Convert Kilopounds per Square Inch to Megapascals
Instantly convert Kilopounds per Square Inch (ksi) to Megapascals (MPa) with our free online calculator.
Formula: ksi to MPa — multiply by 6.89476
Reference Table
| Kilopounds per Square Inch (ksi) | Megapascals (MPa) |
|---|---|
| 1 | 6.89476 |
| 5 | 34.4738 |
| 10 | 68.9476 |
| 25 | 172.369 |
| 50 | 344.738 |
| 100 | 689.476 |
How to Convert Kilopounds per Square Inch to Megapascals
Formula
To convert Kilopounds per Square Inch (ksi) to Megapascals (MPa): multiply by 6.89476
Step-by-Step
- Start with your value in Kilopounds per Square Inch (ksi).
- Multiply by 6.89476 to perform the conversion.
- The result is your value expressed in Megapascals (MPa).
Conversion Factor
1 ksi = 6.89476 MPa
Reverse Factor
1 MPa = 0.145038 ksi
Worked Example
Convert 25 Kilopounds per Square Inch to Megapascals: 25 ksi = 172.369 MPa
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 Megapascal (MPa)
A metric unit of pressure equal to exactly 1,000,000 pascals (1,000 kPa), or 10 bar. Megapascals are the universal SI unit for material strength reporting in structural and mechanical engineering: concrete compressive strength (typically 20-60 MPa per ACI 318 / Eurocode 2, with ultra-high-performance concrete reaching 150-200 MPa), structural-steel yield stress (250 MPa for S275 / A36, 355 MPa for S355, up to 690 MPa for HSLA grades), aluminum tensile (6061-T6 ~310 MPa), and the fracture toughness of ceramics and polymers reported as MPa·m^½ in materials databases. Mechanical-engineering finite-element solvers (Abaqus, ANSYS, Nastran), pressure-vessel codes (ASME BPVC Section VIII, PD 5500, EN 13445), hydraulic system specifications above ~70 bar, and the civil-engineering concrete mix specs all use MPa as the working pressure/stress unit. Common conversions: 1 MPa = 10 bar = 145.04 psi = 9.869 atm.
Quick Facts
- 1 Kilopound per Square Inch equals 6.89476 Megapascals
- 1 Megapascal equals 0.145038 Kilopounds per Square Inch
- Kilopound per Square Inch is a unit of pressure
- Megapascal 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 Megapascal belongs to the metric system
Common Kilopound per Square Inch to Megapascal Conversions
| Kilopounds per Square Inch (ksi) | Megapascals (MPa) |
|---|---|
| 0.1 | 0.689476 |
| 0.5 | 3.44738 |
| 1 | 6.89476 |
| 2 | 13.7895 |
| 5 | 34.4738 |
| 10 | 68.9476 |
| 14.696 | 101.325 |
| 15 | 103.421 |
| 20 | 137.895 |
| 25 | 172.369 |
| 50 | 344.738 |
| 100 | 689.476 |
| 150 | 1034.21 |
| 200 | 1378.95 |
| 500 | 3447.38 |
| 1000 | 6894.76 |
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 Megapascals
The Megapascal (symbol: MPa) is a unit of pressure. A metric unit of pressure equal to exactly 1,000,000 pascals (1,000 kPa), or 10 bar. Megapascals are the universal SI unit for material strength reporting in structural and mechanical engineering: concrete compressive strength (typically 20-60 MPa per ACI 318 / Eurocode 2, with ultra-high-performance concrete reaching 150-200 MPa), structural-steel yield stress (250 MPa for S275 / A36, 355 MPa for S355, up to 690 MPa for HSLA grades), aluminum tensile (6061-T6 ~310 MPa), and the fracture toughness of ceramics and polymers reported as MPa·m^½ in materials databases. Mechanical-engineering finite-element solvers (Abaqus, ANSYS, Nastran), pressure-vessel codes (ASME BPVC Section VIII, PD 5500, EN 13445), hydraulic system specifications above ~70 bar, and the civil-engineering concrete mix specs all use MPa as the working pressure/stress unit. Common conversions: 1 MPa = 10 bar = 145.04 psi = 9.869 atm.
It belongs to the metric measurement system.
Megapascals are commonly used in tire inflation, weather reporting, scuba diving, and engineering.
Why Convert Kilopounds per Square Inch to Megapascals?
Engineers, mechanics, and scientists frequently need to convert pressure between Kilopounds per Square Inch and Megapascals 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 Megapascals?
An imperial unit of pressure equal to exactly 1,000 psi (≈ 6. To convert Kilopounds per Square Inch to Megapascals, multiply by 6.89476. For example, 25 ksi equals 172.369 MPa.
How many Megapascals are in 1 Kilopound per Square Inch?
There are 6.89476 Megapascals in 1 Kilopound per Square Inch.
How many Kilopounds per Square Inch are in 1 Megapascal?
There are 0.145038 Kilopounds per Square Inch in 1 Megapascal.
What is the formula for Kilopound per Square Inch to Megapascal conversion?
The formula is: multiply by 6.89476. This means 1 ksi = 6.89476 MPa.
Is a Kilopound per Square Inch bigger than a Megapascal?
No. One Kilopound per Square Inch is smaller than one Megapascal because 1 ksi equals 6.89476 MPa, which is greater than 1.
When do you need to convert between Kilopounds per Square Inch and Megapascals?
A metric unit of pressure equal to exactly 1,000,000 pascals (1,000 kPa), or 10 bar. Kilopound per Square Inch and Megapascal 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.