1/3 Cup Eggs in Grams
81 g — that is what 1/3 cup of eggs weighs, poured, per USDA. It sounds like a small detail, but in baking and in any recipe written in grams, it is the detail that decides whether the result matches the recipe writer's kitchen. Cups are convenient and grams are accurate, and this page bridges the two for eggs with a full table, practical examples, and the method notes that make the number trustworthy. Treat every figure here as approximate and check it against a scale when the stakes are high.
Why this number is worth knowing
Eggs shows up in recipes written both ways — cups in American cookbooks, grams in European ones — and translating between them is where most kitchen errors happen. Knowing that 1/3 cup of eggs is about 81 g means you can follow either kind of recipe without converting on the fly, and you can scale a recipe up or down without the rounding errors that creep in when you convert cup by cup. It also means you can compare recipes: if two recipes for the same dish call for very different amounts of eggs, the gram weights make the difference obvious in a way cups never do. Keep the table below bookmarked and the conversion becomes second nature.
Eggs cups to grams conversion table
| Cups | Grams | Tablespoons (approx.) |
|---|---|---|
| 1/4 cup | 60.8 g | 3.8 g |
| 1/3 cup | 81 g | 5.1 g |
| 1/2 cup | 121.5 g | 7.6 g |
| 2/3 cup | 162 g | 10.1 g |
| 3/4 cup | 182.2 g | 11.4 g |
| 1 cup | 243 g | 15.2 g |
| 1 1/2 cups | 364.5 g | 22.8 g |
| 2 cups | 486 g | 30.4 g |
| 3 cups | 729 g | 45.6 g |
| 4 cups | 972 g | 60.8 g |
The tablespoon column is a bonus for recipes that call for a spoonful or two: one tablespoon of eggs weighs about 15.2 g. Remember that a cup is 16 tablespoons, so the numbers in the table are just the cup weight divided by 16, rounded sensibly. For small amounts a scale that reads to the gram is far more reliable than a spoon, because a heaped tablespoon can weigh half as much again as a level one.
How the weight was measured
Poured means the ingredient was measured the way USDA measures it: poured into a liquid measuring jug and read at eye level at the meniscus. Liquids do not pack, so the main source of error is reading the jug from above or using a dry cup for a liquid measure. The source for the 243 g per cup figure is USDA, and the confidence in the value is medium. USDA publishes a standard ingredient weight chart that recipe developers use as a reference, and this page follows it exactly rather than averaging across sources, because an average of two different measuring methods is a number that matches nobody's cup.
Worked examples
Meal prep for the week
Cooking in bulk is where weighing earns its keep. A week of lunches built around 1/3 cup of eggs starts with 81 g measured once, and the portions come out identical across five containers. That consistency is what makes meal prep actually work instead of turning into five slightly different meals.
A dressing made in a jar
A jar dressing built on 1/3 cup of eggs needs 81 g. Put the ingredient in the jar first, add the rest, shake, and taste. Weighing the base ingredient means the ratio of the dressing is right before you season it, so the salt and acid you add are adjusting flavour, not fixing a broken ratio.
Doubling a casserole
Doubling a casserole that uses 1 cup of eggs means 1/3 cup, or 81 g. Casseroles are forgiving, but the liquid-to-solid ratio still decides whether the result is saucy or dry. Weigh the doubled amount and the larger dish behaves like the original.
Storing eggs so the conversion stays true
Refrigerate in the carton; use by the date on the box. Storage matters because the weight of a cup changes when the ingredient changes. Keep eggs in an airtight container in a cool, dry place, and the density stays close to the value on this page. Left open, eggs picks up moisture or dries out, and the cup weight drifts. Buy in sensible quantities, label the container with the date, and replace it when it is past its best. A stale ingredient does not just weigh differently — it tastes different too, and no conversion table can fix that.
Frequently asked questions
How many grams is 1/3 cup of eggs?
1/3 cup of eggs weighs approximately 81 g, measured poured. The figure comes from the USDA value of 243 g per cup. All weights on this page are approximate — verify with a kitchen scale when precision matters.
Does the brand of eggs change the weight?
It can, by a few grams per cup. Different brands mill, grind or process eggs slightly differently, and moisture content varies with storage. The USDA value of 243 g per cup is a standard reference, not a measurement of your specific packet — another reason to verify with a scale for important recipes.
What is the easiest way to weigh 1/3 cup of eggs?
Put your mixing bowl on a digital scale, press tare to zero it, and pour or spoon in eggs until the display reads 81 g. Add other dry ingredients on top, taring between each one, and you can measure a whole recipe in one bowl with no extra washing up.
Can I halve or double this amount?
Yes. Half of 1/3 cup of eggs is 40.5 g, and double is 162 g. Weighing makes scaling exact, whereas halving or doubling cups compounds measuring error. Scale the eggs by weight and adjust leavening and seasoning by taste rather than by a straight multiple.
How should I store eggs?
Refrigerate in the carton; use by the date on the box. Keeping it sealed and dry also keeps the cup weight close to the 243 g per cup value used on this page.
How many eggs is 1/3 cup?
One large egg weighs about 50 g, so 1/3 cup of beaten eggs at 81 g is roughly one and a half large eggs. In practice, crack two large eggs, beat them lightly, and measure out 1/3 cup, keeping the rest for another use — or use the whole two eggs if the recipe is forgiving, since a few extra grams of egg rarely hurt a batter. When a recipe is written in cups of eggs, it almost always means lightly beaten whole eggs, yolks and whites together, with no shells and no foam from over-whisking. Beat just until the yolk and white are combined and the mixture runs smoothly off a fork. If the eggs are cold from the fridge, let them sit in a bowl of warm water for five minutes first: cold eggs do not emulsify as well and can make a batter curdle. Crack each egg into a small bowl before adding it to the measuring jug, so a stray piece of shell or a bad egg never ruins the batch. For baking, room-temperature eggs whip to greater volume and blend more evenly into butter and sugar, which is why most recipes assume them.