 0.88 |
| 50 g buttermilk | ¼ | ¼ | 3.27 | 1.76 |
| 75 g buttermilk | ⅓ | ¼ | 4.9 | 2.65 |
| 100 g buttermilk | ⅜ | ⅜ | 6.53 | 3.53 |
| 110 g buttermilk | ½ | ⅜ | 7.18 | 3.88 |
| 120 g buttermilk | ½ | ½ | 7.84 | 4.23 |
| 125 g buttermilk | ½ | ½ | 8.16 | 4.41 |
| 130 g buttermilk | ½ | ½ | 8.49 | 4.59 |
| 140 g buttermilk | ⅝ | ½ | 9.14 | 4.94 |
| 150 g buttermilk | ⅝ | ⅝ | 9.8 | 5.29 |
| 170 g buttermilk | ⅔ | ⅔ | 11.1 | 6.00 |
| 175 g buttermilk | ¾ | ⅔ | 11.43 | 6.17 |
| 200 g buttermilk | ⅞ | ¾ | 13.06 | 7.05 |
| 225 g buttermilk | ⅞ | ⅞ | 14.69 | 7.94 |
| 240 g buttermilk | 1 | ⅞ | 15.67 | 8.47 |
| 250 g buttermilk | 1 | 1 | 16.33 | 8.82 |
| 275 g buttermilk | 1⅛ | 1.06 | 17.96 | 9.70 |
| 300 g buttermilk | 1¼ | 1⅛ | 19.59 | 10.58 |
| 350 g buttermilk | 1⅜ | 1⅓ | 22.86 | 12.35 |
| 400 g buttermilk | 1⅝ | 1½ | 26.12 | 14.11 |
| 450 g buttermilk | 1⅞ | 1¾ | 29.39 | 15.87 |
| 500 g buttermilk | 2.04 | 1⅞ | 32.65 | 17.64 |
How to measure buttermilk accurately
The 245 g figure assumes the spooned-and-levelled method: spoon the buttermilk into a dry measuring cup and sweep the top flat with a straight edge. Scooping the cup through the bag compacts it and gives a heavier cup.
- 1 US cup of buttermilk = 245 g
- 1 metric cup (250 ml) of buttermilk = 259 g
- ¾ cup = 184 g
- ½ cup = 123 g
- ⅓ cup = 82 g
- ¼ cup = 61 g
- 1 tablespoon = 15.3 g
Frequently asked questions
How many cups is 100 grams of buttermilk?
100 grams of buttermilk is about ⅜ US cups, based on 245 g per cup, or ⅜ metric cups.
How many grams in a cup of buttermilk?
One US cup of buttermilk weighs 245 grams. A 250 ml metric cup holds 259 grams.
How many cups is 250 grams of buttermilk?
250 grams of buttermilk is about 1 US cups, or 1 metric cups.
Does a UK cup of buttermilk weigh the same as a US cup?
No. A UK, Australian or Canadian metric cup is 250 ml against the US 236.6 ml, so it holds about 5.7% more — 259 g of buttermilk rather than 245 g.
How many tablespoons is 100 grams of buttermilk?
100 grams of buttermilk is about 6.53 tablespoons.
More liquids conversions: Yogurt (plain) grams to cups.