Tools needed for building stairs tape measurecircular saw electric drill with screwdriver attachment hammer straight edge (ruler or T-Square) lead pencil hand saw framing square stair gauges (optional) stair stringer design software CAD software (optional) safety goggles work gloves ear plugs [tags]building stairs, stair stringer calculator, stair building, stair treads, rise run, stair stringer spreadsheet[/tags]