Square Kilometer (km²)
A square kilometer is one million square meters — a convenient scale for towns, lakes, and protected areas.
Square kilometers appear on maps, census data, and environmental reports worldwide.
Square Kilometer to Acre
Convert square kilometer to acre instantly. Type in either field — results update live.
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Area Square Kilometer Acre
1 square kilometer = 247.1053814672 acres
Unit
Unit
Conversion table
Selected km² values converted to ac using the exact factor from this tool.
| km² | ac |
|---|---|
| 0.01 | 2.4710538147 |
| 0.1 | 24.7105381467 |
| 1 | 247.1053814672 |
| 2 | 494.2107629343 |
| 3 | 741.3161444015 |
| 5 | 1,235.5269073358 |
| 10 | 2,471.0538146717 |
| 20 | 4,942.1076293433 |
| 50 | 12,355.2690733583 |
| 100 | 24,710.5381467165 |
| 1,000 | 247,105.3814671653 |
How to convert
Exact conversion factors in both directions, plus a worked example.
1 km² = 247.1053814672 ac
1 ac = 0.0040468564 km²
To convert square kilometer to acre, multiply by 247.1053814672.
To convert acre to square kilometer, multiply by 0.0040468564.
Example: convert 10 km² to ac
10 × 247.1053814672 = 2471.0538146717 ac
About these units
Short background on the units used in this conversion.
Acre (ac)
An acre is 43,560 square feet, or exactly 4,046.8564224 square meters — a traditional land measure.
Acres parcel farmland, suburban lots, and parks in the United States, UK, and several Commonwealth countries.
Frequently asked questions
How many acres are in one square kilometer?
One square kilometer equals 247.1053814672 acres. Multiply your square kilometers value by 247.1053814672 to convert to acres.
What is the conversion formula?
ac = km² × 247.1053814672The reverse is
km² = ac × 0.0040468564, using the same exact factors as this converter.Is this Square Kilometer to Acre converter private?
Yes. All calculations run locally in your browser. Nothing you type is sent to a server.
All square kilometer conversions
Jump to any area conversion starting from square kilometer — including the reverse direction and every other unit in our dataset.
acre (ac) → square kilometer (km²)
square kilometer (km²) → square meter (m²)square kilometer (km²) → square centimeter (cm²)square kilometer (km²) → square millimeter (mm²)square kilometer (km²) → square micrometer (µm²)square kilometer (km²) → square nanometer (nm²)square kilometer (km²) → square decimeter (dm²)square kilometer (km²) → square dekameter (dam²)square kilometer (km²) → square hectometer (hm²)square kilometer (km²) → hectare (ha)square kilometer (km²) → are (a)square kilometer (km²) → barn (b)square kilometer (km²) → square mile (mi²)square kilometer (km²) → square mile (us survey) (mi² surv)square kilometer (km²) → sectionsquare kilometer (km²) → square yard (yd²)square kilometer (km²) → square foot (ft²)square kilometer (km²) → square foot (us survey) (ft² surv)square kilometer (km²) → sabinsquare kilometer (km²) → square inch (in²)square kilometer (km²) → circular inch (circ in)square kilometer (km²) → acre (us survey) (ac surv)square kilometer (km²) → square rod (rd²)square kilometer (km²) → square rod (us survey) (rd² surv)square kilometer (km²) → square perch (perch²)square kilometer (km²) → square pole (pole²)square kilometer (km²) → square chain (ch²)square kilometer (km²) → roodsquare kilometer (km²) → township (twp)square kilometer (km²) → homesteadsquare kilometer (km²) → square mil (mil²)square kilometer (km²) → circular mil (circ mil)square kilometer (km²) → square nautical mile (NM²)square kilometer (km²) → arpentsquare kilometer (km²) → cuerdasquare kilometer (km²) → plazasquare kilometer (km²) → varas castellanas cuad (varas cast.)square kilometer (km²) → varas conuqueras cuad (varas con.)square kilometer (km²) → electron cross section (σₑ)