Calculators
The calculations that cost real money when they are done wrong or done late. Every one runs entirely in your browser — no account, no upload, and nothing you type reaches us.
Pitch to angle, slope factor, and common rafter length with the ridge deduction and tail.
Open the calculator →Equal risers from a total rise, with tread depth, total run, stringer length and the 2R+T check.
Open the calculator →Board feet from nominal dimensions, for one piece or a whole order.
Open the calculator →Slabs, continuous footings and round piers in cubic yards, with waste and bag counts.
Open the calculator →Hip length, hip angle, and the common difference that steps every jack rafter down.
Open the calculator →Miter and bevel settings for sprung moulding cut flat, at any spring and corner angle.
Open the calculator →Multiplier, distance between bends, and the shrink to take off the measurement.
Open the calculator →True offset, travel and run when a pipe moves up and sideways at once.
Open the calculator →Bar count both ways, total linear feet and weight, for a slab mat at your spacing.
Open the calculator →Studs, plates and sheathing for a straight wall — with what is deliberately left out.
Open the calculator →Footprint and pitch to roof area, squares and bundles, with waste.
Open the calculator →Total fall over a run, in inches per foot, percent or ratio — all three at once.
Open the calculator →Because they are the same arithmetic the app does, and there is no good reason to put a signup between a framer and a rafter length. If they save you a trip back to the truck, Keld on your phone will save you more — it works offline, where the signal usually is not.
The lookups that go with them: