Convert Kilopounds per Square Inch to Gigapascals
Instantly convert Kilopounds per Square Inch (ksi) to Gigapascals (GPa) with our free online calculator.
Formula: ksi to GPa — multiply by 0.00689476
Reference Table
| Kilopounds per Square Inch (ksi) | Gigapascals (GPa) |
|---|---|
| 1 | 0.00689476 |
| 5 | 0.0344738 |
| 10 | 0.0689476 |
| 25 | 0.172369 |
| 50 | 0.344738 |
| 100 | 0.689476 |
How to Convert Kilopounds per Square Inch to Gigapascals
Formula
To convert Kilopounds per Square Inch (ksi) to Gigapascals (GPa): multiply by 0.00689476
Step-by-Step
- Start with your value in Kilopounds per Square Inch (ksi).
- Multiply by 0.00689476 to perform the conversion.
- The result is your value expressed in Gigapascals (GPa).
Conversion Factor
1 ksi = 0.00689476 GPa
Reverse Factor
1 GPa = 145.038 ksi
Worked Example
Convert 25 Kilopounds per Square Inch to Gigapascals: 25 ksi = 0.172369 GPa
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.
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.
Quick Facts
- 1 Kilopound per Square Inch equals 0.00689476 Gigapascals
- 1 Gigapascal equals 145.038 Kilopounds per Square Inch
- Kilopound per Square Inch is a unit of pressure
- Gigapascal is a unit of pressure
- This conversion is commonly used in tire inflation, weather reporting, scuba diving, and engineering
- The Kilopound per Square Inch belongs to the imperial system
- The Gigapascal belongs to the metric system
Common Kilopound per Square Inch to Gigapascal Conversions
| Kilopounds per Square Inch (ksi) | Gigapascals (GPa) |
|---|---|
| 0.1 | 0.000689476 |
| 0.5 | 0.00344738 |
| 1 | 0.00689476 |
| 2 | 0.0137895 |
| 5 | 0.0344738 |
| 10 | 0.0689476 |
| 14.696 | 0.101325 |
| 15 | 0.103421 |
| 20 | 0.137895 |
| 25 | 0.172369 |
| 50 | 0.344738 |
| 100 | 0.689476 |
| 150 | 1.03421 |
| 200 | 1.37895 |
| 500 | 3.44738 |
| 1000 | 6.89476 |
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.
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.
Why Convert Kilopounds per Square Inch to Gigapascals?
Engineers, mechanics, and scientists frequently need to convert pressure between Kilopounds per Square Inch and Gigapascals 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 Kilopounds per Square Inch to Gigapascals?
An imperial unit of pressure equal to exactly 1,000 psi (≈ 6. To convert Kilopounds per Square Inch to Gigapascals, multiply by 0.00689476. For example, 25 ksi equals 0.172369 GPa.
How many Gigapascals are in 1 Kilopound per Square Inch?
There are 0.00689476 Gigapascals in 1 Kilopound per Square Inch.
How many Kilopounds per Square Inch are in 1 Gigapascal?
There are 145.038 Kilopounds per Square Inch in 1 Gigapascal.
What is the formula for Kilopound per Square Inch to Gigapascal conversion?
The formula is: multiply by 0.00689476. This means 1 ksi = 0.00689476 GPa.
Is a Kilopound per Square Inch bigger than a Gigapascal?
Yes. One Kilopound per Square Inch is larger than one Gigapascal because 1 ksi equals 0.00689476 GPa, which is less than 1.
When do you need to convert between Kilopounds per Square Inch and Gigapascals?
A metric unit of pressure equal to exactly 1,000,000,000 pascals (1,000 MPa). Kilopound per Square Inch and Gigapascal 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.