Convert Milliamperes to Gigaamperes
Convert Milliamperes (mA) to Gigaamperes (GA) instantly and accurately.
Conversion Formula
GA = mA × 1.000000000e-12
About Milliamperes
The milliampere (mA) equals 10⁻³ A, the everyday unit in consumer electronics and safety standards. Standard LEDs operate at 5-30 mA; USB 2.0 ports supply up to 500 mA; USB-C fast-charging delivers 3 000-5 000 mA. The milliampere is also the clinically important range for electric shock - ventricular fibrillation threshold is around 100 mA, and 1 mA is the threshold of perception. 1 mA = 10⁻³ A = 10³ µA.
About Gigaamperes
The gigaampere (GA) equals 10⁹ A, a scale that lies beyond any man-made device and arises only in extreme astrophysical or geophysical contexts. Large-scale magnetospheric Birkeland field-aligned currents between Earth's ionosphere and magnetosphere are estimated at 1-10 MA total, well below 1 GA; however, pulsar magnetosphere discharge models and neutron-star lightning analogues are sometimes expressed in gigaampere terms. 1 GA = 10⁹ A = 10³ MA.
Quick Reference Table
| Milliamperes (mA) | Gigaamperes (GA) |
|---|---|
| 1 mA | 1 × 10-12 GA |
| 2 mA | 2 × 10-12 GA |
| 5 mA | 5 × 10-12 GA |
| 10 mA | 1 × 10-11 GA |
| 25 mA | 2.5 × 10-11 GA |
| 50 mA | 5 × 10-11 GA |
| 100 mA | 1 × 10-10 GA |