Convert Femtoamperes to Amperes
Convert Femtoamperes (fA) to Amperes (A) instantly and accurately.
Conversion Formula
A = fA × 1.000000000e-15
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.
About Amperes
The ampere (A) is the SI base unit of electric current, defined since 2019 by fixing the elementary charge e = 1.602 176 634 × 10⁻¹⁹ C. One ampere corresponds to approximately 6.241 × 10¹⁸ electrons passing a cross-section per second. Common benchmarks: a 60 W incandescent lamp draws 0.5 A at 120 V; household circuit breakers protect at 10-30 A; a car starter motor draws 100-200 A on cranking.
Quick Reference Table
| Femtoamperes (fA) | Amperes (A) |
|---|---|
| 1 fA | 1 × 10-15 A |
| 2 fA | 2 × 10-15 A |
| 5 fA | 5 × 10-15 A |
| 10 fA | 1 × 10-14 A |
| 25 fA | 2.5 × 10-14 A |
| 50 fA | 5 × 10-14 A |
| 100 fA | 1 × 10-13 A |