The centiare is a metric unit of area, equivalent to 1 square meter, used mainly for land measurements in countries where Dutch, French, German, Polish or Portuguese are spoken. It is commonly used with the metric unit of area called an “are”. The metric system uses decimals and prefixes to form multiplier names. The centiare is not part of the International System of Units (SI). The metric system was first adopted by France in 1791 and is now used by most countries except for the United States, Liberia, and Myanmar.
The centiare is a unit of area used in the metric system and is synonymous with 1 square meter (m2). The abbreviation of centiare is ca. The centiare measurement is used almost exclusively for land measurements and is mainly used in countries where Dutch, French, German, Polish or Portuguese are spoken. Almost all other countries that have adopted the metric system use the term square meter instead. To compare this measurement to two common imperial units, 1 centiare is equal to 1.19 square yards and 1 acre is equal to 4,046.85 centiares.
The centiare is part of the metric system, a system that uses decimals to express units of measure. The basic unit is expressed in factors of 10: 10, 100 and 1.000 and so on. Prefixes are used to form multiplier names. These include deca, etto and kilo per ten, cento and mille and deci, centi and milli per decimo, centesimo, millesimo. For example, the meter is the basic unit of measure for length, i.e. 1 kilometer equals 1.000 meters and 1 millimeter is one-thousandth of a meter.
When used for land measurements, the centiare is commonly used in conjunction with the metric unit of area called an “are”. In this measure, 1 are is equal to 100 m2. An example of such a land measurement is 10 ares 8 centiares, or 1008 m2. The word centiare literally means “one hundredth of an are”. Other common metric units of measure used for areas are the hectare, also called hectometre (hm2), which is equal to 10,000 m2; the decameter (dm2), which is equal to 100 m2, and the square kilometer (km2) which is equal to 1,000,000 m2.
The area was the original basic unit of area in the metric system, but is not part of the International System of Units (SI). The metric system was revamped in 1960 and given this new name. In the European Union, the use of both are and hectare is limited to land measurement.
The first country to make the metric system its official measurement system was France in 1791. Today it is used by most countries around the world. The only countries that do not officially use the metric system are the United States, Liberia and Myanmar (formerly known as Burma).
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