How Much Does a Coffee Bean Weigh?

How much does a coffee bean weigh? You’re probably wondering why anyone would like to know. Knowing how much a coffee bean weighs can help you the amount of caffeine in a bean or help you determine whether a particular type of coffee is ripe or past its prime. You may even find that knowing your beans’ weight will help you better understand their flavors and aromas.

How Much Does a Coffee Bean Weigh?

The average coffee bean weighs between 1/2 and 3/4 of an ounce, although some individual varieties can weigh less or more. Coffee beans come from different origins and are grown in different climates, which causes their weights to vary. For example, Brazilian beans are smaller than most other beans because they grow on the Atlantic coast, where water is more acidic.

A top view of grind coffee bean placed on a white bowl being weighed on a black weighing scale

The weight of a bean depends on:

  • The roasting process
  • Amount of moisture in it
  • How it was packaged

The Roasting Process

The roasting process breaks down some of the proteins and fats in beans, which means that the final product will weigh less than the original beans.

A study result shows that the roasting process leads to a 14.43 % and 17.15 % weight loss for light roasts and medium to dark roasts, respectively.

The amount of protein lost during roasting depends on how long you roast your beans and what kind of bean you use.


Fresh beans weigh more than roasted ones because of the moisture content in the green bean.

The moisture percentage varies depending on where it was grown and how long it was allowed to dry after harvest before being roasted or processed into other coffee products such as ground coffee or espresso shots.

Coffee Packaging

The packaging that your coffee comes in can affect its weight. The paper or plastic used to package your coffee affects how much it weighs because it adds material.

In general, heavier packaging means that there will be less weight inside the package than lighter packaging would have had inside the same space.

What Are the Benefits of Knowing a Coffee Bean’s Weight?

Knowing the weight of a coffee bean is important for two types of people: those buying coffee and those trying to make a good cup of Joe from scratch.


The weight of your bean can impact its taste as well as its price. Some coffees are more expensive because they are heavier, while others are lighter. For example, Colombian Supremo beans weigh 1 gram per bean and cost $2 per pound.

On the other hand, an American Blend bean weighs about 12 grams per bean and costs only $1.75 per pound, so if you’re interested in experimenting with different roasts or brewing methods, knowing what kind of beans weigh is important!

Home Brew

Knowing the weight will allow you to calculate how many cups of coffee are in your bag if you’re buying whole beans.

It’s also handy for those who want to make their own blends. You can use the weight of a single bean to calculate how many pounds of coffee you need to brew at once (and then adjust accordingly). This is useful if you’re making a large batch of coffee and don’t want to waste any grounds.

A person pouring coffee beans from a spoon into a small can and weigh it on a white weighing scale

Why Are Coffee Beans of Different Weights?

Some beans are naturally heavier than others because they have a higher percentage of oil in their pulp. These beans are ideal for making espresso because the oil helps extract the flavor and aroma of the beans.

Other beans have been bred to have a lower oil concentration, so they do not develop as much flavor during roasting. These types of beans make for a lighter brew, which is why most people prefer them for lattes or cappuccinos.

Related Questions

How Do I Calculate the Weight of a Coffee Bean?

To calculate the weight of a coffee bean, place a mug on the scale and re-zero it so that you are measuring just the weight of the coffee. Fill your scale with a few beans at a time until it reads 1.1 oz. 3 cups of coffee become 1.1 oz, a generally recognized strength.

How Many Types of Coffee Beans Are There?

There are four basic types of beans: Arabica, Robusta, and Liberica. These three types come from different parts of the world, each with a unique flavor profile.


There are plenty of reasons to find out the weight of a bean. Now I have an easy way of doing it, thanks to my phone. Now that you know the answer, you should have no problem determining how much a coffee bean weighs.