Milliampere is 0.001 ampere units.
Milliamperes to Centiamperes Converter — mA to cA
Convert Milliampere (mA) to Centiampere (cA) using the exact conversion factor (1 milliampere = 0.1 centiampere). See the formula, worked examples, and conversion table.
Milliamperes to Centiamperes 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.
Centiampere is 0.01 ampere units.
Result = input x 0.001 / 0.01.
Electrical units in the same family convert directly.
Reserved above the conversion cards and below the converter.
About Converting Milliamperes to Centiamperes
Milliampere and Centiampere 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 centiampere is 0.01 ampere units.
Formula
centiamperes = milliamperes × 0.1
This factor comes from each unit's defined relationship to the category's base unit: 1 milliampere equals 0.001 base units, and 1 centiampere equals 0.01 base units, so dividing one by the other gives the direct milliampere-to-centiampere factor of 0.1.
Simple example
1 mA × 0.1 = 0.1 cA
1 milliampere = 0.1 centiamperes.
Real-world example
120 mA × 0.1 = 12 cA
120 milliamperes = 12 centiamperes.
Conversion table
| Milliampere (mA) | Centiampere (cA) |
|---|---|
| 1 mA | 0.1 cA |
| 5 mA | 0.5 cA |
| 12 mA | 1.2 cA |
| 24 mA | 2.4 cA |
| 120 mA | 12 cA |
| 240 mA | 24 cA |
Reverse conversion: Centiampere to Milliampere
0.1 cA × 10 = 1 mA
0.1 centiamperes = 1 milliampere.
milliamperes = centiamperes × 10
For a page dedicated to this direction, see Centiampere to Milliampere.
Understanding the Milliampere (mA)
Milliampere is 0.001 ampere units.
Understanding the Centiampere (cA)
Centiampere is 0.01 ampere units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many centiamperes are in 1 milliampere?
1 milliampere equals 0.1 centiamperes, using the exact defined conversion factor rather than an estimate.
How do I convert milliampere to centiampere?
Multiply the milliampere value by 0.1. The converter above does this instantly to whatever precision you set.
How do I convert centiampere back to milliampere?
Use the reverse factor: 1 centiampere equals 10 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 centiampere?
Centiampere (cA) is a unit of electricity.
Is the milliampere to centiampere conversion exact?
Yes. Both milliampere and centiampere are defined by fixed standards rather than physical artifacts, so the factor of 0.1 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.