3/4 Cup Lemon Juice in Grams
3/4 cup of lemon juice weighs 183 g (poured, USDA). Freshly squeezed lemon juice, sharp and acidic. All the figures on this page are approximate conversions based on the USDA value of 244 g per cup, so when a recipe really matters, verify with a kitchen scale.
It is used for dressings, marinades, baking and drinks. That range of uses is part of why the conversion comes up so often: the same ingredient appears in everyday cooking and in precise baking, and the two situations demand different levels of accuracy. Knowing the weight of 3/4 cup, rather than guessing from a measuring cup, keeps the result consistent no matter which recipe you are following, and it lets you scale a recipe up or down without the errors multiplying.
How the weight was measured
Poured is the method used for this ingredient, and it matters because the same cup can hold a different weight depending on how it was filled. Spooned and levelled means spooning the ingredient into the cup and levelling the top with a straight knife, without packing it down. Packed means pressing the ingredient firmly into the cup until it holds its shape. Poured means pouring a liquid into a measuring jug up to the line. Scooped means pushing the cup through a solid fat and levelling the top.
The source for the 244 g per cup figure is USDA, and this page follows that value exactly rather than averaging across sources, because an average of two different measuring methods is a number that matches nobody's cup.
All the figures on this page are approximate conversions. When a recipe really matters, verify with a kitchen scale: weigh the ingredient directly into the bowl on a tared scale and trust that number over any cup.
Lemon Juice cups to grams conversion table
| Cups | Grams (approx.) |
|---|---|
| 1/4 cup | 61 g |
| 1/3 cup | 81.3 g |
| 1/2 cup | 122 g |
| 2/3 cup | 162.7 g |
| 3/4 cup | 183 g |
| 1 cup | 244 g |
| 1 1/4 cups | 305 g |
| 1 1/2 cups | 366 g |
| 2 cups | 488 g |
| 3 cups | 732 g |
One tablespoon of lemon juice weighs about 15.2 g, and one teaspoon about 5.1 g. Three quarters of a cup is 12 tablespoons, and it occupies about 177 ml by volume, the same as 3/4 cup of anything, because volume does not change from one ingredient to the next. Only the weight changes, and that is why the table above is organised by weight rather than volume. The table is rounded to the nearest tenth of a gram where the fraction demands it, so the numbers are approximate by design; the 3/4 cup figure of 183 g is the one to use when a recipe calls for 3/4 cup.
When this conversion matters most
This conversion matters most in baking and dressings, where lemon juice is both a flavouring and an acid. In a cake, its acid activates baking soda and its flavour has to balance the sugar, so the amount has to be right. In a vinaigrette, the acid-to-oil ratio decides whether the dressing is bright or greasy. Lemon juice weighs 244 g per cup, so 3/4 cup is 183 g, the same as milk by weight. For drinks, the exact weight is irrelevant. One practical point: fresh lemons vary enormously in how much juice they give, so weigh the juice rather than counting lemons, and expect about two to three lemons per 3/4 cup.
Worked examples
A lemon drizzle cake for afternoon tea
A lemon drizzle cake calling for 3/4 cup of lemon juice needs 183 g, split between the batter and the drizzle topping. The juice gives the cake its sharp flavour and its acidity helps the baking powder work, so the amount has to be right. Weighing 183 g matters because lemons vary in size and juiciness, and counting lemons instead of weighing the juice can leave you 20 g short or over.
A vinaigrette for a big salad
A vinaigrette that uses 3/4 cup of lemon juice needs 183 g, whisked with three times as much olive oil. The acid-to-oil ratio is what makes a dressing bright instead of greasy, so the weight matters. Weighing the juice first, then adding the oil slowly, keeps the emulsion balanced for a salad that has to feed a dozen people.
A marinade for a whole chicken
A marinade for a whole chicken that calls for 3/4 cup of lemon juice needs 183 g, mixed with olive oil, garlic, and herbs. The acid tenderises the skin and carries flavour into the meat, but too much acid left too long will start to cook the surface and make it mushy. Weighing 183 g keeps the marinade ratio right, and marinating for two hours rather than overnight keeps the texture firm.
Common mistakes
The most common mistake is counting lemons instead of weighing the juice. A large juicy lemon gives about 45 g of juice, while a small dry one gives 25 g, so three lemons can give anywhere from 75 g to 135 g. A second mistake is using bottled lemon juice in a recipe where fresh matters: bottled juice tastes flat and can be bitter. A third mistake is marinating fish or chicken in lemon juice for too long, where the acid starts to cook the surface and makes the texture mushy.
If you do not have a kitchen scale, measure with tablespoons instead of a cup: 3/4 cup is 12 level tablespoons, and levelling each spoonful separately keeps the total far closer to the true weight than a single cup measure. For thick ingredients like sour cream or cream cheese, press the spoonful in firmly and level the top; for liquids, fill the spoon on a flat surface. This method works well for cooking, where a few grams either way do not matter, but for baking, a scale is the better investment: it removes the guesswork entirely and makes every recipe repeatable.
Why weighing 3/4 cup of lemon juice beats measuring it in cups
Liquid is the ingredient that sets the hydration of a recipe, and 3/4 cup is an amount that appears in cakes, dressings, and braises all the time. Weighing it matters because a measuring jug is easy to misread: the curved surface of the liquid makes the level hard to see, and reading it from above makes it look lower than it is. A jug measure can be 10 g or more off, which is enough to change a batter from thick to thin. Weighing removes that whole source of error, and it is faster than pouring, checking, and pouring again.
Storage
Refrigerate fresh juice; use within 1 week. Freshly squeezed lemon juice, sharp and acidic. It is used for dressings, marinades, baking and drinks. Knowing how the ingredient is stored matters for the conversion too: an ingredient that has absorbed moisture or dried out will weigh differently per cup, so store it properly and weigh it fresh for the best results.
Frequently asked questions
How many grams is 3/4 cup of lemon juice?
3/4 cup of lemon juice weighs 183 g, poured, using the USDA value of 244 g per cup. The figure is approximate, so verify with a kitchen scale when the recipe matters, especially for baking and dressings.
How many lemons make 3/4 cup of juice?
About two to three lemons, depending on their size and juiciness. A large juicy lemon gives about 45 g of juice, so 183 g needs roughly four lemons if they are small, or two to three if they are large. Weigh the juice rather than counting lemons.
How many tablespoons is 3/4 cup of lemon juice?
3/4 cup is 12 tablespoons, and one tablespoon of lemon juice weighs about 15 g. That gives roughly 183 g for the full 12 tablespoons. Weighing the juice into a jug on the scale is the most accurate method.
Can I use bottled lemon juice instead of fresh?
You can, and the weight is the same at 183 g for 3/4 cup, but the flavour is flatter and sometimes bitter. For a dressing or a marinade it is fine; for a lemon drizzle cake or a curd, where lemon is the star, fresh juice is worth the effort.
Does lemon juice activate baking soda?
Yes. Lemon juice is acidic, so it reacts with baking soda to release carbon dioxide and lift the batter. That is why recipes that use lemon juice often specify baking soda rather than baking powder, and why the 183 g amount matters for the rise.