InspectUSA offers a staircase calculator to determine the rise and run.

Shalla.net offers an Excel spreadsheet program for designing stairs.

Blocklayer.com has a stair calculator that’s a bit more advanced than your average rise and run calculator.

Dia Dot Toolbox offers a option filled stair stringer calculator.

jself.com offers a step by step on how to cut stair stringers.

[tags]building stairs, stair stringer calculator, stair building, stair treads, rise run, stair stringer spreadsheet[/tags]