Board and batten spacing calculator
Calculate equal clear gaps, centre spacing and each batten’s left-edge position. Choose flush edge battens or equal end gaps.
Open toolMEASURE TWICE. SPACE IT RIGHT.
Measure walls and openings once. Compare paint, wallpaper and decorative battens, then take a clear quantity sheet to the store.
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Measure multiple walls and openings once, then get paint quantities, wallpaper drop estimates and decorative batten positions in one printable plan.
A 120 × 96-inch wall and a 144 × 96-inch wall total 176 square feet. A 36 × 80-inch door removes 20 square feet, leaving 156. Two coats at an entered coverage of 350 square feet per US gallon use 0.89 gallon before allowance. With 10% extra, the estimate is 0.98 gallon, rounded to one 1-gallon can.
Try the worked example, or explore our use actual board width in trim calculations.
Openings are deducted for paint. Wallpaper uses full-height drops; battens use clear sections. Decorative quantities only.
Read how this site works for the calculation approach, limitations and how to report a problem.