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How Long Should My Stair Stringers Be?

When building deck stairs, you will need to determine the total height of the deck at the stairs. This is the change in elevation from the top of the deck to where you expect the stairs to land. Place a level straight out from the deck and measure to the ground or landing using a tape measure.

You also will need to establish the tread depth and riser height for each step using our Decks.com Stairs Calculator. The minimum tread depth is 10" and the maximum riser height is 7-3/4". The Stairs Calculator will also provide you the length of the 2x12 stair stringer you will need to use and the angle of the stairs.


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Box Steps and Stairs

Learn how to build a set of box platforms to act as stairs for a low deck. You don't need to cut stair stringers.

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Planning to Land Stairs on a Future Patio

Learn how to determine the location of your stair landing and how to install a concrete slab using forms. Follow these step-by-step DIY instructions.

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Stair Stringer Length

Learn how to measure the height of your deck and use our Decks.com Stairs Calculator to determine your stair stringer lengths.

Next Step: Railings Articles
Deck Railing Types

Glass Rails

Installing glass rails will usually require you to build the rail frame first and take precise measurements to custom order the tempered safety glass...

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Composite vs Aluminum Railing

Composite and aluminum railings are great low maintenance alternatives to traditional wood. Learn the differences between these materials with Decks.com.

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Top 18 Deck Railing Ideas & Designs

Railings add the finishing touch to your deck. Get inspired by these deck railing ideas and styles from Decks.com and make your outdoor space unique.

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More Helpful Resources

Explore Articles by Topic

Create a free account and get instant & exclusive access to all that Decks.com has to offer:

Checkmark 1,000+ How-To articles
Checkmark 80+ Free Deck Plans
Checkmark Deck Planning Calculators
Checkmark Free & Simple Deck Design Tool
Staircases

How Long Should My Stair Stringers Be?

When building deck stairs, you will need to determine the total height of the deck at the stairs. This is the change in elevation from the top of the deck to where you expect the stairs to land. Place a level straight out from the deck and measure to the ground or landing using a tape measure.

You also will need to establish the tread depth and riser height for each step using our Decks.com Stairs Calculator. The minimum tread depth is 10" and the maximum riser height is 7-3/4". The Stairs Calculator will also provide you the length of the 2x12 stair stringer you will need to use and the angle of the stairs.


Popular Stairs Articles
Staircases

Box Steps and Stairs

Learn how to build a set of box platforms to act as stairs for a low deck. You don't need to cut stair stringers.

Staircases

Box Steps and Stairs

Learn how to build a set of box platforms to act as stairs for a low deck. You don't need to cut stair stringers.

Staircases

Stairway Lighting

Learn about how to install low-voltage deck stair lighting.

Next Step: Railings Articles
Deck Railing Types

Glass Rails

Installing glass rails will usually require you to build the rail frame first and take precise measurements to custom order the tempered safety glass...

Deck Railing Parts

Balusters

Step-by-step instructions on installing deck rail balusters. Learn how to install metal balusters with connectors.

Railing Codes

Deck Railing Codes

Learn about the building codes that regulate guardrails. How high do rails need to be? What are the rail infill requirements?

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