Measurement, Scale, and Geometry
Various imperial equivalents for distance, area, and volume so that you can compare various scales of measurement.
Various metric equivalents are discussed for distance, area, and volume so that you can compare different scales of measurement.
Metric / Imperial Conversions
The difference between soft and hard conversions, plus soft conversions are provided for changing between metric and imperial.
Use these diagrams to calculate the area of different shapes including circles, ellipses, quadrilaterals, and trapezoids.
Volume calculations can be complicated, but use this article to determine the volume of an object.
Calculating Slope and Common Slopes in Architecture
Formulas for calculating the slope of lines or surfaces, plus tables of common slopes used in architecture.
Converting Between Drawing Scales
Description of how (and a calculator) to convert drawings from one architectural or engineering scale to another.