Because there will always be a minority of people that are not familiar with the SI. They cannot be bothered to learn a new, but much better system. The political will to change is not there because the benefits of a switch would accrue after the life of a government.
Chat with our AI personalities
"Other" implies that already have some countries in a list - and I do not know which countries are in your list. The main countries that have not adopted the SI system are the US, Myanmar and Liberia. Some, like the UK, adopted the SI but its implementation is only half-hearted.
Imperial units or the imperial system is a system of units, first defined in the British Weights and Measures Act of 1824, later refined (until 1959) and reduced. Systems of imperial units are sometimes referred to as foot-pound-second, after the base units of length, mass and time. The units were introduced in the British Empire, excluding the then already independent United States. As of 2008, all countries that used the imperial system have become officially metric, except for the United States, Burma and Liberia, however some other countries have laws mandating or permitting other systems of measurement, such as the United Kingdomwhich still uses many imperial measures, such as miles and yards for road signs, lb/oz, pints, etc. for many products, and also uses inches and barleycorns for clothing and shoe sizes respectively. according to http://en.wikipedia.org
Every country in the world has adopted the Metric System except for Liberia, Myanmar and the U.S.A. A number of countries, including Canada and the United Kingdom, use Imperial for some things. For instance, Canada measures human heights and cooking ingredients using Imperial measure. Britain measures human weight in stone (which is even more antiquated than the American standards of measurement) and road distances in miles.
The answer depends on what characteristic you wish to measure: the mass, height, or some other aspect. However developed countries use the SI system of measurement, so you may have to convert from the "official" measure..
The international system of units is practically legal in all the countries; but some countries as United States, United Kingdom and the old colonies of US and UK refuse this system.