Gigapascals to Pounds per square inch
1 gigapascal = 145,040 pounds per square inch · 1 psi = 0.0000068948 GPa
1 gigapascal = 145,040 pounds per square inch
How it’s calculated
psi = GPa × 145037.7377
- Multiply the value in gigapascals by 145037.7377.
- To go back, divide by 145037.7377 (or multiply by 0.000006894757293).
- 1 GPa = 145,037.7377 psi · 1 psi = 0.000006894757293 GPa
Show worked solutionFactor, unit cancellation and rounding, step by step
Find the conversion factor
By definition 1 GPa = 1000000000 Pa and 1 psi = 6894.75729316836 Pa, so 1 GPa = 145037.737730209 psi. Source: BIPM SI Brochure (9th ed.); NIST SP 811 / Handbook 44.
Multiply by the factor written as a fraction
Put GPa in the denominator so it cancels, leaving psi.
Calculate (unrounded)
Round the answer
Rounded to 5 significant figures.
Answer: 145040 psi
1 GPa in other units
Batch convert GPa → psi
- 1 GPa = 145040 psi
- 5 GPa = 725190 psi
- 10 GPa = 1450400 psi
- 25 GPa = 3625900 psi
Quick examples
- 1 gigapascal = 145,040 pounds per square inch
- 5 gigapascals = 725,190 pounds per square inch
- 10 gigapascals = 1,450,400 pounds per square inch
- 25 gigapascals = 3,625,900 pounds per square inch
- 100 gigapascals = 14,504,000 pounds per square inch
About these units
Gigapascal (GPa)
SI (metric)
Exactly 10⁹ Pa. Used for elastic moduli (steel ≈ 200 GPa).
1 GPa = 1000000000 Pa
Source: BIPM SI Brochure (9th ed.)
Pound per square inch (psi)
US & imperial (identical)
1 lbf/in² ≈ 6 894.757 Pa (derived from exact lbf and inch).
1 psi = 6894.757293 Pa
Source: NIST SP 811 / Handbook 44
Gigapascals to pounds per square inch conversion table
| Gigapascals (GPa) | Pounds per square inch (psi) |
|---|---|
| 1 GPa | 145,040 psi |
| 5 GPa | 725,190 psi |
| 10 GPa | 1,450,400 psi |
| 20 GPa | 2,900,800 psi |
| 25 GPa | 3,625,900 psi |
| 30 GPa | 4,351,100 psi |
| 36 GPa | 5,221,400 psi |
| 40 GPa | 5,801,500 psi |
| 50 GPa | 7,251,900 psi |
| 60 GPa | 8,702,300 psi |
| 75 GPa | 10,878,000 psi |
| 100 GPa | 14,504,000 psi |
| 150 GPa | 21,756,000 psi |
| 200 GPa | 29,008,000 psi |
| 250 GPa | 36,259,000 psi |
| 300 GPa | 43,511,000 psi |
| 355 GPa | 51,488,000 psi |
| 400 GPa | 58,015,000 psi |
| 500 GPa | 72,519,000 psi |
| 1,000 GPa | 145,040,000 psi |
Related conversions
Frequently asked questions
How do I convert gigapascals to pounds per square inch?
Use psi = GPa × 145037.7377. Multiply the value in gigapascals by 145037.7377.
How many pounds per square inch are in 1 gigapascal?
1 gigapascal (GPa) equals 145,040 pounds per square inch (psi); more precisely 145,037.7377.
How many gigapascals are in 1 pound per square inch?
1 pound per square inch (psi) equals 0.0000068948 gigapascals (GPa); more precisely 0.000006894757293.
What is 10 GPa in psi?
10 gigapascals = 1,450,400 pounds per square inch.
What is a gigapascal?
Exactly 10⁹ Pa. Used for elastic moduli (steel ≈ 200 GPa).
What is a pound per square inch?
1 lbf/in² ≈ 6 894.757 Pa (derived from exact lbf and inch).
Formula: psi = GPa × 145037.7377. Factors last reviewed 2026-10-27.