Convert between pascal (Pa) and megapascal (MPa) for pressure measurements — 1 MPa = 1,000,000 Pa exactly.
Select conversion direction:
SI Pressure Unit Conversion (Metric Prefix):
1 Megapascal (MPa) = 1,000,000 Pascals (Pa) | 1 Pascal (Pa) = 1×10⁻⁶ Megapascal (MPa)
MPa = Pa × 1e-6 | Pa = MPa × 1e6 (Results shown with 4 decimal places)
*SI unit definition: 1 Pa = 1 N/m²; "Mega-" prefix = 10⁶ (one million)
Pascal (SI base unit) — used for low/medium pressure: atmospheric, HVAC, laboratory
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Quick conversions (common pressures) - click to auto-fill:
Useful for engineering pressure calculations? Share with engineers, mechanics, or anyone working with fluid systems:
Understanding SI pressure units for engineering, science, and industrial applications.
| Unit | Symbol | Factor (vs Pascal) | Common Uses |
|---|---|---|---|
| Pascal | Pa | 1 (base unit) | Atmospheric pressure, HVAC systems, laboratory measurements, low-pressure gases |
| Megapascal | MPa | 10⁶ Pa (1,000,000 Pa) | High-pressure systems: hydraulic machinery, automotive engines, construction materials (concrete strength), industrial equipment |
| Pascal (Pa) | ≈ | Megapascal (MPa) | Real-World Application |
|---|---|---|---|
| 10,000 Pa | ≈ | 0.0100 MPa | Low-pressure pneumatic systems |
| 101,325 Pa | ≈ | 0.1013 MPa | Sea-level standard atmospheric pressure |
| 200,000 Pa | ≈ | 0.2000 MPa | Passenger car tire pressure (typical) |
| 5,000,000 Pa | ≈ | 5.0000 MPa | Industrial hydraulic system pressure |
| 20,000,000 Pa | ≈ | 20.0000 MPa | Concrete compressive strength (high-performance) |
About pascal, megapascal, and SI pressure conversions
The relationship comes from SI metric prefix rules for unit scaling:
1 MPa = 10⁶ Pa = 1,000 kPa = 10 bar
1 Pa = 10⁻⁶ MPa = 0.001 kPa = 0.00001 bar
Conversion rule: Multiply by 1e-6 for Pa→MPa; multiply by 1e6 for MPa→Pa
The choice depends on the pressure magnitude and industry conventions:
A practical rule: Use pascals for pressures below 1,000,000 Pa (1 MPa) to avoid decimal MPa values (e.g., "200,000 Pa" is clearer than "0.2 MPa"); use MPa for pressures above 1 MPa to avoid large Pa numbers (e.g., "10 MPa" is clearer than "10,000,000 Pa").
All pressure units connect through the pascal (SI base unit):
1 MPa = 10 bar = 145.038 psi = 9.869 atm = 1,000,000 Pa
1 bar = 0.1 MPa = 14.5038 psi = 0.9869 atm = 100,000 Pa
1 psi = 0.006895 MPa = 0.06895 bar = 0.0680 atm = 6894.76 Pa
1 atm = 0.1013 MPa = 1.013 bar = 14.6959 psi = 101,325 Pa
Practical cross-unit examples:
This converter’s fixed 1e6 Pa/MPa factor ensures seamless integration with other pressure unit conversions — simply convert to Pa/MPa first, then to bar/psi using the factors above.
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