- Conversion of Units - Convert temperature, measurement, heat and energy units, as well as time, velocity and currency.
- Convert It!
- Metric Conversion Card - Use this easy chart to convert inches to centimeters, pounds to kilograms, Fahrenheit to Celsius, and more.
- U.S. Metric Association (USMA) - national non-profit organization, founded in 1916, which advocates U.S. conversion to the International System of Units (SI), also called the modern metric system.
NIST Handbook 44 Specification, Tolerances, and Other Technical Requirements for Weighing and Measuring Devices (2015 as adopted by South Dakota)
NIST Handbook 130 Uniform Laws and Regulations in the Areas of Legal Metrology and Engine Fuel Quality (2015 as adopted by South Dakota)
NIST Handbook 133 Checking the Net Contents of Packaged Goods (2015 as adopted by South Dakota)