Convert Picoamperes to Amperes
Convert Picoamperes (pA) to Amperes (A) instantly and accurately.
Conversion Formula
A = pA × 1.000000000e-12
About Picoamperes
The picoampere (pA) equals 10⁻¹² A, the standard scale for electrometer measurements, reverse-bias diode leakage, and single ion-channel currents in patch-clamp electrophysiology. A typical open potassium channel carries 1-20 pA; high-quality electrometer inputs resolve below 1 pA; insulation resistance measurements on cables are reported in pA at known voltage. 1 pA = 10⁻³ nA = 10³ fA.
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
| Picoamperes (pA) | Amperes (A) |
|---|---|
| 1 pA | 1 × 10-12 A |
| 2 pA | 2 × 10-12 A |
| 5 pA | 5 × 10-12 A |
| 10 pA | 1 × 10-11 A |
| 25 pA | 2.5 × 10-11 A |
| 50 pA | 5 × 10-11 A |
| 100 pA | 1 × 10-10 A |