Ingredient Weight Converter · fat
Vegetable Oil: cups to grams
1 cup of vegetable oil weighs 218 grams. Use the converter below for any other amount, or check the quick-reference table.
By Andrew Flores, Editor and publisher, Nathan Management. Last reviewed .
Density source: USDA FoodData Central, cross-checked against the King Arthur Baking weight chart. How these figures are derived and corrected is documented in our editorial standards.
Vegetable Oil baseline: 1 cup = 218 g.
Common amounts
| Cups | Tablespoons | Grams | Ounces (weight) | Milliliters |
|---|---|---|---|---|
| 1/4 cup | 4.0 | 55 g | 1.92 oz | 59 mL |
| 1/3 cup | 5.3 | 73 g | 2.56 oz | 79 mL |
| 1/2 cup | 8.0 | 109 g | 3.84 oz | 118 mL |
| 2/3 cup | 10.7 | 145 g | 5.13 oz | 158 mL |
| 3/4 cup | 12.0 | 164 g | 5.77 oz | 177 mL |
| 1 cup | 16.0 | 218 g | 7.69 oz | 237 mL |
| 1.5 cups | 24.0 | 327 g | 11.53 oz | 355 mL |
| 2 cups | 32.0 | 436 g | 15.38 oz | 473 mL |
| 3 cups | 48.0 | 654 g | 23.07 oz | 710 mL |
| 4 cups | 64.0 | 872 g | 30.76 oz | 946 mL |
Spoon weights
Derived from the same 218 g per cup — a US tablespoon is 1/16 of a cup and a teaspoon is 1/48.
| Amount | Grams |
|---|---|
| 1 tablespoon | 14 g |
| 1 teaspoon | 4.5 g |
| 1/2 teaspoon | 2.3 g |
| 1/4 teaspoon | 1.1 g |
Vegetable Oil at a glance
- Smoke point
- about 400–450 °F for refined canola, soybean, and sunflower — high enough for any home frying
- No water
- Oil is 100% fat; butter is about 80%. That is the whole reason the swap ratio is 3/4
- Aeration
- Oil cannot be creamed. A recipe that beats sugar into fat for lift will not work with oil
What a cup of vegetable oil actually weighs
The published 218 g assumes one specific way of filling the cup. Here is what the same cup weighs under the other common handling methods and product forms, and how far off the recipe you end up.
| How it was measured | Grams per cup | vs. published | Why |
|---|---|---|---|
| Any refined neutral oil, measured in a liquid cup | 218 g | published figure | Canola, soybean, sunflower, safflower and generic 'vegetable oil' blends all land within about 2 g of each other. |
Why measuring vegetable oil by cup goes wrong
Neutral vegetable oils — canola, sunflower, refined safflower, soybean — all weigh within 2 grams of each other at about 218 grams per cup. They behave the same in baked goods: more tender crumb than butter (no water content to evaporate), less flavor, slightly heavier mouthfeel.
Practical tips for working with vegetable oil
Oil-based cakes stay moist longer than butter-based cakes because oil stays liquid at room temperature while butter solidifies. That's a meaningful win for a birthday cake that needs to look good two days after baking. Carrot cake, banana bread, and many chocolate cakes lean on oil for exactly this reason.
Note from this ingredient's record: Neutral oils (canola, sunflower, refined sunflower) all hover within 2 g per cup. Cold-pressed oils that smell strongly of seed are not neutral and will flavor a cake.
Substitutions that work — and what they cost you
Melted butter for oil
Ratio: 1 1/4 cups melted butter per 1 cup oil
Trade-off: Butter is about 80% fat, so you need more of it to deliver the same fat. Adds flavor and browning; the cake will firm up more in the fridge.
Unsweetened applesauce for oil
Ratio: Replace up to half the oil, 1:1
Trade-off: Cuts fat and adds pectin and water. The crumb gets springier and more bread-like, and it stales faster. Replacing all of it makes a gummy cake.
When vegetable oil ruins the recipe
| What you see | What went wrong | What to do |
|---|---|---|
| Cake tastes faintly of fish or crayons | Rancid oil. Polyunsaturated oils oxidize on the shelf, especially in clear bottles. | Smell the oil before you pour. Buy bottles you will finish in a few months and keep them out of the light. |
| Fried food is greasy rather than crisp | Oil temperature dropped below about 325 °F when the food went in, so the crust never set and the food absorbed oil instead of repelling it. | Use a thermometer, fry in small batches, and let the oil recover between them. |
Storing vegetable oil
Cool, dark, sealed. Heat and light are what turn oil rancid — the cabinet next to the stove is the worst place in the kitchen for it.
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