Electrical
AtopA
Convert amperes (A) to picoamperes (pA).
Factor1 A = 1e+12 pA
Converter
A
Accepts numbers or expressions, e.g. 150 + 14.7
Result
pA
Rendered to 6 significant figures.
Formula
Formula
pA = A × 1e+12
Multiply any value in amperes by 1e+12 to obtain the value in picoamperes.
Worked example
Convert 1 A to pA.
- 01Start with 1 A.
- 02Multiply by the conversion factor: 1 × 1e+12 = 1e+12 pA.
Result1 A = 1e+12 pA
Conversion table
| A | pA |
|---|---|
| 1 | 1e+12 |
| 2 | 2e+12 |
| 5 | 5e+12 |
| 10 | 1e+13 |
| 20 | 2e+13 |
| 50 | 5e+13 |
| 100 | 1e+14 |
| 200 | 2e+14 |
| 500 | 5e+14 |
| 1000 | 1e+15 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from A to pA?
1 A equals 1e+12 pA. To convert, multiply the value in amperes by 1e+12.
How do I convert 1 A to pA?
1 A = 1e+12 pA. For any value, multiply by 1e+12.
How do I convert pA back to A?
Divide by the same factor — or equivalently, multiply by 1e-12. So 1 pA = 1e-12 A.
When would I need to convert ampere to picoampere?
Current conversions between A and pA appear in motor and cable sizing, instrumentation loop design (4–20 mA), battery characterisation and electronics. Amperes are standard for power circuits; milliamperes and microamperes are the working units for signal conditioning and sensor outputs.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).