- Home
- Area & Drawings
Area & Drawings
Convert area units and draw irregular polygon zones for additive/subtractive area measurement.
Area measurement
Simple dimensions, drawing, triangles, trapezoids and ellipses
Area unit converter
Convert square units, acres and pyeong
Bolt circle PCD and hole position calculator
Calculate equal-angle bolt-circle chord spacing, the first hole's XY position and angular pitch from PCD, hole count and start angle.
Circles & arcs
Circles, sectors, rings, chords and sagitta
Cone & frustum volume
Cone & frustum volume calculators with separate inputs and assumptions
Cylinder Surface Area Calculator
Calculate the total, curved and end-cap area of a closed right circular cylinder. Enter your own measurements and review the stated assumptions.
Drawing Scale Length Converter
Drawing : actual scales, from paper cm to real m
Linear Elevation Interpolation
Linear Elevation Interpolation: enter the labelled dimensions or electrical values, calculate related outputs, and review scope limits before using the estimate.
Diagonals & right triangles
Diagonals, hypotenuse and angles from perpendicular sides
Tank capacity
Capacity and water volume of rectangular or upright round tanks
Slopes & roofs
Grade, angle, surface area and roofing materials