MPa to PSI Calculator – Convert Megapascals to PSI Instantly | OmniCalculator.Space

  • Adam
  • November 27, 2025

Free MPa to PSI calculator from OmniCalculator.Space. Instantly convert megapascals to pounds per square inch (PSI) for hydraulic systems, material testing, and engineering. Accurate bidirectional conversion with formula PSI = MPa × 145.038.

MPa to PSI Calculator - Convert Megapascals to Pounds Per Square Inch | OmniCalculator.Space

The MPa to PSI calculator from OmniCalculator.Space instantly converts megapascals (MPa) to pounds per square inch (PSI) and vice versa. Essential for hydraulic systems, material testing, and high-pressure applications, this free pressure converter provides accurate bidirectional conversion using the formula PSI = MPa × 145.038.

MPa to PSI Converter

Enter a value to convert

Quick Conversions

1 MPa
= 145.04 PSI
5 MPa
= 725.19 PSI
10 MPa
= 1450.38 PSI
20 MPa
= 2900.76 PSI

MPa to PSI Conversion Formula

Converting between megapascals and pounds per square inch requires understanding the precise conversion factor. The OmniCalculator.Space converter uses exact ratios for high-pressure calculations in hydraulics, material science, and engineering applications.

MPa to PSI Formula

PSI = MPa × 145.038

Multiply megapascals by 145.038 to get PSI

PSI to MPa Formula

MPa = PSI / 145.038

or equivalently

MPa = PSI × 0.00689476

Divide PSI by 145.038 or multiply by 0.00689476 to get megapascals

Conversion Factor Explanation

Understanding the MPa to PSI conversion:

  • 1 MPa = 1,000,000 pascals = 1,000,000 N/m²
  • 1 PSI = 6,894.76 pascals = 0.00689476 MPa
  • Conversion ratio: 1 MPa = 145.038 PSI (exactly 1,000,000 ÷ 6,894.76)
  • Inverse ratio: 1 PSI = 0.00689476 MPa
  • Memory aid: 10 MPa ≈ 1,450 PSI (approximately 145× the MPa value)

MPa to PSI Conversion Table

Comprehensive reference table for MPa to PSI conversions commonly used in hydraulics, material testing, and high-pressure systems with the OmniCalculator.Space calculator:

Megapascals (MPa) PSI (Pounds per Square Inch) Common Application
0.1 MPa 14.50 PSI Low pressure pneumatics
1 MPa 145.04 PSI Water supply systems
5 MPa 725.19 PSI Pressure washers
10 MPa 1,450.38 PSI Light hydraulic systems
15 MPa 2,175.57 PSI Mobile hydraulics
20 MPa 2,900.76 PSI Standard hydraulics
25 MPa 3,625.95 PSI Heavy-duty hydraulics
30 MPa 4,351.14 PSI Industrial presses
50 MPa 7,251.90 PSI High-pressure testing
100 MPa 14,503.80 PSI Material strength testing

How to Convert MPa to PSI

Converting megapascals to PSI is essential for hydraulic system design and material specifications. Follow these steps with the OmniCalculator.Space calculator:

  1. Identify your MPa value: Determine the pressure in megapascals from specifications, gauges, or engineering documents.
  2. Multiply by 145.038: Use the exact conversion factor PSI = MPa × 145.038 for precision.
  3. Round appropriately: For hydraulic systems, round to 0.1-1 PSI; for material specs, use 2-3 decimal places.
  4. Verify magnitude: Check that results make sense (10 MPa should give approximately 1,450 PSI).
  5. Use the calculator: Enter values into the OmniCalculator.Space MPa to PSI converter for instant bidirectional conversion.

Conversion Example 1: Hydraulic System

Problem: A hydraulic system operates at 20 MPa. Convert to PSI.

Solution:

Using formula: PSI = MPa × 145.038

PSI = 20 × 145.038

PSI = 2,900.76

Result: 2,901 PSI

This is a typical operating pressure for mobile and industrial hydraulic equipment.

Conversion Example 2: Material Testing

Problem: Steel yield strength is 250 MPa. Express in PSI.

Solution:

Using formula: PSI = MPa × 145.038

PSI = 250 × 145.038

PSI = 36,259.5

Result: 36,260 PSI

Material strength specifications often require precise conversion for international standards.

Conversion Example 3: PSI to MPa

Problem: Convert 3,000 PSI to MPa (hydraulic pump rating).

Solution:

Using formula: MPa = PSI / 145.038

MPa = 3,000 / 145.038

MPa = 20.684

Result: 20.68 MPa

Hydraulic pumps rated at 3,000 PSI are equivalent to approximately 20.7 MPa.

MPa vs PSI: Understanding the Units

Both megapascals and pounds per square inch measure pressure, with different applications and regional preferences:

Characteristic MPa (Megapascal) PSI (Pounds per Square Inch)
System SI (Metric) Imperial (US Customary)
Definition 1,000,000 pascals (N/m²) Force per square inch (lbf/in²)
Magnitude Large unit (1 MPa = 145 PSI) Smaller unit
Common Use International standards, scientific United States, some industrial
Hydraulic Systems 10-35 MPa typical 1,500-5,000 PSI typical
Material Strength 200-1,000 MPa (metals) 29,000-145,000 PSI

Applications of MPa to PSI Conversion

The OmniCalculator.Space MPa to PSI converter is essential for numerous high-pressure applications:

  • Hydraulic Systems: Converting pump, valve, and cylinder pressure ratings between international standards
  • Material Science: Translating tensile strength, yield strength, and elastic modulus specifications
  • Engineering Design: Converting pressure vessel, pipe, and structural ratings for multinational projects
  • Quality Control: Comparing test results from different regions using different pressure units
  • Safety Standards: Ensuring compliance with both metric and imperial safety pressure limits
  • Pressure Washers: Converting equipment specifications (typically 5-40 MPa or 700-6,000 PSI)
  • Water Jet Cutting: High-pressure systems operating at 200-400 MPa (30,000-60,000 PSI)
  • Pneumatic Systems: Converting compressor and air tool pressure specifications
  • Geotechnical Engineering: Soil and rock strength measurements in different unit systems

Common MPa to PSI Conversions

Hydraulic System Conversions

Light Duty Hydraulics:

  • 7 MPa = 1,015 PSI (minimum operating pressure)
  • 10 MPa = 1,450 PSI (light hydraulic tools)
  • 14 MPa = 2,031 PSI (standard mobile hydraulics)

Heavy Duty Hydraulics:

  • 20 MPa = 2,901 PSI (standard industrial)
  • 25 MPa = 3,626 PSI (heavy equipment)
  • 35 MPa = 5,076 PSI (maximum rated pressure)

Material Strength Conversions

Common Material Strengths:

  • 200 MPa = 29,008 PSI (mild steel yield strength)
  • 400 MPa = 58,015 PSI (high-strength steel)
  • 500 MPa = 72,519 PSI (structural steel)
  • 1,000 MPa = 145,038 PSI (ultra-high-strength steel)

Concrete Strengths:

  • 20 MPa = 2,901 PSI (standard concrete)
  • 30 MPa = 4,351 PSI (high-strength concrete)
  • 50 MPa = 7,252 PSI (ultra-high-performance concrete)

Tips for Accurate MPa to PSI Conversion

Best Practices for High-Pressure Conversions:

  • Use exact factor: Always use 145.038 (not 145 or 150) for precision in critical applications
  • Understand gauge vs absolute: Hydraulic pressures are typically gauge pressure (above atmospheric)
  • Check safety margins: Never exceed equipment ratings after conversion
  • Remember the magnitude: MPa is a large unit—1 MPa is substantial pressure (145 PSI)
  • Use OmniCalculator.Space: For safety-critical applications, always verify with our calculator
  • Document conversions: Record both MPa and PSI values in engineering documentation
  • Consider temperature: Hydraulic fluid properties change with temperature, affecting pressure
  • Verify equipment compatibility: Ensure all components can handle converted pressure values

Frequently Asked Questions

How do you convert MPa to PSI?
To convert MPa to PSI, multiply the megapascal value by 145.038. The formula is: PSI = MPa × 145.038. For example, to convert 10 MPa to PSI: 10 × 145.038 = 1,450.38 PSI. The OmniCalculator.Space MPa to PSI calculator performs this conversion instantly with full precision. For quick estimates, remember that 1 MPa equals approximately 145 PSI, so 10 MPa ≈ 1,450 PSI and 20 MPa ≈ 2,900 PSI.
What is the formula for converting MPa to PSI?
The conversion formula is PSI = MPa × 145.038, where 145.038 is the exact conversion factor. This factor derives from the fact that 1 megapascal equals 145.038 pounds per square inch. For the reverse conversion from PSI to MPa, use: MPa = PSI / 145.038 or MPa = PSI × 0.00689476. These formulas are inverses of each other, ensuring bidirectional accuracy in the OmniCalculator.Space converter for hydraulic systems and material specifications.
How many PSI is 20 MPa?
20 MPa equals 2,900.76 PSI, typically rounded to 2,901 PSI. To calculate: 20 × 145.038 = 2,900.76 PSI. This is a very common hydraulic system operating pressure, used in mobile equipment, industrial machinery, and construction equipment. Many hydraulic pumps, cylinders, and valves are rated for 20 MPa (approximately 3,000 PSI), representing a standard pressure for medium to heavy-duty hydraulic applications. The OmniCalculator.Space calculator confirms this conversion precisely.
Is 10 MPa equal to 1450 PSI?
Yes, 10 MPa equals 1,450.38 PSI, which rounds to 1,450 PSI. The exact calculation is: 10 × 145.038 = 1,450.38 PSI. This pressure level is common for light to medium hydraulic systems, pressure washers, and various industrial applications. The 10 MPa = 1,450 PSI conversion is a useful reference point for estimating other conversions. For instance, knowing this relationship helps you quickly determine that 5 MPa ≈ 725 PSI (half) or 20 MPa ≈ 2,900 PSI (double).
How many MPa is 3000 PSI?
3,000 PSI equals 20.68 MPa. To calculate: 3,000 / 145.038 = 20.684 MPa, or using the alternative formula: 3,000 × 0.00689476 = 20.684 MPa. This is a standard rating for many hydraulic pumps and systems. Equipment rated at 3,000 PSI can handle approximately 20.7 MPa maximum pressure. This conversion is particularly important when selecting hydraulic components from different manufacturers who may specify ratings in either PSI or MPa. Use the OmniCalculator.Space calculator for exact conversions.
How do you convert PSI to MPa?
To convert PSI to MPa, divide the PSI value by 145.038, or multiply by 0.00689476. The formula is: MPa = PSI / 145.038 or MPa = PSI × 0.00689476. For example, to convert 5,000 PSI to MPa: 5,000 / 145.038 = 34.47 MPa. This reverse conversion is essential when working with American equipment specifications that need to be compared with international metric standards. The OmniCalculator.Space converter handles both directions automatically with equal precision.
Why is MPa used instead of PSI?
MPa is used internationally as part of the SI (metric) system, which is the global standard for scientific and engineering work. Most countries outside the United States use MPa for pressure specifications in hydraulics, material testing, and engineering. MPa is more convenient for high-pressure applications because it avoids large numbers—20 MPa is easier to work with than 2,900 PSI. Additionally, MPa integrates seamlessly with other SI units (Newtons, meters, kilograms), simplifying calculations. The OmniCalculator.Space converter bridges both systems for international compatibility.
What is considered high pressure in MPa?
High pressure depends on the application, but generally: 10-20 MPa (1,450-2,900 PSI) is standard hydraulics; 20-35 MPa (2,900-5,075 PSI) is heavy-duty hydraulics; above 35 MPa (5,000 PSI) is considered high pressure; and 100+ MPa (14,500+ PSI) is ultra-high pressure for material testing and specialized applications like waterjet cutting. Pressure vessel codes define high pressure differently—typically anything requiring special design considerations above 10-15 MPa. Always consult relevant standards and safety codes for your specific application.
How many MPa is a typical hydraulic system?
Typical hydraulic systems operate at 10-25 MPa (1,450-3,625 PSI). Mobile hydraulics (construction equipment, agricultural machinery) commonly run at 14-21 MPa (2,000-3,000 PSI). Industrial hydraulics range from 10-35 MPa (1,450-5,075 PSI) depending on application. Light-duty systems may operate at 7-10 MPa (1,000-1,450 PSI). Maximum rated pressures often include a safety margin above operating pressure. The OmniCalculator.Space calculator helps verify that all system components are rated for the operating pressure in either MPa or PSI.
Is MPa bigger than PSI?
Yes, MPa is a much larger unit than PSI. One megapascal (1 MPa) equals 145.038 PSI, meaning MPa is about 145 times larger than PSI. This means that numerically, MPa values are much smaller than equivalent PSI values for the same pressure. For example, a hydraulic system operating at 20 MPa is equivalent to 2,901 PSI—the PSI number is about 145 times larger. The large size of MPa makes it convenient for high-pressure applications where PSI numbers would be in the thousands. The OmniCalculator.Space converter handles this size difference automatically.

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