How big are coffee beans?

The size of coffee beans can vary depending on the species and variety of the coffee plant, as well as the specific growing and processing conditions. However, on average, coffee beans can range in size from about 10 to 15 millimeters (mm) in length, and 5 to 10 mm in width.

For comparison, some common objects that are similar in size to coffee beans include:

* Sesame seeds

* Lentils

* Popcorn kernels

* Chickpeas

* Small raisins

It's worth noting that coffee beans can also be sold as ground coffee, in which case they are much smaller in size due to being broken down into smaller particles. Ground coffee beans can range from coarse to fine in texture, depending on the desired brewing method.