A height-adjustable platform comprising: - a top frame comprising a track system , - first and second movable members arranged to be guided in the track system , each movable member comprising a respective leg mount , - a first pair of parallel platform legs , each leg having a first and a second end , the first ends of the first pair of legs being attached to the leg mount of the first movable member , the second ends of the first pair of legs being attached to respective casters via respective caster mounts , and each of the first pair of legs comprises a pair of mutually parallel rods rotatably fixed at one end to the leg mount of the first movable member and rotatably fixed at the other end to the respective caster mount , the pair of rods together with the leg mount of the first movable member and the respective caster mount forming a parallelogram configuration, - a second pair of parallel platform legs , each leg having a first and a second end , the first ends of the second pair of legs being attached to the leg mount of the second movable member , the second ends of the second pair of legs being attached to respective casters via respective caster mounts , and each of the second pair of legs comprises a pair of mutually parallel rods rotatably fixed at one end to the leg mount of the second movable member and rotatably fixed at the other end to the respective caster mount , the pair of rods together with the leg mount of the second movable member and the respective caster mount forming a parallelogram configuration, the first pair and the second pair of parallel platform legs being arranged to cross one another, a first rod of the first pair of platform legs being rotatably connected to a first rod of the second pair of platform legs at a first connection point , a second rod of the first pair of platform legs being rotatably connected to a second rod of the second pair of platform legs at a second connection point , whereby the first pair of legs and the second pair of legs can be rotated with respect to one another around the first and second connection points, which in combination with the parallelogram configurations allow a height of the top frame with respect to the casters to be changed. - a top frame comprising a track system , - first and second movable members arranged to be guided in the track system , each movable member comprising a respective leg mount , - a first pair of parallel platform legs , each leg having a first and a second end , the first ends of the first pair of legs being attached to the leg mount of the first movable member , the second ends of the first pair of legs being attached to respective casters via respective caster mounts , and each of the first pair of legs comprises a pair of mutually parallel rods rotatably fixed at one end to the leg mount of the first movable member and rotatably fixed at the other end to the respective caster mount , the pair of rods together with the leg mount of the first movable member and the respective caster mount forming a parallelogram configuration, - a second pair of parallel platform legs , each leg having a first and a second end , the first ends of the second pair of legs being attached to the leg mount of the second movable member , the second ends of the second pair of legs being attached to respective casters via respective caster mounts , and each of the second pair of legs comprises a pair of mutually parallel rods rotatably fixed at one end to the leg mount of the second movable member and rotatably fixed at the other end to the respective caster mount , the pair of rods together with the leg mount of the second movable member and the respective caster mount forming a parallelogram configuration, <EOS>