20 Pound/sq inch to Gigapascal
Quick answer
20 Pound/sq inch (psi) equals
0.000138 GPa
To convert 20 Pound/sq inches to Gigapascals, multiply by 6.894757e-6. Therefore, 20 Pound/sq inch (psi) equals 0.000138 Gigapascal (GPa).
Formula: GPa = psi × 6.894757e-6. Calculation: 20 × 6.894757e-6 = 0.000138 GPa.
Convert Pound/sq inch (psi) to Gigapascal (GPa) online with our free unit converter. In pressure, 1 psi = 6.894757e-6 GPa. Explore step-by-step conversion steps, mathematical formulas, and quick conversion reference tables below.
Worked example: converting Pound/sq inch to Gigapascal
- Step 1 — start with the formula. GPa = psi × 0.0000068948
- Step 2 — substitute your figure. 20 psi × 6.894757e-6
- Step 3 — read the result. 20 psi = 0.000138 GPa
- Step 4 — check it in reverse. psi = GPa × 145,037.7377302168 returns 20.0152 psi, which matches the figure you started with.
Pressure Converter
29 units available
20 psi = 0.000138 GPa
Formula:
GPa = psi × 0.0000068948With your value: 20 psi = 0.0001379 GPa
Other Pound/sq inch to Gigapascal conversions
Pound/sq inch to Gigapascal Conversion Table
| Pound/sq inch (psi) | Gigapascal (GPa) |
|---|---|
| 0.5 | 3.447379e-6 |
| 1 | 6.894757e-6 |
| 2 | 1.378951e-5 |
| 5 | 3.447379e-5 |
| 10 | 6.894757e-5 |
| 15 | 0.000103 |
| 20 | 0.000138 |
| 25 | 0.000172 |
| 50 | 0.000345 |
| 100 | 0.000689 |
| 250 | 0.001724 |
| 500 | 0.003447 |
| 1000 | 0.006895 |
Gigapascal to Pound/sq inch Conversion Table
| Gigapascal (GPa) | Pound/sq inch (psi) |
|---|---|
| 0.5 | 72,518.868865 |
| 1 | 145,037.73773 |
| 2 | 290,075.47546 |
| 5 | 725,188.688651 |
| 10 | 1,450,377.377302 |
| 15 | 2,175,566.065953 |
| 20 | 2,900,754.754604 |
| 25 | 3,625,943.443255 |
| 50 | 7,251,886.886511 |
| 100 | 14,503,773.773022 |
| 250 | 36,259,434.432554 |
| 500 | 72,518,868.865108 |
| 1000 | 145,037,737.730217 |
Where these values come from
Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.
Pound/sq inch (psi)
Pressure
1 psi = 1 lbf/in² = 6894.757 293 168 361 Pa exactly.
Source: NIST Special Publication 811, Guide for the Use of the International System of Units
National Institute of Standards and Technology (US) · Reviewed 2026-07-01
Gigapascal (GPa)
Pressure
Derived from the pascal (1 Pa = 1 N/m²). The standard atmosphere is exactly 101 325 Pa.
Source: NIST Special Publication 811, Guide for the Use of the International System of Units
National Institute of Standards and Technology (US) · Reviewed 2026-07-01
How to Convert Pound/sq inch to Gigapascal
To convert from Pound/sq inch (psi) to Gigapascal (GPa), multiply the value by 6.894757e-6.
Formula: GPa = psi × 0.0000068948
Reverse: psi = GPa × 145,037.7377302168
Step-by-Step Example
- Start with your value in Pound/sq inch. For example: 5 psi
- Multiply by the conversion factor: 5 x 6.894757e-6
- The result is: 3.447379e-5 GPa
Pound/sq inch and Gigapascal Relationship
This conversion bridges the US Customary / Imperial and Metric (SI) measurement systems, commonly required when translating scientific data, international engineering specifications, or trade standards. Since 1 Pound/sq inch represents a fraction of a Gigapascal (1 Gigapascal ≈ 1.450e+5 Pound/sq inches), the Gigapascal is the larger measurement interval. Understanding the relationship between Pound/sq inch and Gigapascal is essential for accurate calculations in physics, engineering, commerce, and daily applications.
About Pound/sq inch
Pounds per square inch (psi) is an imperial unit of pressure widely used in the US for tire pressure, hydraulics, and engineering.
Common uses of Pound/sq inch: tire pressure (US), hydraulics, HVAC.
About Gigapascal
The Gigapascal (symbol: GPa) is a recognized unit in the Metric (SI) measurement framework, utilized within pressure applications for precision and standardized data representation.
Common uses of Gigapascal: pressure calculations, engineering and science, education.
Frequently Asked Questions
- What is 20 Pound/sq inch in Gigapascal?
- 20 Pound/sq inch equals 0.000138 Gigapascal.
- How many Gigapascals are in 1 Pound/sq inch?
- There are exactly 6.894757e-6 Gigapascals in 1 Pound/sq inch. This means the conversion factor from Pound/sq inch to Gigapascal is 6.894757e-6.
- What is the formula to convert Pound/sq inch to Gigapascal?
- The formula to convert Pound/sq inch to Gigapascal is: GPa = psi × 0.0000068948. For example, to convert 10 Pound/sq inches to Gigapascals, you would multiply 10 by 6.894757e-6.
- What is a Pound/sq inch?
- Pounds per square inch (psi) is an imperial unit of pressure widely used in the US for tire pressure, hydraulics, and engineering.
- What is a Gigapascal?
- The Gigapascal (symbol: GPa) is a recognized unit in the Metric (SI) measurement framework, utilized within pressure applications for precision and standardized data representation.
- What are the common uses of Pound/sq inch?
- The Pound/sq inch is commonly used in tire pressure (US), hydraulics, HVAC.
Related Pressure Conversions
Cite this page
UnitConvertLab. (2026). 20 Pound/sq inch to Gigapascal. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/20-psi-to-gigapascal