Hectare

People use a name for big land.

It is called a hectare. It shows how much space a field has. This helps people plan farms and towns.

A hectare is a big square. Each side is 100 metres long. It is much larger than an acre.

Many lands use the hectare. People use it in Canada and the United Kingdom. They also use it in Australia. The United States uses the acre instead.

It is a very useful way to measure the world.

How big is a field? People use the hectare to find out. A hectare is a unit for measuring area, or the space inside a shape.

Imagine a giant square. Each side of this square is 100 metres long. This makes the total area 10,000 square metres.

Many countries use hectares to measure land. This helps with farming, forests, and building towns. People use it in the United Kingdom, Canada, and Australia. In the United States, people use a unit called an acre instead. One hectare is much larger than an acre. In fact, one hectare is about 2.47 acres.

The name comes from French words. It is part of the metric system. Even though it is not an official SI unit, it is still accepted for use. This means it works well with other metric tools. In some places, people use smaller parts too. They might use an are or a centiare. An are is 100 square metres. A centiare is just one square metre. These small units help people measure land very carefully.

How much space is inside a large field? People use the hectare to answer that question. A hectare is a unit used to measure area, which is the amount of surface a shape covers.

You can imagine a giant square on the ground. Each side of this square is 100 metres long. This shape covers a total of 10,000 square metres.

It is a very useful size for measuring big pieces of land. Many people use it for farming, forests, and planning new towns.

The hectare belongs to a family of measurements. It is built from a smaller unit called the are. One are is a square that is 100 square metres.

Because the prefix "hecto-" means one hundred, a hectare is exactly 100 ares. There are even smaller units in this family. A centiare is just one square metre. A deciare is ten square metres. In Norway and parts of the Middle East, people use a unit called the decare. One decare is equal to 10 ares, or 1,000 square metres.

History shows us how these measurements began. In 1795, the French government gave the metric system a legal basis. They defined the metre for length and the are for land area.

Later, in 1960, the metric system was updated to become the International System of Units, or SI. During this update, the are was not officially recognized as an international unit. However, the hectare stayed important. It is now a "non-SI unit accepted for use" with the SI system. This means it is still a trusted way to measure land.

Different parts of the world use different names for land. In the United States and Myanmar, people use the acre instead. One hectare is much larger than one acre. In fact, one hectare is about 2.47 acres.

Many old names have been changed to match the hectare. In China, a unit called gongqing is the same as a hectare. In Iran, they use the jerib. In Argentina, the manzana is equal to one hectare. In Greece, people use a unit called the stremma, which is one-tenth of a hectare.

Even though we use the hectare for big areas, we can use it for very small ones too. In Mexico, people combine hectares, ares, and centiares to be very exact. They might write a measurement like 1-21-00.26 ha. This tells them exactly how much land is in a specific plot.

Using these units helps everyone agree on how much land someone owns. It helps lawyers with land deeds and helps farmers manage their crops. Whether it is a small garden or a huge forest, these numbers help us understand our world.

A hectare is a specific unit used to measure area, which is the amount of surface a shape covers. It is most commonly used to measure large pieces of land, such as farms or forests.

While it is not part of the International System of Units (SI), it is the only named unit of area accepted for use with the SI. This makes it a vital tool for land management, law, and agriculture across much of the world. A hectare is mathematically equivalent to a square hectometre. It represents a total area of 10,000 square metres.

To understand the scale of a hectare, imagine a large square on the ground. Each side of this square measures exactly 100 metres in length. This specific geometry results in an area of 10,000 square metres.

You can also think of it in relation to a square kilometre. There are exactly 100 hectares contained within one square kilometre. The hectare is part of a larger family of measurements based on the "are." An are is a smaller unit equal to 100 square metres. Because the prefix "hecto-" means one hundred, a hectare is simply 100 ares.

The hectare belongs to a structured family of metric area units. These units are created by adding standard metric prefixes to the base unit, the are. A centiare is the smallest common unit in this group, representing just one square metre. A deciare is a slightly larger unit equal to ten square metres. There is also the decare, or dekare, which equals 10 ares or 1,000 square metres.

In some specialized real estate contexts, people even use the decimilliare. This unit is one ten-thousandth of an are, which is equal to one square decimetre. This is roughly the size of a four-inch-by-four-inch square.

The history of these units began with the French Revolutionary government in 1795. On 7 April 1795, a law was passed that gave the metric system a legal basis. This law defined five primary units: the metre for length, the are for land area, the stère for firewood volume, the litre for liquid volume, and the gram for mass.

When the metric system was updated in 1960 to become the International System of Units (SI), the are was not included as a recognized unit. However, the hectare was maintained. The International Committee for Weights and Measures (CIPM) currently classifies the hectare as a "non-SI unit accepted for use with the International System of Units."

Geography plays a major role in how land is measured today. The hectare is the legal unit for land ownership and town planning in many places. This includes the United Kingdom, Canada, Australia, New Zealand, South Africa, and the entire European Union. However, the United States and Myanmar use the acre instead. One hectare is significantly larger than an acre. Specifically, one hectare is approximately 2.47 acres.

In other regions, different names are used for units that have been redefined to equal exactly one hectare. For example, the jerib is used in Iran, and the manzana is used in Argentina. In China, the unit is known as gongqing.

Different cultures also use smaller subdivisions of the hectare for specific needs. In Russia and parts of the former Soviet Union, the are is called a "sotka," meaning one hundred. This is often used to describe small garden plots or city parks. In Mexico, land measurements are often written as a combination of hectares, ares, and centiares. For instance, a measurement of 1-21-00.26 ha represents 1 hectare, 21 ares, and 0.26 centiares. This allows for extremely precise descriptions of land area.

Many local units around the world are equivalent to parts of a hectare. In Greece, the stremma is equal to one-tenth of a hectare. In Norway, the unit called mål is used, and the decare is also common. In the Middle East and the Balkans, the dunam (or dönüm) is a standard measure. One hectare is equal to exactly 10 dunam or 10 stremmata. In Thailand, a hectare is equal to 6.25 rai, and in Egypt, it is 2.381 feddan. These connections show how the hectare helps standardize land measurement across different global systems.