Deck, Stair & Fence Calculators

Count deck boards, joists and screws, lay out stairs that are comfortable and consistent, and count every post, rail and picket in a fence run before you buy.

Deck Board CalculatorDeck boards, joists and screws or hidden clips for any size deck.
Stair CalculatorRisers, treads, total run and stringer length from the total rise.
Fence CalculatorPosts, rails, pickets or panels and post concrete for any fence run.

Checked formulas. Every result is tested against hand calculations and a trade reference.

Working shown. See exactly how each number was worked out.

Honest limits. We say when a job needs a licensed professional.

How we build and check our calculators