Convert Gigapascals to Kilopounds per Square Inch
Instantly convert Gigapascals (GPa) to Kilopounds per Square Inch (ksi) with our free online calculator.
Formula: GPa to ksi — multiply by 145.038
Reference Table
| Gigapascals (GPa) | Kilopounds per Square Inch (ksi) |
|---|---|
| 1 | 145.038 |
| 5 | 725.188 |
| 10 | 1450.38 |
| 25 | 3625.94 |
| 50 | 7251.88 |
| 100 | 14503.8 |
How to Convert Gigapascals to Kilopounds per Square Inch
Formula
To convert Gigapascals (GPa) to Kilopounds per Square Inch (ksi): multiply by 145.038
Step-by-Step
- Start with your value in Gigapascals (GPa).
- Multiply by 145.038 to perform the conversion.
- The result is your value expressed in Kilopounds per Square Inch (ksi).
Conversion Factor
1 GPa = 145.038 ksi
Reverse Factor
1 ksi = 0.00689476 GPa
Worked Example
Convert 25 Gigapascals to Kilopounds per Square Inch: 25 GPa = 3625.94 ksi
About Gigapascal (GPa)
A metric unit of pressure equal to exactly 1,000,000,000 pascals (1,000 MPa). Gigapascals are the standard unit for reporting elastic-modulus and material-stiffness properties — Young's modulus of structural steel is ~200-210 GPa, aluminum alloys ~69-72 GPa, titanium ~110 GPa, concrete ~25-35 GPa, single-crystal diamond ~1,050-1,200 GPa, and CFRP composite ~150-230 GPa (longitudinal). MatWeb, NIST's MMP database, and the ASM Handbook tabulate elastic constants in GPa. GPa is also the working unit for ultra-high-pressure scientific experiments: diamond-anvil cell measurements (currently extending past 1,000 GPa = 1 TPa for studies of metallic hydrogen and Earth-core conditions), shock-wave equation-of-state research at national labs (LANL, LLNL, Sandia), and geophysics interior models — Earth's outer core lies between roughly 135 and 330 GPa. 1 GPa = 10,000 bar = 145,038 psi.
About Kilopound per Square Inch (ksi)
An imperial unit of pressure equal to exactly 1,000 psi (≈ 6.895 MPa). KSI is the standard US unit for reporting material strength: structural-steel yield (A36 = 36 ksi, A992 W-shapes = 50 ksi, A572-Gr50 plate = 50 ksi, A514 quenched-tempered = 100 ksi), bolt-grade tensile strength (SAE Grade 5 = 120 ksi, Grade 8 = 150 ksi, ASTM A325 = 105-120 ksi, A490 = 150 ksi), aluminum aerospace alloys (7075-T6 ultimate = ~83 ksi), and the S-N fatigue curves in MMPDS / ASME Section VIII Division 3. US structural codes (AISC Steel Construction Manual, AASHTO LRFD Bridge Design), aerospace stress reports, and oil-and-gas casing specifications (API 5CT) all express allowables and yield in ksi. When cross-referencing US alloys against international material databases (typically MPa), the conversion ksi × 6.895 → MPa is essentially universal.
Quick Facts
- 1 Gigapascal equals 145.038 Kilopounds per Square Inch
- 1 Kilopound per Square Inch equals 0.00689476 Gigapascals
- Gigapascal is a unit of pressure
- Kilopound per Square Inch is a unit of pressure
- This conversion is commonly used in tire inflation, weather reporting, scuba diving, and engineering
- The Gigapascal belongs to the metric system
- The Kilopound per Square Inch belongs to the imperial system
Common Gigapascal to Kilopound per Square Inch Conversions
| Gigapascals (GPa) | Kilopounds per Square Inch (ksi) |
|---|---|
| 0.1 | 14.5038 |
| 0.5 | 72.5188 |
| 1 | 145.038 |
| 2 | 290.075 |
| 5 | 725.188 |
| 10 | 1450.38 |
| 14.696 | 2131.47 |
| 15 | 2175.57 |
| 20 | 2900.75 |
| 25 | 3625.94 |
| 50 | 7251.88 |
| 100 | 14503.8 |
| 150 | 21755.7 |
| 200 | 29007.5 |
| 500 | 72518.8 |
| 1000 | 145038 |
Understanding Gigapascals
The Gigapascal (symbol: GPa) is a unit of pressure. A metric unit of pressure equal to exactly 1,000,000,000 pascals (1,000 MPa). Gigapascals are the standard unit for reporting elastic-modulus and material-stiffness properties — Young's modulus of structural steel is ~200-210 GPa, aluminum alloys ~69-72 GPa, titanium ~110 GPa, concrete ~25-35 GPa, single-crystal diamond ~1,050-1,200 GPa, and CFRP composite ~150-230 GPa (longitudinal). MatWeb, NIST's MMP database, and the ASM Handbook tabulate elastic constants in GPa. GPa is also the working unit for ultra-high-pressure scientific experiments: diamond-anvil cell measurements (currently extending past 1,000 GPa = 1 TPa for studies of metallic hydrogen and Earth-core conditions), shock-wave equation-of-state research at national labs (LANL, LLNL, Sandia), and geophysics interior models — Earth's outer core lies between roughly 135 and 330 GPa. 1 GPa = 10,000 bar = 145,038 psi.
It belongs to the metric measurement system.
Gigapascals are commonly used in tire inflation, weather reporting, scuba diving, and engineering.
Understanding Kilopounds per Square Inch
The Kilopound per Square Inch (symbol: ksi) is a unit of pressure. An imperial unit of pressure equal to exactly 1,000 psi (≈ 6.895 MPa). KSI is the standard US unit for reporting material strength: structural-steel yield (A36 = 36 ksi, A992 W-shapes = 50 ksi, A572-Gr50 plate = 50 ksi, A514 quenched-tempered = 100 ksi), bolt-grade tensile strength (SAE Grade 5 = 120 ksi, Grade 8 = 150 ksi, ASTM A325 = 105-120 ksi, A490 = 150 ksi), aluminum aerospace alloys (7075-T6 ultimate = ~83 ksi), and the S-N fatigue curves in MMPDS / ASME Section VIII Division 3. US structural codes (AISC Steel Construction Manual, AASHTO LRFD Bridge Design), aerospace stress reports, and oil-and-gas casing specifications (API 5CT) all express allowables and yield in ksi. When cross-referencing US alloys against international material databases (typically MPa), the conversion ksi × 6.895 → MPa is essentially universal.
It belongs to the imperial measurement system.
Kilopounds per Square Inch are commonly used in tire inflation, weather reporting, scuba diving, and engineering.
Why Convert Gigapascals to Kilopounds per Square Inch?
Engineers, mechanics, and scientists frequently need to convert pressure between Gigapascals and Kilopounds per Square Inch when working with different measurement standards. Tire pressure, blood pressure readings, weather barometric measurements, and industrial process specifications may all use different pressure units depending on the region or discipline. Reliable conversion prevents equipment misuse and ensures safety.
Frequently Asked Questions
How do I convert Gigapascals to Kilopounds per Square Inch?
A metric unit of pressure equal to exactly 1,000,000,000 pascals (1,000 MPa). To convert Gigapascals to Kilopounds per Square Inch, multiply by 145.038. For example, 25 GPa equals 3625.94 ksi.
How many Kilopounds per Square Inch are in 1 Gigapascal?
There are 145.038 Kilopounds per Square Inch in 1 Gigapascal.
How many Gigapascals are in 1 Kilopound per Square Inch?
There are 0.00689476 Gigapascals in 1 Kilopound per Square Inch.
What is the formula for Gigapascal to Kilopound per Square Inch conversion?
The formula is: multiply by 145.038. This means 1 GPa = 145.038 ksi.
Is a Gigapascal bigger than a Kilopound per Square Inch?
No. One Gigapascal is smaller than one Kilopound per Square Inch because 1 GPa equals 145.038 ksi, which is greater than 1.
When do you need to convert between Gigapascals and Kilopounds per Square Inch?
An imperial unit of pressure equal to exactly 1,000 psi (≈ 6. Gigapascal and Kilopound per Square Inch are both pressure units, so conversion comes up whenever one source of information uses one unit and another uses the other — a classic cross-reference challenge in engineering, trade, travel, and everyday life.