Voltage Unit Conversion Tool
In electronic engineering, power systems, laboratory measurements, medical devices, and even everyday use of consumer electronics, voltage unit conversion is a fundamental and critical operation. Whether you're working with faint bioelectric signals (in the millivolt range), standard household voltages (e.g., 220 V), or high-voltage transmission lines (thousands of volts), rapid and accurate conversion across different orders of magnitude is essential.
To meet this need, we present a professional Voltage Unit Converter that supports instant, high-precision conversion among the following three commonly used voltage units:
- Volt (V) — the base SI unit of electric potential
- Millivolt (mV) — one-thousandth of a volt; widely used in sensors and physiological signals (e.g., ECG)
- Kilovolt (kV) — equal to 1,000 volts; common in power transmission, industrial equipment, and high-voltage experiments
Simply enter a value, select the original and target units, and get an accurate result instantly!
🔁 Voltage Unit Conversion Formulas
All conversions are based on decimal SI prefixes, ensuring clear and straightforward relationships:
| Conversion Direction | Formula |
|---|---|
| V → mV | mV = V × 1,000 |
| mV → V | V = mV ÷ 1,000 |
| V → kV | kV = V ÷ 1,000 |
| kV → V | V = kV × 1,000 |
| mV → kV | kV = mV ÷ 1,000,000 |
| kV → mV | mV = kV × 1,000,000 |
💡 Did You Know?
- The generally accepted safe voltage for humans is ≤ 36 V in dry conditions.
- A standard AA battery outputs 1.5 V = 1,500 mV.
- Urban high-voltage transmission lines can reach 110 kV or even 500 kV.
⚡ Common Voltage Unit Conversion Reference Table
| Volt (V) | Millivolt (mV) | Kilovolt (kV) |
|---|---|---|
| 0.001 | 1 | 0.000001 |
| 0.01 | 10 | 0.00001 |
| 0.1 | 100 | 0.0001 |
| 1 | 1,000 | 0.001 |
| 10 | 10,000 | 0.01 |
| 100 | 100,000 | 0.1 |
| 1,000 | 1,000,000 | 1 |
| 10,000 | 10,000,000 | 10 |
| 100,000 | 100,000,000 | 100 |
✅ Practical Examples
- Electrocardiogram (ECG) signal ≈ 1–2 mV
- USB port voltage = 5 V = 5,000 mV
- Household outlet (China/Europe) = 230 V = 0.23 kV
- High-speed rail overhead line ≈ 25 kV = 25,000 V
✨ Tool Highlights
- Focused and efficient: supports only the three core units (V, mV, kV) for zero learning curve
- High-precision calculation: handles decimals and scientific notation with full accuracy
- Real-time conversion: results appear instantly as you type—no button click required
- Completely free · No ads · No registration needed
- Cross-platform compatible: works smoothly on smartphones, tablets, and computers
🌐 Try It Now!
⚡ Make voltage conversion simple, fast, and error-free!
Whether you're running circuit experiments, reading sensor data, or studying electrical fundamentals—this tool is your reliable companion.
🔌 Give it a try today and take precise control of every volt!