Construction Calculator Kit

No account. Works offline. Every calculator free forever. A construction calculator for DIY homeowners, contractors, carpenters and estimators: exact feet-inch-fraction math plus 15 job calculators with material lists and a saved job list with waste % and cost.

TAPE-STYLE FRACTION CALCULATOR
Add, subtract, multiply and divide feet and inches with exact fraction math down to 1/64 inch. Convert instantly between feet-inch fractions, decimal feet, decimal inches, meters and millimeters. Big buttons work even with work gloves on.

15 JOB CALCULATORS
• Concrete: cubic yards, cubic feet and 80 lb or 60 lb premix bags for slabs, footings and columns, with an editable waste allowance.
• Drywall: 4x8, 4x10 and 4x12 sheets, screws, tape and joint compound for walls and ceilings.
• Tile & flooring: area, tile count and grout bags with your joint width and waste.
• Roofing: pitch factor, squares, bundles and rafter length for gable and hip roofs.
• Paint: gallons for one or more coats, minus windows and doors.
• Lumber & framing: board feet for dimensional and rough-cut timber.
• Stairs & decks: risers (7.75 in IRC maximum), tread count, stringer length, deck boards and fence posts.
• Geometry & grading: 3-4-5 squaring, area and volume of shapes, and grade/slope percentage.

FROM MEASUREMENT TO MATERIAL LIST
Send any result straight into a saved job. Add unit prices and waste percentages to see a running cost estimate for the whole job.

FREE AND PRO
Free forever: every calculator and up to 3 saved jobs. Pro adds unlimited jobs, custom unit prices with line-item totals, PDF estimate export for clients and no ads. Google Play shows current prices and any eligible trial before purchase. A rewarded ad can unlock PDF export for 24 hours.

Estimates only: check quantities with your supplier and your local building code. Every tool shows its formula.

Support: halimbox026@gmail.com

Recent changes:
First release.