Convert Attoamperes to Femtoamperes
Convert Attoamperes (aA) to Femtoamperes (fA) instantly and accurately.
Conversion Formula
fA = aA × 0.001
About Attoamperes
The attoampere (aA) equals 10⁻¹⁸ A, the scale of single-electron tunnelling currents in quantum devices. Individual electrons tunnelling through a molecular junction or quantum dot produce average currents of order 1-100 aA when measured at sub-microsecond resolution; cryogenic shot-noise electrometers achieve sub-attoampere sensitivity. 1 aA = 10⁻³ fA = 10⁻¹⁸ A.
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
| Attoamperes (aA) | Femtoamperes (fA) |
|---|---|
| 1 aA | 0.001 fA |
| 2 aA | 0.002 fA |
| 5 aA | 0.005 fA |
| 10 aA | 0.01 fA |
| 25 aA | 0.025 fA |
| 50 aA | 0.05 fA |
| 100 aA | 0.1 fA |