Which planets are smaller than earth?

There are two planets in our solar system that are smaller than Earth:

Mercury: Mercury is the smallest planet in our solar system and is even smaller than some moons in the solar system. It has a diameter of about 4,879 kilometers (3,032 miles), which is roughly 38% the size of Earth.

Mars: Mars is the fourth planet from the Sun and is also smaller than Earth. It has a diameter of about 6,792 kilometers (4,222 miles), which is approximately 53% the size of Earth.

It's worth noting that there are other celestial bodies in the solar system, such as dwarf planets and moons, that are smaller than Earth as well. However, if we're strictly considering planets, Mercury and Mars are the two smaller ones compared to Earth.