This page converts microvolts into millivolts using the factor 0.001, and shows the reverse figure alongside it. Both units measure the electrical potential difference driving a current, which is why one number does the whole job.
One micro volt is one millionth of a volt (1e-6 volts). Millivolts are the working scale of sensors and thermocouples, where the whole usable signal may span less than a volt.
Below the calculator there is a step table for the values people look up most, and a second table putting real the electrical potential difference driving a current figures into millivolts so the number you get has something to be compared against.
The formula
microvolts- The amount you are converting, in microvolts
0.001- The exact number of millivolts in one microvolt
millivolts- The converted result
How it works, step by step
- Enter the value in microvolts.
- It is multiplied by 0.001, the exact factor between the two units.
- The answer is shown in millivolts, with the reverse conversion beneath it.
- Check the reference table if you want a figure of comparable size.
Worked examples
AA alkaline cell: 1.5e+06 µV in millivolts
Take aa alkaline cell, roughly 1.5e+06 µV. The conversion is a single multiplication — 1.5e+06 × 0.001 — giving 1500 mV. Because the relationship is proportional, doubling the input doubles the answer to 3000 mV.
USB bus: 5e+06 µV in millivolts
Take usb bus, roughly 5e+06 µV. The conversion is a single multiplication — 5e+06 × 0.001 — giving 5000 mV. Because the relationship is proportional, doubling the input doubles the answer to 10,000 mV.
How to read your score
Frequently asked questions
How many millivolts are in one microvolt?
Exactly 0.001. 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 microvolts to millivolts?
millivolts = microvolts × 0.001. Reversed, microvolts = millivolts ÷ 0.001, which is the same as multiplying by 1000.
Which is the bigger unit, the microvolt or the millivolt?
The millivolt. One microvolt is only 0.001 of a millivolt, so it takes 1000 microvolts to make one millivolt.
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 microvolt?
One micro volt is one millionth of a volt (1e-6 volts).
What is a millivolt?
Millivolts are the working scale of sensors and thermocouples, where the whole usable signal may span less than a volt.
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.
Microvolts to millivolts reference tables
| Microvolts | Millivolts |
|---|---|
| 0.5 µV | 0.0005 mV |
| 1 µV | 0.001 mV |
| 2 µV | 0.002 mV |
| 3 µV | 0.003 mV |
| 5 µV | 0.005 mV |
| 10 µV | 0.01 mV |
| 20 µV | 0.02 mV |
| 25 µV | 0.025 mV |
| 50 µV | 0.05 mV |
| 75 µV | 0.075 mV |
| 100 µV | 0.1 mV |
| 250 µV | 0.25 mV |
| 500 µV | 0.5 mV |
| 1000 µV | 1 mV |
| 5000 µV | 5 mV |
Exact factor: 1 microvolt = 0.001 millivolts.
| Quantity | µV | mV |
|---|---|---|
| AA alkaline cell | 1.5e+06 µV | 1500 mV |
| USB bus | 5e+06 µV | 5000 mV |
| Car battery | 1.26e+07 µV | 1.26e+04 mV |
| UK mains | 2.3e+08 µV | 2.3e+05 mV |
| US mains | 1.2e+08 µV | 1.2e+05 mV |
| Overhead distribution line | 1.1e+10 µV | 1.1e+07 mV |
Published reference values, converted with the same factor this page uses.