Sample task: convert 25 miles to kilometers. Our converter supports many different pairs of units, so we provide examples on how to perform unit conversions for only the most popular pairs. An imperial to metric converter can be helpful in such situations. Since both systems coexist in the modern world, unit conversion is often needed when dealing with goods purchased from parts of the world using the other system. Its base unit is the meter, initially defined by a metal bar standard, but then redefined more precisely as the distance light travels in a vacuum in 1/299,792,458 seconds. It is used in all sciences, in engineering, navigation, etc. The metric system is a relatively modern system of units and is the official system for most countries in the world. Historically the definitions of the imperial units varied with time and place, but were set relative to the standard meter by a 1959 international treaty. It is currently used only in the United States, United Kingdom, and a couple of other countries, and even there it is defined by using the meter as a de facto base unit. The Imperial system, sometimes referred to as the English system of units is an old system of measurements that was used throughout human history, with evidence of its use in ancient Greece, ancient Rome, the Middle ages, and more. It uses the standards defines by the International System of Units and ISO standards on quantities and units, with the league being the exception, as there is no single definition for it - we are using the U.S. This online imperial to metric unit converter supports conversions from inches (in), feet (ft), yards (yd), miles (mi), nautical miles (M), and leagues (lea) to nanometers (nm), micrometers (μm), millimeters (mm), centimeters (cm), decimeters (dm), meters (m), and kilometers (km). How to convert imperial to metric units?.The formula for converting 2345 inches to miles is. For example, to convert inch to mile: 1 inch = 0.0254 meters 1 mile = 1609.344 meters. So, to convert directly from cm to in you multiply by 0.3937007.Īnother way to look at it is that conversions are performed by multiplying the value to convert by the ratio of 1 input unit in meters to 1 output unit in meters. Or, you can find the single factor you need by dividing the A factor by the B factor.įor example, to convert from centimeters to inches you would multiply by 0.01 then divide by 0.0254. To convert among any units in the left column, say from A to B, you can multiply by the factor for A to convert A into m then divide by the factor for B to convert out of m. To convert from meters into units in the left columnĭivide by the value in the right column or, multiply by the reciprocal, 1/x. Multiply by the conversion value in the right column in the table below. To simply convert from any unit into meters, for example, from 50 centimeters, just Where S is our starting value, C is our conversion factor, and By knowing the conversion factor, converting between units can become a simple multiplication problem: Conversions of length and distance are performed by using a conversion factor.
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