Convert Petapascals to Pounds per Square Inch
Convert Petapascals (PPa) to Pounds per Square Inch (psi) instantly and accurately.
Conversion Formula
psi = PPa × 145037737700
About Petapascals
A petapascal (PPa) = 10¹⁵ Pa - pressures found in stellar interiors. The Sun's centre is ~25 PPa, sustained by radiation pressure from nuclear fusion balanced against gravity. White dwarf stars: ~10⁴ PPa (electron degeneracy). Neutron stars: ~10⁹-10¹⁰ PPa, where nuclear structure fails and neutrons drip from nuclei at ~4 × 10⁸ PPa (the neutron drip line). The hadron-quark phase transition in the densest neutron star cores is estimated at 10¹⁰-10¹² PPa. No laboratory experiment can approach petapascal pressures. 1 PPa = 10¹⁵ Pa.
About Pounds per Square Inch
One pound per square inch (psi) ≈ 6,894.76 Pa - the dominant pressure unit in US industry and consumer products. Car tyres: 32-36 psi; truck tyres 80-120 psi; bicycle road tyres 80-130 psi. Home water supply: 40-80 psi; residential maximum 80 psi per plumbing code. Compressed air tools: 90-150 psi. Steam autoclave sterilisation: 15-30 psi. The distinction between gauge (psig) and absolute (psia) pressure is critical: gauge pressure is relative to ambient; absolute = gauge + ~14.696 psi. 1 psi = 6,894.76 Pa.
Quick Reference Table
| Petapascals (PPa) | Pounds per Square Inch (psi) |
|---|---|
| 1 PPa | 1.45 × 1011 psi |
| 2 PPa | 2.901 × 1011 psi |
| 5 PPa | 7.252 × 1011 psi |
| 10 PPa | 1.45 × 1012 psi |
| 25 PPa | 3.626 × 1012 psi |
| 50 PPa | 7.252 × 1012 psi |
| 100 PPa | 1.45 × 1013 psi |