Whois & Analysis for checkyourmath.com

United States customary units are a system of measurements commonly used in the United States.

The United States customary system (USCS or USC) developed from English units which were in use in the British Empire before the US declared its independence.

However, the British system of measures was overhauled in 1824 to create the imperial system, changing the definitions of some units.

Therefore, while many U.S. units are essentially similar to their Imperial counterparts, there are significant differences between the systems.

The metric system is an internationally agreed decimal system of measurement.

It was originally based on the and the introduced by the French First Republic in 1799, but over the years the definitions of the metre and the kilogram have been refined, and the metric system has been extended to incorporate many more units.

Although a number of variants of the metric system emerged in the late nineteenth and early twentieth centuries, the term is now often used as a synonym for "SI" or the "International System of Units"—the official system of measurement in almost every country in the world.

The system of imperial units or the imperial system (also known as British Imperial or Exchequer Standards of 1825) is the system of units first defined in the British Weights and Measures Act of 1824, which was later refined and reduced.

The Imperial units replaced the Winchester Standards, which were in effect from 1588 to 1825.

The system came into official use across the British Empire.

By the late 20th century, most nations of the former empire had officially adopted the metric system as their main system of measurement, although some imperial units are still used in the United Kingdom, Canada and other countries formerly part of the British Empire.

The imperial system developed from what were first known as English units, as did the related system of United States customary units.

An electronic calculator is a small, portable electronic device used to perform operations ranging from basic arithmetic to complex mathematics.

In science, a formula is a concise way of expressing information symbolically as in a mathematical or chemical formula.

The informal use of the term formula in science refers to the general construct of a relationship between given quantities.

The plural of formula can be spelled either as formulas or formulae (from the original Latin).