How Much Onion Powder Equals One Onion? Conversion Table

November 10, 2023

 In the world of cooking, onions are a staple ingredient, adding flavor, depth, and aroma to countless dishes. However, there are times when using fresh onions may not be practical or convenient. That’s where onion powder comes in as a versatile and flavorful substitute.

Onion powder is a dehydrated and ground form of onion commonly used as a seasoning in cooking. It has a strong, pungent flavor and aroma similar to fresh onions but is much more concentrated and has a longer shelf life. It’s better to know the right amount when using onion powder instead of onion because adding more powder can intensify the flavor and make the recipe bitter.

But how much onion powder do you need to replace one fresh onion? This guide will provide a comprehensive conversion table and detailed explanations of how much onion powder equals one onion to help you master the art of onion powder substitution. 

What is Onion Powder

As said above, onion powder is a finely ground seasoning made from dehydrated onions. It is a convenient and long-lasting way to add onion flavor to your dishes without the hassle of chopping and peeling fresh onions. Onion powder is concentrated, so a small amount can enhance the flavor of soups, stews, sauces, marinades, and even dry rubs. It is a key ingredient in seasoned salt and spice mixes, such as Old Bay seasoning and ranch dressing.

Onion powder is made by thinly slicing onions and then drying them in a low oven or dehydrator. The dried onions are then ground into a fine powder. Onion powder can be made from white, yellow, or red onions, but white onions are the most common type because they have a milder flavor.

How Much Onion Powder Equals One Onion?

The general rule of thumb is that 1 tablespoon of onion powder is equal to one medium onion. However, the exact amount of onion powder you will need will vary depending on the size and type of onion and the desired level of onion flavor. 

If you want a more intense onion flavor, use up to 1½ teaspoons of onion powder per medium onion. However, remember that too much onion powder can make your dish taste bitter.

Onion Powder Conversion Table

Here is a table that shows the equivalent amount of onion powder for different amounts of fresh onion:

Onion SizeChopped OnionMinced OnionOnion Powder
Medium1/2 cup1/4 cup1 tablespoon
Large3/4 cup1/3 cup1 1/2 tablespoons
Small1/4 cup2 tablespoons1 teaspoon

Onion to Onion Powder Conversion Ratio

The conversion ratio between fresh onions and onion powder is approximately 6:1. This means that it takes about 6 parts of fresh onion to equal 1 part of onion powder.

For example, if a recipe calls for 1/2 cup of chopped onions, you can substitute 1 tablespoon of onion powder. However, if you want a stronger onion flavor, you may want to use 1½ tablespoons of onion powder.


Onion powder is a versatile and flavorful substitute for fresh onions. With this conversion table and detailed explanations, you can easily incorporate onion powder into your recipes and enjoy its convenience and consistent flavor. Remember to adjust the amount of onion powder based on your taste preferences and the specific recipe.


 1 tablespoon of onion powder equals 1/4 cup of minced onion. 

 1/4 cup of dried onion flakes or minced dried onion equals one medium onion. 

You can substitute 1/2 teaspoon of dried onion flakes or minced dried onion for 1 teaspoon of onion powder. 

Onion powder is a good substitute for fresh onions in many dishes. However, fresh onions have a different texture or aroma. Use fresh onions instead of onion powder if you want a strong flavor. 

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