Conversor de Óleo para Manteiga
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
Formula
manteiga_g = óleo_g × 1,25
About this calculator
The Oil to Butter Converter is a practical tool for those who want to substitute vegetable oil with butter in recipes. The standard conversion used is 1 cup of oil to 1.25 cups of butter, which means multiplying the amount of oil in grams by 1.25 to get the equivalent amount of butter. This ratio accounts for the difference in density and fat content between the ingredients, ensuring the recipe's texture and flavor are preserved.
To use the calculator, simply enter the amount of vegetable oil required by the original recipe, in grams or cups, and the tool returns the corresponding amount of butter. It is useful in situations such as adapting vegan recipes to include dairy, adjusting diets, or simply when you run out of oil. Butter adds a richer flavor and firmer texture to cakes, cookies, and doughs, being a common substitution in baking.
Important considerations: butter is about 80% fat and 20% water, while oil is 100% fat. Therefore, the conversion is not exact in terms of volume; butter adds extra water, which can alter the recipe's moisture. It is recommended to slightly reduce other liquids or adjust baking time. Additionally, butter should be at room temperature for better incorporation. For recipes requiring neutral oil (like frying), butter is not ideal because it burns at lower temperatures.
This calculator is intended for baking and pastry recipes, such as cakes, muffins, breads, and cookies. It is not recommended for preparations that depend on high oil temperatures, like frying, or for recipes where butter flavor might conflict (e.g., savory Asian dishes). Always check the dough consistency after substitution and adjust as needed.
Frequently asked questions
Can I use salted butter instead of oil?
Yes, but adjust the salt in the recipe to compensate for the extra salt in the butter. Generally, use unsalted butter for better flavor control.
Does the conversion work for any type of vegetable oil?
Yes, the ratio is the same for oils like canola, sunflower, corn, or soybean. Strong-flavored oils (like olive oil) may alter the taste.
Do I need to melt the butter before using?
It depends on the recipe. For cakes and cookies, use butter at room temperature and creamed. For liquid recipes, melt and let it cool.
How does the texture change with this substitution?
Butter tends to make the dough firmer and slightly denser. Cookies may become crispier, and cakes moister due to the water content in butter.
Can I substitute oil with butter for frying?
Not recommended. Butter burns at lower temperatures (smoke point ~150°C) and can burn, altering the flavor. Use vegetable oil for frying.