Calculate

Parse, convert, and round construction dimensions between imperial and metric.

Convert between US scales, metric ratios, and real dimensions.

Ramp length, landings, and 1:12 compliance — cited to 2010 ADA §405.

Turning space, doors, toilets, counters, reach ranges & more — diagrams cited to the 2010 ADA Standards.

Stud-count takeoff and on-center layout for a wall (16"/24" o.c.).

Risers, riser height, tread run, and pitch from a rise — cited to IRC R311.7.

Stringer length, plumb/level cut angles, and the framing-square rise & run — plus the cut-stringer throat check.

Convert roof slope between rise-in-12 (6:12), degrees, and percent grade.

Common-rafter run, rise, line length, plumb/seat cut angles, and per-foot factors from a span and pitch.

Estimate drywall sheets and paint gallons for a wall or ceiling area.

Cubic yards, cubic metres, and bag counts for slabs, footings, walls, columns, and round piers — with a waste allowance.

Floor area a column carries and the load it takes down — interior, edge, or corner.

Rough member depth from a span using typical span-to-depth ratios (rule of thumb).

Even baluster spacing under the 4″ sphere rule, plus cited guard heights — IRC (residential) & IBC (commercial).