How do asteroid sizes compare to planet sizes?

Asteroids are significantly smaller than planets, typically ranging from a few meters to hundreds of kilometers in diameter, while planets are much larger, with diameters starting at around 4,800 kilometers for the smallest planets like Mercury. Most asteroids are found in the asteroid belt between Mars and Jupiter, and they can vary greatly in size and shape. In contrast, planets are massive celestial bodies that can have complex atmospheres and geological features, making them far more substantial in terms of mass and volume compared to asteroids.