Milk: Cups to Grams Converter
1 cup (cup) equals 242 grams (g).
Quick answer
One US cup of milk weighs about 242 grams. Multiply cups by 242: ½ cup ≈ 121 g, ¼ cup ≈ 60.5 g.
- 1 cup = 242 grams
- 1 gram = 0.004132231405 cups
- Formula: g = cup × 242
- Quick estimate: 1 cup ≈ 240 g, so ½ cup ≈ 120 g and ¼ cup ≈ 60 g.
1 cup = 242 grams
How to convert cups to grams
g = cup × 242
To convert cups to grams, multiply the number of cups by 242.
Example: 1.25 cup to g
- Start with the value in cups: 1.25 cup.
- Multiply by 242: 1.25 × 242 = 302.5.
- Result: 1.25 cups = 302.5 grams.
Going the other way, 1 gram = 0.004132231405 cups, so to convert grams back to cups you divide by the same number. See grams to cups.
Where the conversion factor comes from
Cups and spoons measure volume, while grams measure weight, so there is no single cups-to-grams factor: it depends on how dense the ingredient is. Whole cow's milk is slightly denser than water. By standard baking reference weights, one level US cup (236.6 mL) of milk weighs about 242 g (8.54 oz), or 1.02 g per milliliter.
Measure in a liquid measuring cup at eye level.
Mental math: cup to g in your head
Round to 240 g per cup and scale: 1½ cups ≈ 360 g, ⅓ cup ≈ 80 g. For baking where precision matters, use the chart below.
When you need to convert cups to grams
- Weighing milk for a US recipe on a kitchen scale, which is faster and more consistent than cups.
- Scaling a recipe up or down.
- Milk is used in cakes, pancakes, sauces and custards.
Common mistakes
- Using another ingredient's figure: a cup of milk is about 242 g, but a cup of water is 237 g and a cup of all-purpose flour 120 g.
- Mixing cup sizes: a 250 mL metric cup (Australia, Canada, NZ) holds about 256 g of milk, 5.7% more than a US cup.
- Scooping straight from the bag or packing the cup when the recipe does not say "packed": it can add 10–25% more.
Everyday cups in grams
| Example | Cups | Grams |
|---|---|---|
| ⅛ cup | 0.125 cup | 30.25 g |
| ¼ cup | 0.25 cup | 60.5 g |
| ⅓ cup | 0.33333333 cup | 80.667 g |
| ½ cup | 0.5 cup | 121 g |
| ⅔ cup | 0.66666667 cup | 161.33 g |
| ¾ cup | 0.75 cup | 181.5 g |
| 1 cup | 1 cup | 242 g |
| 1½ cups | 1.5 cup | 363 g |
| 2 cups | 2 cup | 484 g |
| 3 cups | 3 cup | 726 g |
Cups to grams conversion table
What is a cup?
A US cup of milk weighs about 242 grams (8.54 oz).
What is a gram?
Weighing milk in grams is the most accurate way to bake: one US cup is about 242 g.
Convert cups to other units
Convert other units to grams
Frequently asked questions
How many grams are in a cup?
One cup is 242 grams.
How many cups are in a gram?
One gram is 0.004132231405 cups.
What is the formula to convert cups to grams?
g = cup × 242.
How many grams is ½ cup of milk?
About 121 g.
How many grams is ¼ cup of milk?
About 60.5 g.
How many grams is ⅓ cup of milk?
About 80.7 g.