mA/cm2\text{mA/cm}^{2}

milliampere per square centimeter

Current density

One milliampere per square centimetre, equal to 10 A/m². It is the working unit of fuel cell and electrolyser performance, where a polarisation curve plots cell voltage against current density in exactly these terms.

Watch out: Do not confuse it with mA/m², which is a thousand times smaller and is the cathodic-protection unit. The two are written almost identically and mean very different things.

1 mA/cm2\text{mA/cm}^{2} 10 A/m2\text{A/m}^{2}

One milliampere per square centimeter in every current density unit

10ampere per square meter (A/m²)
10,000milliampere per square meter (mA/m²)
0.001ampere per square centimeter (A/cm²)
1milliampere per square centimeter (mA/cm²)this unit
1,000microampere per square centimeter (µA/cm²)
0.92903ampere per square foot (A/ft²)