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Millivolts to Volts

1 millivolt = 0.001 volts · 1 V = 1,000 mV

1 millivolt = 0.001 volts

How it’s calculated

V = mV × 0.001

  • Multiply the value in millivolts by 0.001.
  • To go back, divide by 0.001 (or multiply by 1000).
  • 1 mV = 0.001 V · 1 V = 1,000 mV
Show worked solutionFactor, unit cancellation and rounding, step by step

  1. Find the conversion factor

    By definition 1 V = 1000 mV. Source: BIPM SI Brochure (9th ed.) (SI prefixes and accepted units); BIPM SI Brochure (9th ed.).

  2. Multiply by the factor written as a fraction

    Put mV in the denominator so it cancels, leaving V.

  3. Calculate (unrounded)

  4. Round the answer

    Rounded to 5 significant figures.

Answer: 0.001 V

1 mV in other units

Batch convert mV → V
Results
  1. 1 mV = 0.001 V
  2. 5 mV = 0.005 V
  3. 10 mV = 0.01 V
  4. 25 mV = 0.025 V

Permanent link to this conversion

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Quick examples

  • 1 millivolt = 0.001 volts
  • 5 millivolts = 0.005 volts
  • 10 millivolts = 0.01 volts
  • 25 millivolts = 0.025 volts
  • 100 millivolts = 0.1 volts

About these units

Millivolt (mV)

SI (metric)

1 mV = 0.001 V

Source: BIPM SI Brochure (9th ed.) (SI prefixes and accepted units)

Volt (V)

SI (metric)

SI unit of electric potential difference: 1 W/A.

Base unit

Source: BIPM SI Brochure (9th ed.)

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

Related conversions

Frequently asked questions

How do I convert millivolts to volts?

Use V = mV × 0.001. Multiply the value in millivolts by 0.001.

How many volts are in 1 millivolt?

1 millivolt (mV) equals 0.001 volts (V).

How many millivolts are in 1 volt?

1 volt (V) equals 1,000 millivolts (mV).

What is 10 mV in V?

10 millivolts = 0.01 volts.

What is a volt?

SI unit of electric potential difference: 1 W/A.

Formula: V = mV × 0.001. Factors last reviewed 2026-10-27.