Millivolt is 0.001 volt units.
Millivolts to Hectovolts Converter — mV to hV
Convert Millivolt (mV) to Hectovolt (hV) using the exact conversion factor (1 millivolt = 0.00001 hectovolt). See the formula, worked examples, and conversion table.
Millivolts to Hectovolts converter
Converter
Electricity Converter
Convert electrical units by family and calculate voltage, current, resistance, power, and energy with context values.
Context values
Some unit families need one extra value for a physically accurate result.
Hectovolt is 100 volt units.
Result = input x 0.001 / 100.
Electrical units in the same family convert directly.
Reserved above the conversion cards and below the converter.
About Converting Millivolts to Hectovolts
Millivolt and Hectovolt both belong to the electricity family — voltage, current, resistance, power, or energy — units that show up constantly when working across the different standards used by household wiring (120V/240V depending on region), automotive electrical systems (12V/24V), and electronics design. Specifically: Millivolt is 0.001 volt units, and hectovolt is 100 volt units.
Formula
hectovolts = millivolts × 0.00001
This factor comes from each unit's defined relationship to the category's base unit: 1 millivolt equals 0.001 base units, and 1 hectovolt equals 100 base units, so dividing one by the other gives the direct millivolt-to-hectovolt factor of 0.00001.
Simple example
1 mV × 0.00001 = 0.00001 hV
1 millivolt = 0.00001 hectovolts.
Real-world example
120 mV × 0.00001 = 0.0012 hV
120 millivolts = 0.0012 hectovolts.
Conversion table
| Millivolt (mV) | Hectovolt (hV) |
|---|---|
| 1 mV | 0.00001 hV |
| 5 mV | 0.00005 hV |
| 12 mV | 0.00012 hV |
| 24 mV | 0.00024 hV |
| 120 mV | 0.0012 hV |
| 240 mV | 0.0024 hV |
Reverse conversion: Hectovolt to Millivolt
0.00001 hV × 100000 = 1 mV
0.00001 hectovolts = 1 millivolt.
millivolts = hectovolts × 100000
For a page dedicated to this direction, see Hectovolt to Millivolt.
Understanding the Millivolt (mV)
Millivolt is 0.001 volt units.
Understanding the Hectovolt (hV)
Hectovolt is 100 volt units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many hectovolts are in 1 millivolt?
1 millivolt equals 0.00001 hectovolts, using the exact defined conversion factor rather than an estimate.
How do I convert millivolt to hectovolt?
Multiply the millivolt value by 0.00001. The converter above does this instantly to whatever precision you set.
How do I convert hectovolt back to millivolt?
Use the reverse factor: 1 hectovolt equals 100,000 millivolts. You can also use the swap control in the converter above to flip the direction instantly.
What is a millivolt?
Millivolt (mV) is a unit of electricity.
What is a hectovolt?
Hectovolt (hV) is a unit of electricity.
Is the millivolt to hectovolt conversion exact?
Yes. Both millivolt and hectovolt are defined by fixed standards rather than physical artifacts, so the factor of 0.00001 used above is exact to as many digits as you choose to display.
What's the difference between voltage, current, and resistance?
Voltage (volts) is the electrical potential difference driving current through a circuit. Current (amperes) is the rate of flow of electric charge. Resistance (ohms) is how much a component opposes that flow. They're related by Ohm's law (V = I × R), but they are distinct physical quantities, and this page converts between units of just one of them.