21 essential calculators are free. Kerf Pro unlocks all 157, the cut list, jobs and estimates for one payment, never a subscription. Type feet, inches and fractions the way the tape reads, then run concrete, framing, roofing and stair math in seconds. No ads, no account, and it works with no signal on the jobsite. Kerf puts a feet inch fraction calculator and 157 job calculators in one app, built for framers, carpenters, contractors, remodelers and serious DIYers. FEET INCH FRACTION CALCULATOR (FREE) - Add, subtract, multiply and divide feet, inches and fractions - Results round to the tape mark you choose, from 1/2" down to 1/64" - Feet times feet gives square feet, and one more length gives cubic feet - Rise, run, diagonal and pitch keys for right triangles and rafters - Memory slots, trig, degrees-minutes-seconds and a running tape - Convert between feet-inch, decimal feet, inches and metric 157 CALCULATORS, 21 FREE The 21 free calculators cover everyday jobs: wall framing, roofing squares and pitch, stairs, baseboard, deck boards, fence, slabs, block walls, mulch, drywall, paint, tile, flooring, voltage drop and room area. Kerf Pro unlocks all 157, across 14 categories: - Framing: wall framing, rough openings, floor framing, gable studs, sheathing, siding - Roofing: roof pitch, common, hip, valley and jack rafters, birdsmouth cut, roofing squares, shingles, underlayment, drip edge, attic vents, gutters - Stairs: risers, treads, stringer and headroom with IRC code checks, balusters, landings, spiral stairs, ramps - Trim: crown molding angles, compound miter, polygon miter, baseboard, casing, arches - Deck and fence: deck boards, deck framing, footings, fence, pickets, post holes - Concrete: slabs, footings, sonotubes, columns, sidewalks, steps, walls, bags and truck loads, rebar, mesh, control joints - Masonry: block walls, brick, mortar, grout fill, stucco, stone veneer - Landscape and sitework: pavers, retaining walls, gravel, topsoil, mulch, sod, excavation, cut and fill, trenches, French drains, asphalt - Interior: drywall, paint, flooring, tile, thinset, grout, backsplash, carpet, wallpaper, countertops, cabinets - Insulation: batts, blown-in, rigid foam, vapor barrier - Electrical: Ohm's law, circuit load, wire size and voltage drop, conduit fill and box fill from NEC tables - Plumbing: pipe slope, pipe volume, PEX, tank volume - Area and volume: room area, shapes, board feet, material weight TOOLS ON THE BELT - Cut list optimizer (Pro): the fewest boards for your cuts, with blade kerf, offcuts and a buy list - Level and pitch gauge (free): bubble level, angle finder and roof pitch from your phone - Unit converter (free): feet, inches, metric, area, volume and weight JOBS AND MATERIAL LISTS Tap Save to job under any result. The job adds up the materials from every calc you save to it, and you can send the list to your supplier or crew as text. Reopen a saved calc and its numbers come back. Bag yields and coverage rates are editable, so type the number printed on your bag. KERF PRO: PAY ONCE, NO SUBSCRIPTION 21 calculators, the feet inch fraction calculator, the level and the unit converter stay free, for good. Kerf Pro is a one-time purchase that unlocks the whole toolbox and the paperwork for people who bid work: - All 157 calculators - Cut list optimizer with blade kerf, any number of pieces and mixed stock lengths - Unlimited jobs (free includes 1) - Estimates with labor, markup, tax and your margin - Estimate PDF with your logo, terms and a signature line - Price book with your supplier prices - Material lists as CSV or PDF, in English or Spanish - Backup and restore for every job One payment, nothing renews, and Family Sharing is included. IMPERIAL OR METRIC Pick how results show. Inputs take either, so 12' 6 1/2" and 3.81 m both work. Download Kerf and keep the math off the back of the 2x4. Terms of Use: https://kerf.pixoby.space/terms/ Privacy Policy: https://kerf.pixoby.space/privacy/
Utilities · iPhone, iPad, Android · Free
