Convert Gigaamperes to Femtoamperes
Convert Gigaamperes (GA) to Femtoamperes (fA) instantly and accurately.
Conversion Formula
fA = GA × 1.000000000e+24
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.
About Femtoamperes
The femtoampere (fA) equals 10⁻¹⁵ A, encountered in patch-clamp background noise, advanced CMOS sub-threshold leakage, and electrochemical scanning probe measurements. Individual ion channels in biological membranes produce baseline noise currents of a few femtoamperes; the off-state leakage of a modern 3 nm transistor is well below 1 fA per device. 1 fA = 10⁻³ pA = 10³ aA.
Quick Reference Table
| Gigaamperes (GA) | Femtoamperes (fA) |
|---|---|
| 1 GA | 1 × 1024 fA |
| 2 GA | 2 × 1024 fA |
| 5 GA | 5 × 1024 fA |
| 10 GA | 1 × 1025 fA |
| 25 GA | 2.5 × 1025 fA |
| 50 GA | 5 × 1025 fA |
| 100 GA | 1 × 1026 fA |