Egg Whites — Grams & Cups Converter
A US cup of egg whites weighs 243 g. Working back the other way, 100 g is about 3/8 cup and 250 g is about 1 cup. Use the calculator for any amount in between.
💡 Tip: One large egg white is about 30 g, or 2 tbsp. Handy when a recipe calls for a fraction of an egg or you're working from cartoned whites.
How many cups is a given weight of egg whites?
| Grams | Amount | Ounces |
|---|---|---|
| 50 | 1/4 cup | 1.76 |
| 100 | 3/8 cup | 3.53 |
| 113 | 1/2 cup | 3.99 |
| 150 | 5/8 cup | 5.29 |
| 170 | 2/3 cup | 6 |
| 200 | 7/8 cup | 7.05 |
| 225 | 7/8 cup | 7.94 |
| 250 | 1 cup | 8.82 |
| 300 | 1 1/4 cups | 10.6 |
| 400 | 1 2/3 cups | 14.1 |
| 500 | 2 cups | 17.6 |
How many egg whites make a cup
One large egg white weighs about 30 g, or 2 tablespoons, so it takes roughly 7–8 large whites to fill a cup (about 243 g). That's handy when you're baking from cartoned liquid whites or scaling a recipe up or down — instead of cracking and guessing, you can weigh to the exact amount. For meringues and angel food cake, weighing matters: too much or too little white throws off the structure.
| Amount | Large egg whites |
|---|---|
| 1 cup (≈243 g) | 7–8 whites |
| ½ cup (≈122 g) | about 4 whites |
| ¼ cup (≈61 g) | about 2 whites |
From cups to grams: egg whites
| Cups | Grams | Ounces |
|---|---|---|
| 1/4 | 60.8 | 2.14 |
| 1/3 | 81 | 2.86 |
| 1/2 | 122 | 4.29 |
| 2/3 | 162 | 5.71 |
| 3/4 | 182 | 6.43 |
| 1 | 243 | 8.57 |
| 1 1/4 | 304 | 10.7 |
| 1 1/2 | 365 | 12.9 |
| 2 | 486 | 17.1 |
There are 16 tablespoons in a cup, so one tablespoon of egg whites weighs roughly 15.2 g — and a teaspoon 5.06 g.
Where egg whites sits by weight
243 g per cup places egg whites in the middle of its category — lighter than buttermilk (245 g) and heavier than egg yolks (240 g).
Swapping these by the cupful is not like-for-like. A cup of buttermilk in place of egg whites puts roughly 2 g more in the bowl, so match the grams rather than the cups.
Questions people ask about egg whites
- How many cups is 100g of egg whites?
- Just over or under 3/8 cup, depending how firmly you fill the cup. 100 g ÷ 243 g per cup = 3/8 cup.
- How many egg whites make 1 cup?
- About 7–8 large egg whites, since each white is roughly 30 g.
- How much does one large egg white weigh?
- Around 30 g, or about 2 tablespoons.
- How many grams is 2 cups of egg whites?
- About 486 g, at roughly 243 g per cup.
- How many cups is 150g of egg whites?
- Around ⅝ of a cup, or about 5 large whites.
- Can I use cartoned egg whites instead of fresh?
- Yes — measure by weight or volume the same way; about 3 tablespoons of carton whites equals one large egg white.
- How many grams is 1 cup of egg whites?
- 1 US cup of egg whites weighs about 243 grams, or 8.57 ounces.
- How many grams is ½ cup of egg whites?
- Half a US cup of egg whites is about 122 grams.
- How many ounces is 1 cup of egg whites?
- 1 cup of egg whites is about 8.57 ounces by weight (243 g).