How to Convert Butter to Oil in Baking — Butter to Oil Ratio
While preparing baked goods, one might feel tempted to change up the recipe and do a vegetable oil to butter conversion — or the other way around. There are several reasons you might do this swap: being vegan, having bad cholesterol results, or looking for the perfect taste. The oil to butter conversion calculator makes this substitution simple and accurate.
Butter vs. Oil: What's the Difference?
| Property | Butter | Liquid Cooking Oil |
|---|---|---|
| Flavor | Rich buttery flavor | More neutral; every oil adds its own taste |
| Texture in baking | Lighter, helps cake rise by trapping air | Denser result — no air bubbles formed |
| Richness | Both affect richness equally | Both affect richness equally |
| Tenderness | More tender result | Still quite tender, like all fats |
| Health | Contains saturated fat and cholesterol | Often more heart-friendly options available |
The Oil to Butter Ratio: 3:4
The rule is simple: use an oil to butter ratio of 3:4. This means that for every three parts of oil (e.g., 3 tablespoons), you need four equal parts of butter (4 tablespoons). Conversely, to convert butter to oil, multiply the butter amount by 3/4 (0.75).
This ratio applies to both weight (grams, ounces) and volume (cups, tablespoons, ml) measurements, since butter and liquid vegetable oils have similar densities.
Vegetable Oil to Butter Conversion Chart
| Liquid Vegetable Oil | Butter |
|---|---|
| ¾ teaspoon | 1 teaspoon |
| ¾ tablespoon | 1 tablespoon |
| 3 tablespoons | ¼ cup |
| ¾ cup | 1 cup |
| 6 tablespoons (~93.75 ml) | 1 stick of butter (½ cup) |
| 187.5 g | 250 g |
Butter to Oil Grams Conversion Example
Let's see what a 250 g of butter to oil conversion looks like:
- Liquid cooking oil: 187.5 g (or approx. 204 ml)
- Coconut oil: 200 g (or approx. 188 ml)
Using our butter to oil calculator, we know that 250 g of butter ≈ 274 ml of butter. If you wish to switch this amount to coconut oil, you should use exactly 188 ml of coconut oil.
How to Use the Oil to Butter Conversion Calculator
- Select the conversion direction — choose whether you have butter and want to find the oil equivalent, or vice versa.
- Enter the amount — type in the quantity you want to convert.
- Choose a unit — pick from metric (g, kg, ml, L) or American (sticks, cups, tablespoons, oz, lb) units.
- Select your measurement system — metric or American, for displaying results.
- Click Convert — the calculator instantly shows you the equivalent amount in both weight and volume, plus the coconut oil conversion.
Note: This calculator applies to liquid cooking oil only. Coconut oil has a different fat and water content from regular butter, so its conversion is handled separately in the results panel.
American vs. Metric Measurement Units
This calculator supports both measurement systems used in kitchens worldwide:
- American (Imperial): sticks, cups, tablespoons (tbsp), teaspoons (tsp), fluid ounces (fl oz), ounces (oz), pounds (lb)
- Metric: grams (g), kilograms (kg), milliliters (ml), liters (L)
Quick reference: 1 US stick of butter = ½ cup = 8 tbsp ≈ 113 g. Use 6 tablespoons of liquid oil to substitute for one stick of butter.
Coconut Oil Conversion: A Special Case
Be careful when converting butter to coconut oil! Unlike liquid vegetable oil, coconut oil is solid below approximately 24°C (76°F), which means its density and behavior in baking differ from standard liquid oils. The conversion ratios are:
- By weight: use 80% of the butter weight in coconut oil (e.g., 250 g butter → 200 g coconut oil)
- By volume: use about 68% of the butter volume in coconut oil (e.g., 277 ml butter → 188 ml coconut oil)
Always use melted coconut oil when a recipe calls for volume measurements to get accurate results.
FAQs
- How much butter is ½ cup of oil?
- ½ cup of liquid cooking oil equals approximately ⅔ cup of butter. The oil-to-butter ratio is 3:4, so multiply the oil amount by 4/3: ½ × 4/3 = 2/3 cup of butter.
- How much vegetable oil equals one stick of butter?
- One stick of butter (½ cup = 8 tbsp ≈ 113 g) equals about 6 tablespoons (≈ 93.75 ml) of liquid vegetable oil. Multiply the butter volume by ¾ to get the oil volume.
- Is it better to cook with butter or oil?
- It depends on what you're making. Butter adds rich flavor and helps baked goods rise, while oil keeps baked goods moist and dense. For frying, avoid oils with unstable fatty acids (like linseed oil) and consider using clarified butter to raise the smoke point.
- Can I substitute coconut oil for butter at a 1:1 ratio?
- No — coconut oil and butter have different fat contents and densities. Use the Coconut Oil Conversion section in the calculator for accurate substitution amounts.
- Does the 3:4 ratio work for all types of cooking oil?
- Yes, this ratio works for any liquid cooking oil (vegetable, canola, sunflower, olive, etc.). Coconut oil requires a different ratio because it behaves differently in baking.