RafterMate: Construction Calc

RafterMate is the construction calculator you buy once — no subscription, no account, no ads.

Built for carpenters and framers, it does the feet-inch-fraction math you do all day, then adds the trade tools you actually reach for — each on its own visual screen with a live blueprint diagram, accurate to 1/16".

THE CALCULATOR
- Feet-inch-fraction, decimal feet, yards and metric - add, subtract, multiply, divide
- Paperless tape that remembers every step
- Area, volume, square feet and cubic yards

THE PRO TOOLS (one-time unlock)
- Rafter - run + pitch to rafter length, plumb/seat/birdsmouth cuts, ridge and overhang
- Stair - total rise to risers, treads, stringer length and the bottom-riser drop, with live IRC code warnings
- On-Center - wall length + 16"/19.2"/24" spacing to stud/joist counts, mark positions and wall-framing material
- Roofing - roof area to squares, shingle bundles and sheathing
- Area & Volume - slabs, footings and piers to square feet and cubic yards of concrete
- Board Feet - thickness x width x length to board feet and cost
- Cut List - your pieces + stock lengths to a waste-minimizing, kerf-aware cut plan
- Miter - crown and corner miter + bevel angles

WHY RAFTERMATE
- Buy once. No subscription. Ever.
- Works fully offline - no account, no sign-in
- Universal - one purchase covers iPhone and iPad
- Validated against pro reference math to 1/16"

Pay once, open to the calculator, get to work.