What this deck board calculator calculates
A 10 ft wide deck with 5.5 in actual boards and a 1/8 in gap needs 22 boards across before waste.
Formula
Ceiling(deck width × 12 ÷ (actual board width + gap)) = boards across; boards × run length = lineal feet.
Worked example
For a 10 × 12 ft deck, 22 boards across × 12 ft = 264 lineal ft. Ten percent waste is 290.4 lineal ft, or 25 boards rounded by count.
Ordering decision
Picture framing, breaker boards, stairs, fascia, and blocking are separate from the field-board quantity.
The page cites the applicable Uzi Tools reference table beside the calculator. Product labels, current editions, local code, and a licensed professional govern structural, electrical, and life-safety work.
How to use it
- Enter the measured dimensions and keep the displayed units beside each field.
- Review the deck boards across a field result and the substituted formula before ordering.
- Adjust waste for the layout, cut pattern, product package, and site conditions.
- Copy or print the material list, then verify the cited product data and local requirements.
Deck boards across a field
This deck board calculator counts boards across the deck width after including the selected gap, then reports lineal feet along the run and a cut allowance.
Limits and professional review
Measurements, product yield, waste, moisture, and site conditions can change the order quantity. Local code and a licensed professional govern structural and electrical work.