Abstract: Disclosed is a folding portable footstool that is lightweight, portable, and easy to handle. The folding portable footstool includes a base, a first leg member, a second leg member, and a platform which, when engaged by one or both of the leg members, is adjustable to one of a plurality of possible angles and one of a plurality of possible heights. The folding portable footstool may also comprise a platform with a plurality of slits, stability members extending on both sides from a bottom surface of the second leg member, extension members on each top surface of both leg members to engage slits in the platform, a structural member connecting both leg members, a lock house assembly housed within the structural member, a pull strap mechanism attached to the first leg member, and a backstop mechanism attached to the bottom surface of the platform.