Volts to Microvolts (V → µV)

One volt equals one million microvolts, so multiply by \(10^6\) to convert.

Example: \( 0.005 \text{ V} \rightarrow V_{(\mu\text{V})} = 0.005 \times 1{,}000{,}000 = 5{,}000 \,\mu\text{V} \).

Microvolts to Volts (µV → V)

One microvolt is \(10^{-6}\) volts, so divide by 1,000,000 to convert to volts.

Example: \( 250{,}000 \,\mu\text{V} \rightarrow V_{(\text{V})} = \frac{250{,}000}{1{,}000{,}000} = 0.25 \text{ V} \).

Metric Prefix Relationship

The prefix “micro” (µ) in SI units always means \(10^{-6}\), while “kilo” (k) means \(10^{3}\) and “milli” (m) means \(10^{-3}\).

1. Start from your measured volts

Take the measured voltage in volts from your DAQ, oscilloscope, biosignal front end, or simulation output. For microvolt‑level biosignals, this is often a small fraction of a volt after amplification.

2. Multiply by \(10^6\)

Apply the formula \( V_{(\mu\text{V})} = V_{(\text{V})} \times 10^{6} \). If your EEG signal after amplification is \(0.000050 \text{ V}\), then \( V_{(\mu\text{V})} = 0.000050 \times 10^{6} = 50 \,\mu\text{V} \).

3. Use scientific notation for very small or large values

For instrument datasheets or research reports, express results like \( 0.000001 \text{ V} \) as \( 1 \,\mu\text{V} \) or \( 1 \times 10^{-6} \text{ V} \) for clarity, depending on the audience.

4. Verify by converting back

Confirm your calculation by using the inverse formula \( V_{(\text{V})} = V_{(\mu\text{V})} \times 10^{-6} \). This quick check prevents unit mix‑ups in sensitive designs like biomedical amplifiers.

How do I quickly convert V to µV in my head?

Move the decimal point six places to the right. Example: \(0.0002 \text{ V} \rightarrow 200 \,\mu\text{V}\).

Why do EEG and ECG signals use microvolts?

Brain and heart biosignals are extremely small, often from a few µV to a few mV at the skin. Microvolt units match their natural scale and make it easier to compare amplitudes, noise levels, and amplifier gains.

What is the difference between µV, mV, and V?

They are all volts with different prefixes: \(1 \text{ V} = 1000 \text{ mV} = 1{,}000{,}000 \,\mu\text{V}\). Microvolts are ideal for tiny signals, millivolts for moderate analog signals, and volts for supplies and logic levels.

How accurate is this online converter?

The conversion itself is exact because it is based on the SI definition \(1 \text{ V} = 10^{6} \,\mu\text{V}\). Any rounding you see is just for display readability and does not change the underlying ratio.