Megahenry is 1000000 henry units.
Megahenrys to Petahenrys Converter — MH to PH
Convert Megahenry (MH) to Petahenry (PH) using the exact conversion factor (1 megahenry = 1e-9 petahenry). See the formula, worked examples, and conversion table.
Megahenrys to Petahenrys 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.
Petahenry is 1000000000000000 henry units.
Result = input x 1e+6 / 1e+15.
Electrical units in the same family convert directly.
Reserved above the conversion cards and below the converter.
About Converting Megahenrys to Petahenrys
Megahenry and Petahenry 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: Megahenry is 1000000 henry units, and petahenry is 1000000000000000 henry units.
Formula
petahenrys = megahenrys × 1e-9
This factor comes from each unit's defined relationship to the category's base unit: 1 megahenry equals 1000000 base units, and 1 petahenry equals 1e+15 base units, so dividing one by the other gives the direct megahenry-to-petahenry factor of 1e-9.
Simple example
1 MH × 1e-9 = 1e-9 PH
1 megahenry = 1e-9 petahenrys.
Real-world example
120 MH × 1e-9 = 1.2e-7 PH
120 megahenrys = 1.2e-7 petahenrys.
Conversion table
| Megahenry (MH) | Petahenry (PH) |
|---|---|
| 1 MH | 1e-9 PH |
| 5 MH | 5e-9 PH |
| 12 MH | 1.2e-8 PH |
| 24 MH | 2.4e-8 PH |
| 120 MH | 1.2e-7 PH |
| 240 MH | 2.4e-7 PH |
Reverse conversion: Petahenry to Megahenry
1e-9 PH × 1000000000 = 1 MH
1e-9 petahenrys = 1 megahenrys.
megahenrys = petahenrys × 1000000000
For a page dedicated to this direction, see Petahenry to Megahenry.
Understanding the Megahenry (MH)
Megahenry is 1000000 henry units.
Understanding the Petahenry (PH)
Petahenry is 1000000000000000 henry units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many petahenrys are in 1 megahenry?
1 megahenry equals 1e-9 petahenrys, using the exact defined conversion factor rather than an estimate.
How do I convert megahenry to petahenry?
Multiply the megahenry value by 1e-9. The converter above does this instantly to whatever precision you set.
How do I convert petahenry back to megahenry?
Use the reverse factor: 1 petahenry equals 1,000,000,000 megahenrys. You can also use the swap control in the converter above to flip the direction instantly.
What is a megahenry?
Megahenry (MH) is a unit of electricity.
What is a petahenry?
Petahenry (PH) is a unit of electricity.
Is the megahenry to petahenry conversion exact?
Yes. Both megahenry and petahenry are defined by fixed standards rather than physical artifacts, so the factor of 1e-9 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.