3/4 Cup Vegetable Oil in Grams
3/4 cup of vegetable oil weighs 163.5 g (poured, USDA). Neutral-flavoured oil, usually a soybean or canola blend. All the figures on this page are approximate conversions based on the USDA value of 218 g per cup, so when a recipe really matters, verify with a kitchen scale.
It is used for frying, baking, dressings and mayonnaise. 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.
Why weighing 3/4 cup of vegetable oil beats measuring it in cups
Fat is the ingredient that decides whether a bake is tender or tough, flaky or dense, and 3/4 cup is an amount that appears in cakes, pastry, and roasting all the time. Weighing it matters because a cup is a poor way to measure a fat: solid fats trap air pockets when scooped, and liquid fats are hard to read in a measuring jug. A cup measure can be 10 g or more off, which is enough to change a cake from moist to greasy. Weighing removes that whole source of error, and it is faster than packing a cup and scraping it out.
Vegetable Oil cups to grams conversion table
| Cups | Grams (approx.) |
|---|---|
| 1/4 cup | 54.5 g |
| 1/3 cup | 72.7 g |
| 1/2 cup | 109 g |
| 2/3 cup | 145.3 g |
| 3/4 cup | 163.5 g |
| 1 cup | 218 g |
| 1 1/4 cups | 272.5 g |
| 1 1/2 cups | 327 g |
| 2 cups | 436 g |
| 3 cups | 654 g |
One tablespoon of vegetable oil weighs about 13.6 g, and one teaspoon about 4.5 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 163.5 g is the one to use when a recipe calls for 3/4 cup.
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 218 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.
USDA density (0.92 g/ml) gives 218 g per cup. The King Arthur chart lists 198 g for vegetable oil, which appears to be an error carried from a smaller measure; we use the USDA density value.
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.
Worked examples
A chocolate cake that uses oil instead of butter
An oil-based chocolate cake calling for 3/4 cup of vegetable oil needs 163.5 g. Oil cakes stay moist for days because liquid fat does not firm up as it cools, unlike butter, and that is why so many chocolate cake recipes choose oil. Weighing the oil into the bowl on a tared scale is faster than pouring it into a measuring jug and squinting at the line, and it keeps the batter ratio exact.
A big batch of mayonnaise
A mayonnaise recipe that starts with 3/4 cup of vegetable oil needs 163.5 g, and mayonnaise is an emulsion where the oil-to-egg ratio decides whether it thickens or splits. Adding the oil too fast is the usual cause of a split mayonnaise, but starting with the wrong amount of oil guarantees failure before you begin. Weighing 163.5 g first means the ratio is right and you can focus on drizzling slowly.
Roasting a tray of root vegetables
Roasting a large tray of root vegetables with 3/4 cup of vegetable oil takes 163.5 g. That sounds like a lot, but spread across two kilos of potatoes, carrots, and parsnips it is just enough to coat everything and crisp the edges. Weighing the oil keeps the vegetables from swimming in fat, and it keeps the calories honest when you are cooking for a crowd.
When this conversion matters most
This conversion matters most in baking and in emulsions, where the liquid-to-dry ratio has to be right. An oil cake with too much oil turns greasy and sinks in the middle; one with too little turns dry by the next day. In mayonnaise and dressings, the oil is the main ingredient by weight, so a 20 g error changes the texture outright. For everyday frying, the exact weight hardly matters, and pouring roughly 3/4 cup from the bottle is fine. The one number to remember is that vegetable oil is lighter than water: 3/4 cup weighs 163.5 g, not 177.8 g, because oil is less dense than water.
Common mistakes
The most common mistake is assuming a cup of oil weighs the same as a cup of water. It does not: water weighs 237 g per cup, while vegetable oil weighs 218 g, so 3/4 cup of oil is 163.5 g against 177.8 g of water. A second mistake is trusting the King Arthur chart figure of 198 g per cup for this oil, which appears to be an error carried from a smaller measure; the USDA density value of 218 g per cup is the reliable one. A third mistake is measuring oil in a dry measuring cup, where the curved surface makes the level hard to read; use a liquid jug or a scale instead.
If you do not have a kitchen scale, use the tablespoon as your measure: 3/4 cup is 12 level tablespoons, and counting them out is more accurate than filling a cup, because each spoonful is levelled individually. For dry ingredients, spoon the ingredient into the tablespoon and level it with a straight knife; for liquids, fill the spoon to the brim on a flat surface. It is slower than weighing, but it is far more reliable than a cup, and it will get you close enough for most recipes. For baking, though, a scale is worth buying: even a cheap one pays for itself the first time a cake comes out right.
Storage
Cool, dark cupboard; use within 6 months of opening. Neutral-flavoured oil, usually a soybean or canola blend. It is used for frying, baking, dressings and mayonnaise. 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 vegetable oil?
3/4 cup of vegetable oil weighs 163.5 g, poured, using the USDA value of 218 g per cup. The figure is approximate, so verify with a kitchen scale when the recipe matters, especially for baking and emulsions.
Why do some sources say 198 g per cup for vegetable oil?
The King Arthur Baking chart lists 198 g per cup for vegetable oil, which appears to be an error carried from a smaller measure. The USDA density of 0.92 g/ml gives 218 g per cup, which matches the density of other neutral oils, so we use the USDA value and 163.5 g for 3/4 cup.
How many tablespoons is 3/4 cup of vegetable oil?
3/4 cup is 12 tablespoons, and one tablespoon of vegetable oil weighs about 13.5 g. That gives roughly 163.5 g for the full 12 tablespoons. For baking, weighing the oil directly into the bowl is more accurate than counting spoonfuls.
Is 3/4 cup of vegetable oil the same weight as 3/4 cup of olive oil?
Almost, but not exactly: 3/4 cup of olive oil weighs 162 g, while vegetable oil weighs 163.5 g, because olive oil is very slightly less dense at 216 g per cup. The 1.5 g difference is too small to matter in any recipe, so the two swap freely by weight.
Can I measure vegetable oil in a dry measuring cup?
You can, but a liquid measuring jug or a kitchen scale is better. Oil clings to the cup and the curved meniscus makes the level hard to read, so a cup measure is often 5 to 10 g off. Weighing 163.5 g on a tared scale removes the guesswork entirely.