I consider myself pretty conversant in metric units. I know that 20 kilograms is 44 pounds (double it and add 10%) and that five kilometers is a little over three miles (I’ve, uh, run a lot of 5Ks).

If you live in one of the few countries that use the Fahrenheit temperature scale (that would be the United States, the Bahamas, the Cayman Islands, Liberia, Palau, the Federated States of Micronesia ...

Every once in a while, you may see a temperature in Celsius instead of Fahrenheit. Your car thermometer may revert to the wrong system and you don’t know how to change it, for example. Since almost ...

212°F is the boiling point of water at sea level. The scale is widely used in the United States, some Caribbean countries, and a few others. It remains common in weather reports, household ...

Canada and almost every other country except the United States uses the Celsius (degrees C) temperature scale, which is part of the metric system. In the United States, the Fahrenheit (degrees F) ...

The Kelvin (K), named after British physicist William Thomson (Lord Kelvin), is the thermodynamic temperature unit in the International System of Units (SI). It is derived from the third law of ...

Hot and cold are measured using a numeric scale called temperature. Temperature scales are how we communicate about the weather, measure safety and comfort and explain the physical world. Using ...