To convert millivolts to kilovolts, multiply by 1e-06. That factor is the whole relationship: both units measure the electrical potential difference driving a current, so the conversion is a proportion with no offset and no substance-specific constant.
Millivolts are the working scale of sensors and thermocouples, where the whole usable signal may span less than a volt. Kilovolts describe distribution lines, ignition systems and insulation ratings — the level at which air itself starts to conduct.
Two tables follow: rounded steps for quick lookup, and a set of real reference quantities converted into kilovolts, which is usually more useful than the bare number.
The formula
millivolts- The amount you are converting, in millivolts
1e-06- The exact number of kilovolts in one millivolt
kilovolts- The converted result
How it works, step by step
- Enter the value in millivolts.
- It is multiplied by 1e-06, the exact factor between the two units.
- The answer is shown in kilovolts, with the reverse conversion beneath it.
- Check the reference table if you want a figure of comparable size.
Worked examples
AA alkaline cell: 1500 mV in kilovolts
At 1500 mV (aa alkaline cell), the same quantity in kilovolts is 1500 × 1e-06 = 0.0015 kV. One millivolt is 1e-06 kilovolts, so the numbers shrink as expected.
Car battery: 1.26e+04 mV in kilovolts
At 1.26e+04 mV (car battery), the same quantity in kilovolts is 1.26e+04 × 1e-06 = 0.0126 kV. One millivolt is 1e-06 kilovolts, so the numbers shrink as expected.
How to read your score
Frequently asked questions
How many kilovolts are in one millivolt?
Exactly 1e-06. Every figure on this page is that one number multiplied by your input, so the only rounding is at the display step.
What is the formula to convert millivolts to kilovolts?
kilovolts = millivolts × 1e-06. Reversed, millivolts = kilovolts ÷ 1e-06, which is the same as multiplying by 1,000,000.
Which is the bigger unit, the millivolt or the kilovolt?
The kilovolt. One millivolt is only 1e-06 of a kilovolt, so it takes 1e+06 millivolts to make one kilovolt.
What does this quantity actually measure?
Both units measure the electrical potential difference driving a current. That is why a single factor is enough: there is no temperature offset and no material property involved, unlike conversions that cross between different quantities.
What is a millivolt?
Millivolts are the working scale of sensors and thermocouples, where the whole usable signal may span less than a volt.
What is a kilovolt?
Kilovolts describe distribution lines, ignition systems and insulation ratings — the level at which air itself starts to conduct.
Why does my answer differ from another converter?
Almost always because the other tool rounded the factor before multiplying. This page keeps full double precision through the calculation and rounds only for display, and it prints the factor it used so you can see where any difference came from.
Millivolts to kilovolts reference tables
| Millivolts | Kilovolts |
|---|---|
| 0.5 mV | 5e-07 kV |
| 1 mV | 1e-06 kV |
| 2 mV | 2e-06 kV |
| 3 mV | 3e-06 kV |
| 5 mV | 5e-06 kV |
| 10 mV | 1e-05 kV |
| 20 mV | 2e-05 kV |
| 25 mV | 2.5e-05 kV |
| 50 mV | 5e-05 kV |
| 75 mV | 7.5e-05 kV |
| 100 mV | 0.0001 kV |
| 250 mV | 0.00025 kV |
| 500 mV | 0.0005 kV |
| 1000 mV | 0.001 kV |
| 5000 mV | 0.005 kV |
Exact factor: 1 millivolt = 1e-06 kilovolts.
| Quantity | mV | kV |
|---|---|---|
| AA alkaline cell | 1500 mV | 0.0015 kV |
| USB bus | 5000 mV | 0.005 kV |
| Car battery | 1.26e+04 mV | 0.0126 kV |
| UK mains | 2.3e+05 mV | 0.23 kV |
| US mains | 1.2e+05 mV | 0.12 kV |
| Overhead distribution line | 1.1e+07 mV | 11 kV |
Published reference values, converted with the same factor this page uses.