Deck Stairs Calculator

Total Rise

Step Run

Tread Type

  • 2 - 5/4x6
  • 2 - 2x6
  • 1 - 2x12

Deck Joist Size

  • 2x6
  • 2x8
  • 2x10
  • 2x12

Stringer Attachment

  • Outside Frame
  • Outside Frame - Flush
  • Inside Frame


  • Concrete Find how much concrete you will need for your project
  • Beams and Footings Determine your beam and footing size based on your joist span and post spacing
  • Joist Span Maximum joist span between beam and house or beam to beam
  • Decking Deck floor materials, screws and hidden fastener calculator
  • Railing Calculator 2x2 and classic Deckorators balusters
  • Stairs Stringer length, Angle, Projection and number of risers needed