Gigapascal to Pascal Converter

Convert between gigapascals (GPa) and pascals (Pa) for material science, engineering, and pressure measurement applications.

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Gigapascals to Pascals Conversion (Metric System):

1 Gigapascal (GPa) = 1,000,000,000 Pascals (Pa)

Pa = GPa × 1,000,000,000 | GPa = Pa ÷ 1,000,000,000 (e.g., 2.5 GPa = 2,500,000,000 Pa; 5,000,000,000 Pa = 5 GPa)

GPa

Accepts decimals (e.g., 0.001 GPa = 1,000,000 Pa)

Pa

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Quick conversions (material properties) - click to auto-fill:

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About Gigapascals (GPa) and Pascals (Pa)

Key differences between gigapascals (large pressure unit) and pascals (base metric unit) — critical for material science and engineering applications.

GPa vs Pa Comparison

Unit Definition 1 Unit = Common Uses
Gigapascal (GPa) 1 billion pascals — metric unit for high pressure/stress measurements 1,000,000,000 Pa
1000 megapascals (MPa)
Material strength, Young's modulus, rock mechanics, aerospace engineering
Pascal (Pa) Base metric unit of pressure: 1 N/m² (force per unit area) 0.000000001 GPa
0.000001 megapascals (MPa)
Atmospheric pressure, fluid dynamics, low-pressure systems, meteorology

*Note: The "giga-" prefix denotes 10⁹ (one billion) in the International System of Units (SI).

Gigapascal (GPa)

  • Defined as 1 billion pascals (1 GPa = 10⁹ Pa) — ideal for measuring high-strength materials.
  • Practical reference: 1 GPa approximates the pressure at a depth of 10,000 meters in the ocean.
  • Used to quantify material properties like tensile strength and hardness (e.g., steel has a modulus of ~200 GPa).
  • Critical in aerospace engineering, civil construction, and advanced material research.

Pascal (Pa)

  • SI base unit of pressure: 1 Pa equals 1 newton of force applied over 1 square meter (N/m²).
  • Everyday reference: Atmospheric pressure at sea level is approximately 101,325 Pa (~0.1 MPa).
  • Used in fluid dynamics, meteorology (air pressure reporting), and low-pressure engineering systems.
  • Too small for material strength measurements (e.g., steel strength ≈ 250,000,000,000 Pa = 250 GPa).

Common Pressure Values (GPa → Pa → Real-World Examples)

Gigapascals (GPa) Pascals (Pa) Equivalent Real-World Example
0.000001 GPa 1,000 Pa 0.001 MPa Pressure from a heavy textbook on a table
0.001 GPa 1,000,000 Pa 1 MPa Compressive strength of typical concrete
2.5 GPa 2,500,000,000 Pa 2500 MPa Strength of borosilicate glass
200 GPa 200,000,000,000 Pa 200,000 MPa Young's modulus of structural steel
400 GPa 400,000,000,000 Pa 400,000 MPa Hardness of natural diamond

Gigapascal to Pascal Conversion Table

Common conversions for material science and engineering applications (1 GPa = 1,000,000,000 Pa)

GPa → Pa

Gigapascals (GPa) = Pascals (Pa)
0.0001 GPa = 100,000 Pa
0.001 GPa = 1,000,000 Pa
0.01 GPa = 10,000,000 Pa
0.1 GPa = 100,000,000 Pa
1 GPa = 1,000,000,000 Pa
100 GPa = 100,000,000,000 Pa

Pa → GPa

Pascals (Pa) = Gigapascals (GPa)
100,000 Pa = 0.0001 GPa
1,000,000 Pa = 0.001 GPa
10,000,000 Pa = 0.01 GPa
100,000,000 Pa = 0.1 GPa
1,000,000,000 Pa = 1 GPa
100,000,000,000 Pa = 100 GPa

Frequently Asked Questions

Common questions about gigapascal to pascal conversions and pressure units

Why is 1 GPa equal to exactly 1,000,000,000 Pa?

The metric system uses decimal prefixes to denote multiples of base units:

  • "Giga-" (symbol: G) means one billion (10⁹) in the International System of Units (SI).
  • Thus, 1 gigapascal = 10⁹ pascals = 1,000,000,000 pascals.
  • This follows the same logic as other metric units (e.g., 1 gigagram = 10⁹ grams).
When would engineers use GPa instead of Pa?

GPa is preferred for high-pressure applications where pascals would result in unwieldy numbers:

  • Material Science: Measuring tensile strength (e.g., aluminum: 0.27 GPa) or Young's modulus (stiffness).
  • Civil Engineering: Specifying concrete compressive strength (typically 0.02–0.04 GPa).
  • Aerospace: Designing with high-strength alloys (titanium: ~1.2 GPa ultimate strength).
  • Geology: Describing rock formation pressures deep underground.

Using GPa avoids writing 9+ zeros (e.g., 200 GPa is clearer than 200,000,000,000 Pa).

How do GPa and Pa relate to other pressure units like MPa or psi?

Key conversions for common pressure units:

1 GPa = 1000 MPa = 1,000,000,000 Pa = 145,037.738 psi

1 MPa = 0.001 GPa = 1,000,000 Pa = 145.038 psi

1 psi ≈ 6,894.76 Pa ≈ 0.000006895 GPa

Examples for multi-step conversions:

  • 50 MPa = 50 × 0.001 GPa = 0.05 GPa = 50,000,000 Pa
  • 30,000 psi ≈ 30,000 × 0.000006895 GPa ≈ 0.2068 GPa

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