Planning to build a deck or need to replace your existing deck stairs? With some simple measurements and the use of a stair calculator, you can figure out the needed rise of each step to make them uniform. Buying precut stair stringers can work if you just need a couple of steps and you have the correct height to the top of the deck so that each step is the same height. If you need more steps or different height than the precuts come in, you will need to make your own.
Here is a great video from Decks.com on how to build stairs for your deck, or anywhere else you need stairs.