Square kilometers
What is a square kilometer? One square kilometer equals exactly 1,000,000 m². Convert km² to mm², cm², m² and 8 more units.
About these units
One square kilometer equals exactly 1,000,000 m².
Also known as
km2 · km² · square kilometer · square kilometers · square kilometre · square kilometres · km^2
Source: BIPM SI Brochure, 9th edition — SI prefixes and accepted non-SI units
Related conversions
square kilometers to square meterssquare kilometers to acressquare kilometers to square centimeterssquare kilometers to hectaressquare kilometers to square millimeterssquare kilometers to square feetsquare kilometers to square inchessquare kilometers to square milessquare kilometers to square yardssquare kilometers to aressquare kilometers to square decimeters
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