Centiampere is 0.01 ampere units.
Centiamperes to Megaamperes Converter — cA to MA
Convert Centiampere (cA) to Megaampere (MA) using the exact conversion factor (1 centiampere = 1e-8 megaampere). See the formula, worked examples, and conversion table.
Centiamperes to Megaamperes 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.
Megaampere is 1000000 ampere units.
Result = input x 0.01 / 1e+6.
Electrical units in the same family convert directly.
Reserved above the conversion cards and below the converter.
About Converting Centiamperes to Megaamperes
Centiampere and Megaampere 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: Centiampere is 0.01 ampere units, and megaampere is 1000000 ampere units.
Formula
megaamperes = centiamperes × 1e-8
This factor comes from each unit's defined relationship to the category's base unit: 1 centiampere equals 0.01 base units, and 1 megaampere equals 1000000 base units, so dividing one by the other gives the direct centiampere-to-megaampere factor of 1e-8.
Simple example
1 cA × 1e-8 = 1e-8 MA
1 centiampere = 1e-8 megaamperes.
Real-world example
120 cA × 1e-8 = 0.0000012 MA
120 centiamperes = 0.0000012 megaamperes.
Conversion table
| Centiampere (cA) | Megaampere (MA) |
|---|---|
| 1 cA | 1e-8 MA |
| 5 cA | 5e-8 MA |
| 12 cA | 1.2e-7 MA |
| 24 cA | 2.4e-7 MA |
| 120 cA | 0.0000012 MA |
| 240 cA | 0.0000024 MA |
Reverse conversion: Megaampere to Centiampere
1e-8 MA × 100000000 = 1 cA
1e-8 megaamperes = 1 centiampere.
centiamperes = megaamperes × 100000000
For a page dedicated to this direction, see Megaampere to Centiampere.
Understanding the Centiampere (cA)
Centiampere is 0.01 ampere units.
Understanding the Megaampere (MA)
Megaampere is 1000000 ampere units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many megaamperes are in 1 centiampere?
1 centiampere equals 1e-8 megaamperes, using the exact defined conversion factor rather than an estimate.
How do I convert centiampere to megaampere?
Multiply the centiampere value by 1e-8. The converter above does this instantly to whatever precision you set.
How do I convert megaampere back to centiampere?
Use the reverse factor: 1 megaampere equals 100,000,000 centiamperes. You can also use the swap control in the converter above to flip the direction instantly.
What is a centiampere?
Centiampere (cA) is a unit of electricity.
What is a megaampere?
Megaampere (MA) is a unit of electricity.
Is the centiampere to megaampere conversion exact?
Yes. Both centiampere and megaampere are defined by fixed standards rather than physical artifacts, so the factor of 1e-8 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.