pound-force per square inch to attopascal
Convert pound-force per square inch (psi) to attopascal (aPa). Use an editable pressure converter, conversion formula, and reference table.
1 psi = 6.89475729e+21 aPa
Conversion formula
One pound-force per square inch equals 6.89475729e+21 attopascal. Multiply your value in pound-force per square inch by this factor to get attopascal. For the reverse conversion, divide by the same factor.
Worked example
To convert 5 pound-force per square inch:5 × 6.89475729e+21 = 3.44737865e+22 aPa
Conversion table
| pound-force per square inch (psi) | attopascal (aPa) |
|---|---|
| 0.01 | 6.89475729e+19 |
| 0.1 | 6.89475729e+20 |
| 1 | 6.89475729e+21 |
| 2 | 1.37895146e+22 |
| 5 | 3.44737865e+22 |
| 10 | 6.89475729e+22 |
| 25 | 1.72368932e+23 |
| 50 | 3.44737865e+23 |
| 100 | 6.89475729e+23 |
| 1000 | 6.89475729e+24 |
About these measurements
Pressure is force per unit of area.
The base reference used here is the pascal. One pound-force per square inch is 6,894.757293 base units; one attopascal is 1e-18 base units.
Important distinctions
Gauge and absolute pressures must not be mixed. This converts units without changing the reference pressure.
Precision
The converter uses stored conversion factors and floating-point arithmetic. Results display up to ten significant digits, switching to scientific notation for very small or large values. Keep the precision of your original measurement when reporting results.
Common questions
How do I convert psi to aPa?
Multiply the quantity in psi by 6.89475729e+21. You can also type the value into the converter above.
Can I reverse the conversion?
Yes. Use the swap button or open the attopascal to pound-force per square inch converter.
Reference
NIST Guide to the SI — conversion factors and prefix conventions. SI prefixes scale units by powers of ten; the dimension-specific notes above describe the assumptions used on this page.
