Square kilometers to Acres
1 km² ≈ 247.1 acre. Edit either value to convert instantly.
Conversion formula
acre = km² × (1,000,000) × (78,125 / 316,160,658)1 km² ≈ 247.105 acre
square kilometer (km²)
One square kilometer equals exactly 1,000,000 m².
Source: BIPM SI Brochure, 9th edition — SI prefixes and accepted non-SI units
acre (acre)
An international acre is exactly 43,560 square international feet, or 4,046.8564224 m²; old US survey acres differ slightly.
Source: NIST — Revised Unit Conversion Factors for the international foot
Conversion table
| km² | acre |
|---|---|
| ≈ 247.105 | |
| ≈ 494.211 | |
| ≈ 1,235.53 | |
| ≈ 2,471.05 | |
| ≈ 3,706.58 | |
| ≈ 4,942.11 | |
| ≈ 6,177.63 | |
| ≈ 7,413.16 | |
| ≈ 9,884.22 | |
| ≈ 11,119.7 |
| km² | acre |
|---|---|
| ≈ 12,355.3 | |
| ≈ 14,826.3 | |
| ≈ 17,297.4 | |
| ≈ 19,768.4 | |
| ≈ 22,239.5 | |
| ≈ 24,710.5 | |
| ≈ 37,065.8 | |
| ≈ 39,536.9 | |
| ≈ 42,007.9 | |
| ≈ 44,479 |
Frequently asked questions
How many acres are in 1 square kilometer?
1 km² ≈ 247.1 acre. acre = km² × (1,000,000) × (78,125 / 316,160,658)
How do I convert km² to acre?
acre = km² × (1,000,000) × (78,125 / 316,160,658)
Is 1 square kilometer bigger than 1 acre?
1 km² ≈ 247.1 acre.
Related conversions
All quantities
LengthMass / weightVolumeTemperatureSpeedTimePressureEnergyPowerData storageFuel economyAngleFrequencyForceTorqueDensityData transfer rateAccelerationElectric chargeElectric currentVoltageCapacitanceAbsorbed doseDynamic viscosityElectrical resistanceIlluminanceKinematic viscosityLuminanceMagnetic flux densityMass flow rateRadioactivityVolumetric flow rateElectrical conductanceEquivalent doseInductanceMagnetic fluxMolar concentrationSolution mass concentrationAmount of substanceAngular velocityCountLuminous fluxLuminous intensityMagnetic field strengthMagnetomotive forceAbsorbed dose rateRadiation exposureThermal conductivity