Free Online Feet-Inch and Metric Calculator
A free feet and inches calculator supports fractional inch precision, adjustable rounding, and a built-in calculation history log — no install required.
Measurement, Scale, and Geometry
Area, volume, and slope calculations, drawing scales, and imperial and metric conversions. Also includes our feet-inch calculator, a printable architect’s scale, and building area calculations.
Imperial Equivalents
Various imperial equivalents for distance, area, and volume so that you can compare various scales of measurement.
Metric Equivalents
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.
Calculating Area
Use these diagrams to calculate the area of different shapes including circles, ellipses, quadrilaterals, and trapezoids.
Calculating Volume
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
How to convert drawings from one architectural or engineering scale to another. Includes a scale conversion calculator.
Free Printable Architect’s Scale
Download a free printable architect scale in PDF format.
Building Area Square Footage Calculations
Architects must understand definitions for building area square footage calculations due to the effect on legal contracts and governmental regulations.