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Voltage converter

Voltage Converter – 5 Units, Exact Factors

1 millivolt = 0.001 volts

1 mV = 0.001 V (exact)
From
  • VoltsV
  • MillivoltsmV
  • MicrovoltsµV
  • KilovoltskV
  • MegavoltsMV
To
  • Volts0.001V
  • Millivolts1mV
  • Microvolts1,000µV
  • Kilovolts0.000001kV
  • MegavoltsMV

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About voltage conversions

V, mV, µV, kV.

Common voltage conversions

Voltage units explained

UnitSystemDefinition and notes
Volt (V)SI (metric)Base unitThe SI unit of electric potential difference: 1 W/A.
Millivolt (mV)SI (metric)1 mV = 0.001 V (exact)
Microvolt (µV)SI (metric)1 µV = 0.000001 V (exact)
Kilovolt (kV)SI (metric)1 kV = 1,000 V (exact)
Megavolt (MV)SI (metric)1 MV = 1,000,000 V (exact)

Millivolts to volts conversion table

millivolt (mV) to volt (V)
Millivolts (mV)Volts (V)
0.1 mV0.0001 V
0.5 mV0.0005 V
1 mV0.001 V
2 mV0.002 V
3 mV0.003 V
4 mV0.004 V
5 mV0.005 V
6 mV0.006 V
7 mV0.007 V
8 mV0.008 V
9 mV0.009 V
10 mV0.01 V
15 mV0.015 V
20 mV0.02 V
25 mV0.025 V
30 mV0.03 V
40 mV0.04 V
50 mV0.05 V
75 mV0.075 V
100 mV0.1 V
250 mV0.25 V
500 mV0.5 V
1,000 mV1 V

Frequently asked questions

Which voltage units can I convert?

volts (V), millivolts (mV), microvolts (µV), kilovolts (kV), megavolts (MV).

How accurate are the results?

Every unit is stored with its exact defining factor (NIST SP 811, NIST Handbook 44 or the BIPM SI Brochure). Calculations use double-precision arithmetic and are rounded only for display, to 5 significant figures by default (trailing zeros dropped, so 1 km shows as 1000 m). You can choose Auto (up to 10 digits), fixed decimals or more significant figures, or switch to scientific or engineering notation.