Convert one square kilometer to hectares

Explanation

To convert one square kilometer to hectares all we need is to know the conversion factor and we are done. Luckily, we can compute that factor using the units' definitions below.

The result is that there are 100 hectares in 1 square kilometer.

Formula

1 km² = 100 ha

square kilometerskm²

dimension	area
system	International system of units (SI)
symbol	km², sq km

The square kilometer (km², sq km) is a derived area unit in the International System of Units.

Definition of the square kilometer

One square kilometer is a superficial area equivalent to that of a square whose sides are one kilometer long.

Equivalences

One square kilometer is equivalent to:

Some Facts

The surface of the Earth is roughly 510000000 square kilometers.

SI Area Units

square millimeter	mm²	0.000001
square centimeter	cm²	0.0001
square meter	m²	1
square kilometer	km²	1000000

The International System of Units

The International System of Units or SI (from the French Système international (d'unité)), also called metric system in the U.S., is a coherent system of units that was published 1960. It is official in nearly every country.

The General Conference on Weights and Measures (Conférence générale des poids et mesures) is tasked with overseeing the SI.

hectaresha

dimension	area
symbol	ha

The hectare (ha) is a metric unit of area accepted for use with the SI.

It is widely used throughout the world to measure large areas of land.

Definition of the hectare

One hectare is equal to 10000 square meters.

The International System of Units 9^th edition p. 145

Equivalences

One hectare is equivalent to:

Some Facts

The Amazon rainforest covers 550 million hectares, at least for now. Everywhere in the Amazonian basin the forest is cleared to make space for agriculture and cattle pasture.

It's not a fatality though, deforestation can be prevented by adopting a few good habits.

Prefix

hecto

10²

The prefix hecto- comes from the Greek hekatón meaning a hundred. The associated multiplicative factor is 100 or 10².

Other Units Based on the Are

centiare	ca	0.01
deciare	da	0.1
are	a	1
decare	daa	10
hectare	ha	100