Deck Stair Calculator
Calculate stair stringers, treads, and dimensions based on total rise.
Utilisez des decimales si necessaire. Cette estimation se met a jour en direct et peut etre ajustee en toute securite avant l'achat.
Deck Stair Buying Guide
This guide helps you turn your deck stair calculator result into a cleaner purchase plan. Use it when you want fewer return trips, better waste assumptions, and a more realistic cart.
Step 1: Measure total rise perfectly
The 'total rise' is the exact vertical distance from the lower floor to the upper floor. Even a 1/4-inch mistake will result in uneven, dangerous steps.
Step 2: Obey the 7-11 rule
Most building codes mandate that a step's rise should be no more than 7.75 inches and the run (tread depth) should be at least 10 or 11 inches.
Step 3: Buy pre-cut vs uncut stringers
For standard deck heights, you can buy pre-cut pressure-treated stringers. For custom heights, you must buy 2x12 lumber and cut the zig-zag pattern yourself.
Souvent utile pour ce projet
Outils et accessoires souvent associes
Ce sont les petits extras pratiques souvent oublies jusqu'au dernier moment, surtout quand une estimation devient une vraie liste d'achat.
Divulgation : ces liens peuvent etre des liens d'affiliation.
Stair cost planning rule of thumb
In addition to stringers, treads, and risers, budget for heavy-duty metal stringer hangers, structural screws, and a handrail system.
Understanding the Math
Formula: The basic formula for Deck Stair Calculator typically involves calculating the total area or volume (Longueur × Largeur × Depth) and dividing by the coverage of a single unit or package, then adding a waste factor (usually 10%).
Example: For example, if you have a 10x10 area and your material covers 10 square feet per unit, you need 10 units. With a 10% waste factor, you should purchase 11 units to ensure you don't run short.
Related Calculators
FAQ Deck Stair Calculator
Faut-il arrondir avant d acheter ?
Oui. Une petite marge couvre les coupes, la perte et les ajustements de derniere minute.
La disposition influence-t-elle la perte ?
Oui. Les plans simples demandent moins de marge, tandis que les angles, motifs et obstacles en demandent davantage.