Milliampere is 0.001 ampere units.
Milliamperes to Nanoamperes Converter — mA to nA
Convert Milliampere (mA) to Nanoampere (nA) using the exact conversion factor (1 milliampere = 1,000,000 nanoampere). See the formula, worked examples, and conversion table.
Milliamperes to Nanoamperes 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.
Nanoampere is 1e-9 ampere units.
Result = input x 0.001 / 1e-9.
Electrical units in the same family convert directly.
Reserved above the conversion cards and below the converter.
About Converting Milliamperes to Nanoamperes
Milliampere and Nanoampere 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: Milliampere is 0.001 ampere units, and nanoampere is 1e-9 ampere units.
Formula
nanoamperes = milliamperes × 1000000
This factor comes from each unit's defined relationship to the category's base unit: 1 milliampere equals 0.001 base units, and 1 nanoampere equals 1e-9 base units, so dividing one by the other gives the direct milliampere-to-nanoampere factor of 1000000.
Simple example
1 mA × 1000000 = 1,000,000 nA
1 milliampere = 1,000,000 nanoamperes.
Real-world example
120 mA × 1000000 = 120,000,000 nA
120 milliamperes = 120,000,000 nanoamperes.
Conversion table
| Milliampere (mA) | Nanoampere (nA) |
|---|---|
| 1 mA | 1,000,000 nA |
| 5 mA | 5,000,000 nA |
| 12 mA | 12,000,000 nA |
| 24 mA | 24,000,000 nA |
| 120 mA | 120,000,000 nA |
| 240 mA | 240,000,000 nA |
Reverse conversion: Nanoampere to Milliampere
1 nA × 0.000001 = 0.000001 mA
1 nanoampere = 0.000001 milliamperes.
milliamperes = nanoamperes × 0.000001
For a page dedicated to this direction, see Nanoampere to Milliampere.
Understanding the Milliampere (mA)
Milliampere is 0.001 ampere units.
Understanding the Nanoampere (nA)
Nanoampere is 1e-9 ampere units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many nanoamperes are in 1 milliampere?
1 milliampere equals 1,000,000 nanoamperes, using the exact defined conversion factor rather than an estimate.
How do I convert milliampere to nanoampere?
Multiply the milliampere value by 1000000. The converter above does this instantly to whatever precision you set.
How do I convert nanoampere back to milliampere?
Use the reverse factor: 1 nanoampere equals 0.000001 milliamperes. You can also use the swap control in the converter above to flip the direction instantly.
What is a milliampere?
Milliampere (mA) is a unit of electricity.
What is a nanoampere?
Nanoampere (nA) is a unit of electricity.
Is the milliampere to nanoampere conversion exact?
Yes. Both milliampere and nanoampere are defined by fixed standards rather than physical artifacts, so the factor of 1000000 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.