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Cups to Grams — Vegetable Oil
Converts us cup of vegetable oil to gram using its real density, not a generic volume factor. One us cup is 218 gram.
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In short
One us cup of vegetable oil is 218 gram. Going the other way, one gram is 0.004587156 us cup. That works out at 2 us cup = 436 gram and 4 = 872. The figure comes from vegetable oil weighing 218 g per US cup — a generic cups-to-grams converter assumes water and will give you the wrong answer here, because volume to weight depends entirely on what is in the cup.
How to use the Cups to Grams — Vegetable Oil
- Type the value you want to convert.
- Pick the unit you are converting from and the unit you want.
- The converted value and the exact conversion factor are shown instantly.
About the Cups to Grams — Vegetable Oil
Oil is less dense than water, so a cup weighs about 18 g less. It is also the ingredient people most often mis-substitute by volume when swapping butter for oil — the correct swap is by weight, and even then oil produces a moister, denser crumb because it stays liquid at room temperature. Olive, sunflower and rapeseed oils all sit within a few grams of each other per cup. The figure this page works from is 218 g per US cup, the spooned-and-levelled weight recorded by King Arthur Baking and the USDA food database. Converting us cup to gram for vegetable oil, the amounts that come up most often are: 1/4 us cup = 54.5 gram; 1/3 us cup = 72.7 gram; 1/2 us cup = 109 gram; 2/3 us cup = 145 gram; 3/4 us cup = 164 gram; 1 us cup = 218 gram; 1 1/2 us cup = 327 gram; 2 us cup = 436 gram; 3 us cup = 654 gram.
What people use it for
- Following a US recipe with a kitchen scale instead of cup measures.
- Scaling a recipe up or down without compounding measuring error.
- Converting a European recipe written in grams into cups.
Details
| 1 US cup of vegetable oil | 218 g |
|---|---|
| 1 US cup | 218 Gram |
| 1 Gram | 0.004587156 US cup |
| Worth knowing | Olive, sunflower and rapeseed oils all sit within a few grams of each other per cup. |
The maths behind it
This tool uses gram = us cup × 218, derived from vegetable oil weighing 218 g per US cup. Every intermediate value is shown on screen, so the result can be checked by hand.
Oil is less dense than water, so a cup weighs about 18 g less. It is also the ingredient people most often mis-substitute by volume when swapping butter for oil — the correct swap is by weight, and even then oil produces a moister, denser crumb because it stays liquid at room temperature.
Where this tool stops
Volume-to-weight conversion is inherently approximate. Humidity, brand, how finely something is milled and how long it has sat in the cupboard all shift the figure by a few per cent.
Frequently asked questions
Can I swap butter for oil in a cake?
By weight, using about 80% as much oil as butter, because butter is roughly 80% fat and 15% water. Cakes made with oil stay moist longer but lose the flavour and the aerated structure that creaming butter provides.
Why does a cup of vegetable oil not weigh the same as a cup of water?
Because a cup measures volume and a scale measures weight, and the two only agree for water. Vegetable oil has its own density — 218 g per US cup — so any generic volume converter gives the wrong answer here.
How much does the way I fill the cup matter?
Not at all. Oil is a liquid, so it finds its own level and cannot be compacted, packed or aerated — a cup is a cup at 218 g every time. The only real error with oil is reading the measuring jug from above rather than at eye level, which is worth a few millilitres and nothing more.
Is a US cup the same as a UK or metric cup?
No. A US cup is 236.6 ml, a metric cup is 250 ml and an old UK cup is 284 ml. These pages use the US cup, because that is what US recipes mean.
Is the Cups to Grams — Vegetable Oil free?
Free, unlimited, and no email address required. You can use it a hundred times a day and nothing changes.
Is my data uploaded anywhere?
No. The Cups to Grams — Vegetable Oil runs entirely in your browser using JavaScript. Because the work happens locally, the utility also keeps working if your connection drops, and closing the tab is all it takes to discard everything.
How is the result calculated?
It uses gram = us cup × 218, derived from vegetable oil weighing 218 g per US cup. The full working is printed under the result, so you can follow every step rather than trusting a black box.
What do I get if I try it?
Enter 2 us cup of vegetable oil and the Cups to Grams — Vegetable Oil returns 436 gram.
What is the Cups to Grams — Vegetable Oil used for?
The jobs it is built for: following a US recipe with a kitchen scale instead of cup measures. Scaling a recipe up or down without compounding measuring error. Converting a European recipe written in grams into cups. It is built for exactly those cases rather than being a general-purpose tool with this bolted on.
Where does the Cups to Grams — Vegetable Oil stop being reliable?
Volume-to-weight conversion is inherently approximate. Humidity, brand, how finely something is milled and how long it has sat in the cupboard all shift the figure by a few per cent. Knowing where a tool stops being trustworthy matters more than the cases where it works.
What are the key numbers for the Cups to Grams — Vegetable Oil?
1 US cup of vegetable oil is 218 g. 1 US cup is 218 Gram. 1 Gram is 0.004587156 US cup. These are printed on the page itself, so you do not have to take them on trust.
Is the number rounded?
The calculation runs in double precision and the result is shown to ten significant figures, so converting a value and converting it back returns the original. What is displayed is rounded for readability; what is copied is not.
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