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.

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.

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

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

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).