A child seat includes a seat body, and a first and a second support respectively assembled with the seat body via a first and a second connection. The seat body has a seating surface and a bottom surface below the seating surface, and the first and second support are extendable below the bottom surface. The child seat has a first configuration in which the first support is configured as a leg resting board and the second support extends forward toward the first support, and a second configuration in which the first support is folded to a substantially horizontal position and the second support extends rearward so that the child seat is able to stand on the first and second supports.