How do I convert square kilometres to hectares?

Multiply by 100. So 100 square kilometres × 100 = 10,000 hectares. Because a hectare is the smaller unit, the number always gets larger — a useful check that you have not divided where you should have multiplied.

What is 1,000 square kilometres in hectares?

1,000 square kilometres is 100,000 hectares. The full sequence for round numbers: 1 square kilometre = 100 hectares, 10 square kilometres = 1,000 hectares, 100 square kilometres = 10,000 hectares, 1,000 square kilometres = 100,000 hectares. Each step of ten in the input moves the answer one decimal place, which makes a whole scale of values easy to read off once one is known.

Is there a quick way to estimate square kilometres to hectares mentally?

Yes — count decimal places rather than doing arithmetic. Going from square kilometres to hectares moves the point 2 places right, and that is the whole calculation. The only real risk is losing count, so for large jumps it is safer to write the exponent than to count zeros: a miscount produces an answer wrong by a factor of ten, which looks entirely plausible and is not.

Which is bigger, an acre or a hectare?

A hectare, by a factor of about two and a half. One hectare is 2.4710538 acres, and one acre is 0.40468564 hectares. The useful mental version is that a hectare is two and a half acres and an acre is four tenths of a hectare. That ratio matters commercially because land is priced per unit and quoted in whichever the local convention uses — so a price per acre and a price per hectare differ by 147% before any negotiation, and comparing them without converting is a substantial error.

Why are there 640 acres in a square mile?

It falls out of the definitions rather than being chosen. A mile is 1,760 yards, so a square mile is 3,097,600 square yards, and dividing by the 4,840 square yards in an acre gives exactly 640. The convenience of that round number is why the American public land survey divided territory into six-mile-square townships of 36 sections, each section being one square mile of 640 acres — and why quarter sections of 160 acres became the standard homestead. The number shaped how a continent was parcelled out.

Is there a difference between square feet and feet squared?

In careful usage, yes. Square feet is a unit of area — a room might be 200 square feet. Feet squared, written ft², is the same unit written as a symbol, and in that sense they are identical. But "five feet squared" in speech usually means a five-foot square, which is 25 square feet rather than five. The ambiguity is real enough that specifications avoid the spoken form entirely and write either 25 ft² or "a 5 ft by 5 ft square", both of which are unambiguous.

How do I work out the area of an irregular shape?

Break it into rectangles and triangles, work each out, and add them. Any shape with straight edges decomposes that way, and both components are trivial: length times width for a rectangle, half base times height for a triangle. For curved boundaries, either approximate with a series of straight segments or measure along the centre line and treat it as a rectangle. Surveyors use more sophisticated methods, but for ordering material the decomposition approach is accurate enough and much harder to get wrong.

Are these conversions exact or approximate?

Exact. Every one descends from the 1959 International Yard and Pound Agreement, which fixed the yard at precisely 0.9144 metres — so the square yard is exactly 0.83612736 square metres and the acre, being 4,840 of them, is exactly 4,046.8564224. The hectare is exactly 10,000 square metres by definition. None of these carries measurement uncertainty; the only rounding is whatever you apply to the final answer.

Square Kilometres to Hectares Converter

Square kilometres to hectares is a hundred, exactly, and it is the cleanest conversion in this category. Both are metric, both are land units, and the relationship between them is a whole number with nothing after the point. The reason it is a hundred rather than a thousand is the same reason that runs through all of …

VALUE & FROM

100

1 square kilometer = 100 hectare · 1 square kilometer = 100 hectare

1 square kilometer IN EVERY UNIT

METRIC (SI)

METRIC LAND

IMPERIAL / US

SOUTH ASIAN LAND

EAST ASIAN LAND

CONSTRUCTION

SCIENTIFIC

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HOW TO USE

1
Type the number of square kilometres into the value box. The converter opens with square kilometres and hectares already selected, so the answer appears as you type.
2
Read the result in hectares. The conversion is a multiplication by 100, applied at full precision — the displayed rounding is for readability only.
3
Use the search box to switch either unit if you need a different pair. The same converter handles every length unit from the Planck length to the megaparsec.
4
Check the direction as a sanity test: converting to hectares must make the number larger, because a hectare is the smaller unit.

QUICK REFERENCE

1 m²

10.7639 ft²

1 ft²

0.092903 m²

1 acre

4,046.86 m²

1 hectare

2.47105 acres

1 acre

43,560 ft²

1 hectare

10,000 m²

1 sq mile

640 acres

1 km²

0.386102 mi²

1 yd²

9 ft²

1 m²

1,550 in²

ABOUT AREA UNITS

Area is measured against the square metre, the SI derived unit. Because area is length squared, each metric step is a hundredfold jump, not tenfold: a square metre is 10,000 square centimetres and 1,000,000 square millimetres. The everyday imperial units follow the same rule — a square yard is 9 square feet, and an acre is 43,560 square feet — while land is measured in acres, hectares (10,000 m²), ares and dunams. Traditional South Asian units are widely used for property: a guntha is 1⁄40 of an acre, a cent is 1⁄100 of an acre, and the bigha, katha, marla and kanal are common across India and Pakistan — though several of these vary by region, so this tool uses the most common standard values. East Asian units like the Japanese tsubo, the Korean pyeong and the Thai rai are included too, alongside the scientific barn (10⁻²⁸ m²) used for nuclear cross-sections. Every unit is stored as its exact number of square metres, so any conversion is just the input turned into square metres and then into the target unit.

FREQUENTLY ASKED QUESTIONS

One square kilometre is 100 hectares. Put the other way round, there are 0.01 square kilometres in a hectare. Both are metric, so the relationship is a pure power of ten — 2 decimal places, with no constant to remember.

1 square kilometre = 100 hectares
1 hectare = 0.01 square kilometres
A shift of 2 decimal places
10 square kilometres = 1,000 hectares

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Last updated: — · 42 area units · Exact SI & imperial definitions · Verified by the EagleCalculator team · Eagle-eyed accuracy for every calculation.