What is the average size of a leaf?

The average size of a leaf can vary widely depending on the species of plant. Generally, leaves can range from less than an inch to over three feet in length. For instance, small leaves of plants like clover may measure just a couple of centimeters, while large leaves of tropical plants like the giant elephant ear can exceed three feet. On average, many common deciduous trees have leaves that range from 2 to 6 inches in size.