Convert Hectares to Square Miles
Convert Hectares to Square Miles instantly. 1 Hectare (ha) equals 0.003861 Square Miles (mi²).
Hectares to Square Miles conversion table
| Hectares (ha) | Square Miles (mi²) |
|---|---|
| 1 ha | 0.003861 mi² |
| 2 ha | 0.007722 mi² |
| 3 ha | 0.01158 mi² |
| 5 ha | 0.01931 mi² |
| 10 ha | 0.03861 mi² |
| 20 ha | 0.07722 mi² |
| 50 ha | 0.1931 mi² |
| 100 ha | 0.3861 mi² |
| 500 ha | 1.9305 mi² |
| 1,000 ha | 3.861 mi² |
1 Hectare = 0.003861 Square Miles · multiply Hectares by 0.003861
About converting Hectares to Square Miles
Hectares (ha) and Square Miles (mi²) are both units of area, so converting between them is a single multiplication: multiply your Hectares figure by 0.003861. Ten Hectares comes to 0.03861 Square Miles, and a hundred works out at 0.3861 Square Miles.
Rule of thumb: going from Hectares to Square Miles divides, so the figure always shrinks — it takes about 258.9988 Hectares to make a single Square Mile. If your answer came out bigger, you have the conversion the wrong way round.
What is a Hectare?
The hectare is the metric answer to the acre: a square 100 meters on a side, or 10,000 square meters. It is what farmland, forestry, plantation, conservation and deforestation figures are reported in almost everywhere outside the United States. A subtlety worth knowing is that the hectare is not actually an SI unit — like the liter, it is merely accepted for use alongside SI. The coherent unit for land really is the square meter, but nobody wants to state a country’s forest cover with that many zeroes, so the hectare was tolerated into permanence.
What is a Square Mile?
A square mile is the area of a square one mile on a side, and in the United States it is the standard way to state the size of anything large: counties, states, metropolitan areas, wildfires and watersheds are all reported in square miles, along with population density in people per square mile. Elsewhere the same figure is given in square kilometers, which is why one lake can carry two very different-looking numbers depending on the source. The unit is literally built into the American landscape — the Public Land Survey System carved much of the country into square-mile sections, which is why the Midwest is a grid of mile-spaced roads.
To put both in perspective: a hectare is a square 100 meters on a side, while Manhattan is roughly 23 square miles.
The converter above updates as you type, and the table lists common values for quick reference. Need the opposite direction? Use the Square Miles to Hectares converter, or browse all Area converters.
Frequently asked questions
How many Square Miles are in one Hectare?
There are 0.003861 Square Miles in one Hectare.
How do I convert Hectares to Square Miles?
Multiply the number of Hectares by 0.003861. For example, 10 Hectares = 0.03861 Square Miles.
What is 100 Hectares in Square Miles?
100 Hectares is equal to 0.3861 Square Miles.
How do I convert Square Miles to Hectares?
Multiply the Square Miles value by 258.9988 (or divide by 0.003861).
Is this Hectares to Square Miles conversion exact?
The definition is exact — Hectares and Square Miles are both fixed against the same base by international agreement — but the decimal shown here is rounded for readability, because the true ratio does not terminate. For engineering or scientific work, carry more decimal places than this page displays.
What is a Hectare?
The hectare is the metric answer to the acre: a square 100 meters on a side, or 10,000 square meters. It is what farmland, forestry, plantation, conservation and deforestation figures are reported in almost everywhere outside the United States. A subtlety worth knowing is that the hectare is not actually an SI unit — like the liter, it is merely accepted for use alongside SI. The coherent unit for land really is the square meter, but nobody wants to state a country’s forest cover with that many zeroes, so the hectare was tolerated into permanence.
What is a Square Mile?
A square mile is the area of a square one mile on a side, and in the United States it is the standard way to state the size of anything large: counties, states, metropolitan areas, wildfires and watersheds are all reported in square miles, along with population density in people per square mile. Elsewhere the same figure is given in square kilometers, which is why one lake can carry two very different-looking numbers depending on the source. The unit is literally built into the American landscape — the Public Land Survey System carved much of the country into square-mile sections, which is why the Midwest is a grid of mile-spaced roads.