Convert ha to m² hectares ↔ square metres Free Online Secure
Type a value in hectares and read it in square metres at once. The factor is exact by definition, the arithmetic happens in your browser, and nothing is sent anywhere.
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Common values — Convert ha to m² (hectares ↔ square metres)
| ha | m² |
|---|---|
| 1 | 10000 |
| 2 | 20000 |
| 3 | 30000 |
| 5 | 50000 |
| 10 | 100000 |
| 20 | 200000 |
| 50 | 500000 |
| 100 | 1000000 |
Where these units come from
Square units need no definition of their own: a square metre is a metre by a metre, and everything follows from the length. The land measures are older and stranger. The acre began as the land a yoke of oxen could plough in a day, which is why it was long and thin rather than square — one chain by one furlong, 4840 square yards. The hectare and the are came out of the French Revolution, when land had to be measured in something decimal; neither belongs to the International System, but both were kept for land because a hectare is a comfortable size to picture and a square metre is not. Since the 1959 agreement on the yard, the acre is exactly 4046.8564224 square metres, so the conversions on this page are exact rather than approximate.
Where you meet them
Square metres price flats, size carpets and decide how much paint a wall needs; square feet do the same work in the United States and in much of the property market worldwide. Hectares belong to farmland, forests and planning permissions; acres to land deeds in the English-speaking world. Square kilometres and square miles are for countries, lakes and fires. Square centimetres and square millimetres live in workshops, on datasheets and anywhere a cross-section matters.
Questions people ask
How big is a hectare, really?
A hectare is a square of 100 m by 100 m, which is 10,000 square metres or about 2.47 acres. A full-size football pitch, touchline to touchline, is roughly 0.7 of a hectare, so a hectare is a pitch and a half. The are, now rarely used on its own, is a hundredth of that: 100 square metres, a square ten metres on a side.
How big is a square metre in practice?
A square one metre on each side. A standard interior door is about 1.8 square metres, a single bed about 2 and a small bathroom around 4. Floor space, paint coverage and property prices are usually quoted per square metre, so a rough feel for the size helps you judge whether a listed figure is generous or tight.
Is the answer exact?
Where both units are defined in terms of one another by whole numbers, yes — the page says so above the figure, and the only rounding is in how many digits are shown. Where the ratio has no finite decimal, the page shows twelve significant digits and says the relation is approximate rather than pretending otherwise.
Does anything I type leave my device?
No. The arithmetic runs in your browser; nothing is uploaded and there is no server to upload it to. Load the page once and it keeps working with the network switched off.
Ten thousand square metres in one hectare
A hectare is a square of 100 metres by 100 metres, so it holds exactly 10,000 square metres. That makes the conversion easy: to convert ha to m² you multiply by 10,000, or move the decimal point four places to the right. So 2.5 ha is 25,000 m², 0.08 ha is 800 m² and 12 ha is 120,000 m². The hectare is the language of farmers, foresters and land registers, while the square metre is the language of builders, planners and engineers, and when the two groups meet they need the conversion. This page multiplies as you type, and the text below shows where it matters, from planting densities to solar parks.
You will find the rule with worked examples, short profiles of both units, a comparison, a long tour of real situations and a list of the mistakes that people make most often. The calculation runs in your browser and nothing you type is sent anywhere.
How to convert ha to m²: multiply by 10,000
The rule
One hectare equals exactly 10,000 square metres. To convert ha to m², multiply the hectares by 10,000, which means moving the decimal point four places to the right. So 1 ha is 10,000 m², 3.5 ha is 35,000 m², 0.25 ha is 2,500 m² and 120 ha is 1,200,000 m². To go back, divide square metres by 10,000.
Worked examples
A building plot of 0.06 ha is 600 m². A vineyard of 4.2 ha is 42,000 m². A farm of 85 ha is 850,000 m², nearly a square kilometre. When the number of hectares has decimals, count the places carefully and fill with zeros if needed: 0.003 ha is 30 m².
Why four places
A side of 100 metres squared gives 100 times 100, which is 10,000. The hectare is 100 times longer on each side than a 1 by 1 metre square, so its area is 10,000 times larger. The factor is therefore the square of 100, a number with four digits.
A quick check
The square metre is the small unit, so the number grows by four digits. If your “convert ha to m²” calculation gave you a number with only two extra digits, you used the linear factor, 100, instead of 10,000.
The hectare
A square of one hectometre
The hectare is the area of a square with sides of one hectometre, 100 metres. The name was coined in 1795 from hecto and are. It is accepted for use with the International System of Units and is the standard unit for land. A hectare is roughly the size of one and a half football pitches, or 2.47 acres.
Where it is used
Farms, forests, nature reserves, building sites and national statistics measure land in hectares. European farm subsidies are paid per hectare.
The square metre
The SI unit of area
The square metre is the area of a square of one metre on each side, 10.76 square feet. It measures rooms, flats, plots and floor space everywhere metric units are used. A hectare is ten thousand of them, a field of 100 by 100 metres.
Where it appears
Building permits, land registers, estate agents, architects and engineers work in square metres. Prices of land and rents are stated per square metre.
Hectare and square metre compared
The hectare is ten thousand times larger than the square metre. A garden fits in square metres, a farm in hectares, and the changeover happens around half a hectare, 5,000 m². Above that figure, the number in square metres becomes long, and the hectare gives something easier to read.
Prices show the difference vividly. Land at 20 euros per square metre costs 200,000 euros per hectare. A buyer who quotes the first and a seller who quotes the second are saying exactly the same thing, but the numbers sound very different.
Where the conversion appears
Planting densities
A commercial vineyard has about 5,000 vines per hectare, which is one vine for every 2 m². An apple orchard with 2,000 trees per hectare gives each tree 5 m². A forest plantation of 2,500 seedlings per hectare uses 4 m² each, a grid of 2 by 2 metres. Foresters and growers move between the two units constantly, so a “convert ha to m²” calculation is routine.
Farm inputs and yields
A fertiliser dose of 100 kg per hectare is 10 g per square metre. A seed rate of 200 kg of wheat per hectare is 20 g per square metre, about 450 grains. A yield of 7 tonnes per hectare is 700 g per square metre. The numbers per square metre are easier to picture on a small plot.
Rain and irrigation
A millimetre of rain on a hectare is 10 cubic metres of water, 10,000 litres. A shower of 25 mm delivers 250 m³ per hectare. Irrigation of 30 mm a week on 5 ha uses 1,500 m³. Water engineers calculate in cubic metres per hectare, while individual gardeners think in litres per square metre.
Solar parks
A ground mounted solar park needs about 1 to 1.5 hectares per megawatt, 10,000 to 15,000 m². A 50 MW plant therefore covers 50 to 75 ha, 500,000 to 750,000 m². Developers state the footprint in hectares, while panel manufacturers give power per square metre, so a conversion is necessary to estimate efficiency.
Pesticide and herbicide doses
A spraying dose of 2 litres per hectare is 0.2 ml per square metre, a very small amount, applied with a volume of water of 200 litres per hectare, 20 ml per square metre. Labels give doses per hectare, and garden users must scale down by 10,000 to apply the product on a small plot, which is where a conversion of units is vital for safety.
Land prices
A price of 5 euros per square metre is 50,000 euros per hectare. A price of 30 euros per square metre, typical near cities, is 300,000 euros per hectare. Agricultural land is usually quoted per hectare, building land per square metre, so the two worlds are separated by a factor of 10,000.
Building land and coverage
A plot of 0.5 ha, 5,000 m², with a permitted coverage of 30 per cent allows a footprint of 1,500 m². The same plot with a floor area ratio of 0.6 permits 3,000 m² of floors. Planning rules mix per cent of plot and ratios, and the plot itself is stated in hectares or square metres.
Compost, manure and organic matter
Farm manure is applied at 20 tonnes per hectare, 2 kg per square metre. A compost layer of 5 cm over one hectare takes 500 m³. Organic farmers convert these figures daily when moving between field scale planning and garden scale practice, and a “convert ha to m²” calculation is the basis.
Birds, insects and biodiversity
Ecologists report bird densities such as 20 pairs per 10 hectares, 2 pairs per hectare, one pair per 5,000 m². Insect surveys use plots of 1 m². The same data can be presented at both scales, and conversion lets researchers compare results from different habitats.
Rounding
The factor 10,000 is exact, so rounding is only for presentation. Give as many digits as your source: 1.2 ha is 12,000 m², but 1.23 ha is 12,300 m². Avoid adding zeros that suggest accuracy you do not have.
Spreadsheet use
Put hectares in column A and write =A2*10000 in column B. For the reverse use =B2/10000. Format with no decimals for large areas. A third column dividing by 100 gives ares, a useful middle unit.
Teaching the idea
Mark a square of 100 by 100 metres in a field using stakes and rope, then divide it into strips of 10 by 100 metres. Each strip is 1,000 m², and ten strips make the hectare. Students can walk the sides and feel the difference between one metre and one hundred metres.
Historic land units
Before the metric system, land was measured in acres, arpents, morgens and many other local units. The hectare replaced them by being exact, decimal and easy to calculate. A hectare is 10,000 m², the square metre being the unit that defines it, which also made land surveying easier.
Cemeteries and memorial parks
A cemetery of 5 ha, 50,000 m², can hold roughly 25,000 graves if each plot is 2 m² and about half the area is given to paths, trees and buildings. Cemetery managers think in hectares for the site and in square metres for each plot, so a “convert ha to m²” calculation is part of long range planning, particularly in cities where land is scarce.
Sunshine per hectare
On a clear day at noon the sun delivers about 1,000 watts to each square metre. A hectare therefore receives 10 megawatts. A solar farm with a 20 per cent efficient system turns that into 2 MW at the peak, though the average over a year is only about 15 to 25 per cent of the peak. The calculation is built on the factor 10,000.
Airfields and runways
A small airfield with a 1,200 metre grass runway 30 metres wide uses 36,000 m², 3.6 ha, for the runway alone. The whole site with hangars and parking might be 40 ha. Aviation authorities require clearances in metres, but land agreements are written in hectares.
Gardens, allotments and urban farms
An urban farm of 0.5 ha, 5,000 m², can supply vegetables for about 100 families, if intensively managed. A community garden of 0.1 ha is 1,000 m², space for 20 plots of 50 m². City planners describe the farm in hectares for zoning and the plots in square metres for allocation, so both units appear in one project description.
Windbreaks and hedgerows
A windbreak 500 metres long and 10 metres wide covers 5,000 m², half a hectare, and protects a field ten times its height in the lee. For a farm of 100 ha, a network of such belts may take 3 to 5 per cent of the land. Planning the strips requires both units, because belts are measured in metres and fields in hectares.
Why a hectare, not a square hectometre
Strictly speaking, the area of a square of 100 metres could be called a square hectometre, and in the SI scheme that is what it is. The name hectare was kept because the farming community had already adopted it. A hectare is therefore a special name for a square hectometre, exactly like a litre is a special name for a cubic decimetre. Knowing this explains why the unit sits slightly apart from the rest of the system but converts with perfect round factors, which any convert ha to m² confirms.
A picture of a hectare
Walk 100 steps along a field edge, turn, and walk 100 more: the square you have drawn is about a hectare, about a hundred and eight thousand square feet of ground.
Housing density
A neighbourhood of 30 homes per hectare gives each home 333 m² of land, including streets and green space. A density of 10 homes per hectare means 1,000 m² each, typical of low density suburbs. Planners state density per hectare, and a “convert ha to m²” calculation shows the land per home, which is what buyers see.
Green space per person
The World Health Organization is often cited as recommending at least 9 m² of urban green space per person. One hectare of park then serves 1,111 people. A city of 100,000 inhabitants would need 90 ha. National laws set their own values, sometimes higher, and compliance is checked by converting hectares of parks to square metres per resident.
Maize, potatoes and sunflowers
Maize is grown at about 70,000 plants per hectare, 7 per square metre. Potatoes at 40,000 tubers per hectare, 4 per square metre. Sunflowers at 60,000 plants, 6 per square metre. Seed catalogues state density per hectare, but a gardener sowing a small bed thinks in plants per square metre, so a conversion is needed.
Warehouses and logistics parks
A logistics park of 20 ha has 200,000 m² of land, on which perhaps 100,000 m² of buildings stand, a coverage of 50 per cent. A single warehouse of 1 ha, 10,000 m², fits about 12,000 pallets. Investors compare parks by hectares, and tenants by square metres of floor.
Schools and campuses
A secondary school may need 3 to 5 ha, 30,000 to 50,000 m², including pitches. A university campus of 40 ha has 400,000 m² of land. Planning guidelines express the requirement per pupil in square metres, for example 20 m² per student, so a “convert ha to m²” calculation translates site area into capacity.
Sports grounds
A football pitch of 105 by 68 metres has 7,140 m², 0.714 ha. A rugby ground with in goals can reach 12,000 m², 1.2 ha. A golf course of 60 ha has 600,000 m². The comparison with the pitch is a favourite of journalists: 10 ha is 14 football pitches.
Fish ponds and aquaculture
A carp pond of 5 ha has 50,000 m² of water surface. At a stocking density of 1,500 fish per hectare, 0.15 per square metre, it holds 7,500 fish. Fish farmers describe ponds in hectares, but feeding and aeration are calculated per square metre.
More values for convert ha to m²
A longer list of conversions
If the value you need is not in the first list, these further conversions may be close enough to read off directly:
- 0.1 ha = 1,000 m²
- 0.5 ha = 5,000 m²
- 3 ha = 30,000 m²
- 4 ha = 40,000 m²
- 7 ha = 70,000 m²
- 15 ha = 150,000 m²
- 20 ha = 200,000 m²
- 75 ha = 750,000 m²
- 200 ha = 2,000,000 m²
- 500 ha = 5,000,000 m²
- 2,000 ha = 20,000,000 m²
- 10,000 ha = 100,000,000 m²
Mistakes when you convert ha to m²
Multiplying by 100
That is the linear factor. For area, multiply by 10,000.
Dividing instead of multiplying
The square metre is smaller, so the number grows. If 3 ha became 0.0003, you divided.
Moving the point two places
Move it four. If you moved only two, the answer is a hundred times too small.
Quick answers
How many square metres in a hectare?
10,000.
How do I convert ha to m²?
Multiply by 10,000.
What is 2.5 ha in m²?
25,000 m².
How many hectares in a square kilometre?
100.
Does my number leave my device?
No. The calculation runs in your browser.
Related pages and a last word
If you work with land and area, these conversions are close at hand: Convert ha to km², Convert ha to acres, Convert ares to m², Convert mm² to m², Convert m² to cm², Convert km to mi, Convert mi to km, Convert °C to °F, Convert °F to °C. The reverse of this page is Convert m² to ha.
In short, to convert ha to m² multiply by 10,000, remember that the factor is the square of 100, and keep the digits your source supports. Your number stays on your device: nothing is uploaded and no account is needed.