Home & DIY

Calculate board feet from lumber dimensions. Board foot = (thickness in × width in × length in) / 144. Add price per board foot for total cost.

Calculate carpet, hardwood, laminate, or tile flooring needed by room size. Includes 10% waste factor and converts to square yards plus optional total cost.

Calculate cubic yards of concrete for slabs, footings, or columns. Includes 60 lb and 80 lb bag counts plus 10% waste allowance.

Calculate wallpaper rolls needed by wall size minus doors and windows. Includes 15% pattern-match waste and supports single-roll or double-roll formats.

Convert watts to amps for single-phase or three-phase circuits. Includes power factor and 80% NEC continuous-load rule for breaker sizing.