Micrometers to Millimeters
1 µm = 0.001 mm. Edit either value to convert instantly.
Conversion formula
mm = µm × (0.000001) × (1,000)1 µm = 0.001 mm
micrometer (µm)
One micrometer equals exactly 0.000001 m.
Source: BIPM SI Brochure, 9th edition — SI prefixes and accepted non-SI units
millimeter (mm)
One millimeter equals exactly 0.001 m.
Source: BIPM SI Brochure, 9th edition — SI prefixes and accepted non-SI units
Conversion table
| µm | mm |
|---|---|
| = 0.001 | |
| = 0.002 | |
| = 0.005 | |
| = 0.01 | |
| = 0.015 | |
| = 0.02 | |
| = 0.025 | |
| = 0.03 | |
| = 0.04 | |
| = 0.045 |
| µm | mm |
|---|---|
| = 0.05 | |
| = 0.06 | |
| = 0.07 | |
| = 0.08 | |
| = 0.09 | |
| = 0.1 | |
| = 0.15 | |
| = 0.16 | |
| = 0.17 | |
| = 0.18 |
Frequently asked questions
How many millimeters are in 1 micrometer?
1 µm = 0.001 mm. mm = µm × (0.000001) × (1,000)
How do I convert µm to mm?
mm = µm × (0.000001) × (1,000)
Is 1 micrometer bigger than 1 millimeter?
1 µm = 0.001 mm.
Related conversions
All quantities
Mass / weightVolumeTemperatureAreaSpeedTimePressureEnergyPowerData 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