Abstract: The present disclosure provides tools, systems, and methods for leveling and aligning tiles. A tile leveling tool for guiding installation of tiles on an uneven installation surface comprises: an elongated main body extending along a longitudinal axis thereof, from a first end to a second end, wherein the main body further comprises a flat reference side, wherein the reference side has a straight reference edge parallel to the longitudinal axis; and at least one adjustable spacer extending from the main body configured to extend toward the installation surface, wherein the adjustable spacer is configured to adjust a space between the main body and the installation surface to arrange the reference edge straight across the uneven installation surface and to guide the installation of the tiles evenly.