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