Pianos come in many different size and shapes. Most common are the upright pianos, they are in square box shape with keyboard sticking out. Medium to large size upright pianos have front legs, while small student pianos don't have the front legs. Another type is Grand Piano which is triangular shape with 3 legs and a lid that can be opened. Grand pianos can range from very small size of 1.5M square to 2.7M full size concert Grand.
Regardless, they are all very heavy or extremely heavy. Moving and relocating pianos takes much more than just a couple of muscles. Without the proper experience and equipment, there is great risk of hurting yourself, damaging the floor and dropping the piano.