Gigapascal to Megapascal Converter
Enter the value that you want to convert gigapascal (GPa) to megapascal (MPa) or megapascal to gigapascal.Also written as GPA to MPA conversion.
1 gigapascal = 1000.0000000 megapascal
Formula: megapascal = gigapascal value × 1000.0000000
GPA to MPA — gigapascal to megapascal
10 gigapascal = 10000.00000 megapascal
Popular Pressure Converters:
Why Convert Gigapascal to Megapascal?
About the Gigapascal
Gigapascal (GPa) is a unit of pressure measurement. 1 gigapascal is equal to 1000.0000000 megapascal.
What is Megapascal?
Megapascal (MPa) is a unit of pressure measurement. 1 megapascal is equal to 0.0010000 gigapascal.
Pressure Units Across Industries
Pressure measurements vary dramatically by industry. Meteorologists report in millibars or hectopascals, tire shops use PSI, scuba divers think in atmospheres or bar, vacuum engineers work in torr, and hydraulic systems specify in megapascals. A single industrial plant might encounter all these units across different equipment manuals, safety datasheets, and regulatory standards from different countries.
gigapascal to megapascal metric conversion table
| 0.01 GPa | = | 10.00000 MPa |
| 0.1 GPa | = | 100.00000 MPa |
| 1 GPa | = | 1000.00000 MPa |
| 2 GPa | = | 2000.00000 MPa |
| 3 GPa | = | 3000.00000 MPa |
| 4 GPa | = | 4000.00000 MPa |
| 5 GPa | = | 5000.00000 MPa |
| 6 GPa | = | 6000.00000 MPa |
| 7 GPa | = | 7000.00000 MPa |
| 8 GPa | = | 8000.00000 MPa |
| 9 GPa | = | 9000.00000 MPa |
| 10 GPa | = | 10000.00000 MPa |
| 11 GPa | = | 11000.00000 MPa |
| 12 GPa | = | 12000.00000 MPa |
| 13 GPa | = | 13000.00000 MPa |
| 14 GPa | = | 14000.00000 MPa |
| 15 GPa | = | 15000.00000 MPa |
| 16 GPa | = | 16000.00000 MPa |
| 17 GPa | = | 17000.00000 MPa |
| 18 GPa | = | 18000.00000 MPa |
| 19 GPa | = | 19000.00000 MPa |
| 20 GPa | = | 20000.00000 MPa |
| 30 GPa | = | 30000.00000 MPa |
| 40 GPa | = | 40000.00000 MPa |
| 50 GPa | = | 50000.00000 MPa |
| 60 GPa | = | 60000.00000 MPa |
| 70 GPa | = | 70000.00000 MPa |
| 80 GPa | = | 80000.00000 MPa |
| 90 GPa | = | 90000.00000 MPa |
| 100 GPa | = | 100000.00000 MPa |
| 200 GPa | = | 200000.00000 MPa |
| 300 GPa | = | 300000.00000 MPa |
| 400 GPa | = | 400000.00000 MPa |
| 500 GPa | = | 500000.00000 MPa |
| 600 GPa | = | 600000.00000 MPa |
| 700 GPa | = | 700000.00000 MPa |
| 800 GPa | = | 800000.00000 MPa |
| 900 GPa | = | 900000.00000 MPa |
| 1000 GPa | = | 1000000.00000 MPa |
How to Convert GPA to MPA (Gigapascal to Megapascal)?
We can convert gigapascal to megapascal by using an example.
Example:
Convert 20 Gigapascal to Megapascal?
We know 1 Gigapascal = 1000.0000000 megapascal; 1 Megapascal = 0.0010000 gigapascal.
20 gigapascal = ___MPa
20 × 1000.0000000 = 20000.00000 MPa (we know 1 gigapascal = 1000.0000000 megapascal)
Answer:
20 gigapascal = 20000.00000 megapascal
How to Convert GPa to MPa (Step-by-Step)
Converting gigapascals to megapascals is a simple SI prefix shift used constantly in materials science. Since "giga" is 10⁹ and "mega" is 10⁶, the ratio is exactly 1000: 1 GPa = 1000 MPa.
- Write down the value in gigapascals (GPa).
- Multiply the GPa value by 1000.
- The result is the equivalent value in megapascals (MPa).
- Verify: your MPa value should have exactly three more digits than the GPa value.
Common GPa to MPa Conversions
Material properties transitioning between the GPa (modulus) and MPa (strength) scales.
| Gigapascal | Megapascal |
|---|---|
| 0.02 GPa | 20 MPa |
| 0.04 GPa | 40 MPa |
| 0.25 GPa | 250 MPa |
| 0.5 GPa | 500 MPa |
| 1 GPa | 1,000 MPa |
| 69 GPa | 69,000 MPa |
| 200 GPa | 200,000 MPa |
| 1220 GPa | 1,220,000 MPa |
Solved Examples: GPa to MPa
Question 1: A materials datasheet lists tensile strength as 1.8 GPa for a spring steel wire. Express in MPa.
Solution:
Strength in MPa = Strength in GPa × 1000
= 1.8 × 1000
= 1800 MPa
Answer: 1.8 GPa = 1800 MPa — an extremely high tensile strength for piano wire grade steel.
Question 2: A research paper reports nano-hardness of 12 GPa for a TiN coating. Convert to MPa.
Solution:
Hardness in MPa = 12 × 1000
= 12,000 MPa
Answer: 12 GPa = 12,000 MPa — confirming the coating is much harder than the steel substrate (~2000 MPa HV).
Question 3: Young's modulus of a polymer composite is listed as 45 GPa. What is this in MPa for FEA input?
Solution:
Modulus in MPa = 45 × 1000
= 45,000 MPa
Answer: 45 GPa = 45,000 MPa — the value to enter in finite element analysis material cards.
Question 4: Shear modulus (G) of steel is approximately 80 GPa. Express in MPa.
Solution:
G in MPa = 80 × 1000
= 80,000 MPa
Answer: 80 GPa = 80,000 MPa — used in torsion and shear calculations.
Practice Questions: GPa to MPa
Try solving these on your own to test your understanding:
- Convert 200 GPa to MPa. (Answer: 200,000 MPa)
- A ceramic has E = 350 GPa. Express in MPa. (Answer: 350,000 MPa)
- Convert 0.345 GPa yield strength to MPa. (Answer: 345 MPa)
- Bulk modulus of water is 2.2 GPa. What is this in MPa? (Answer: 2,200 MPa)
- Convert 1.5 GPa (wire strength) to MPa. (Answer: 1,500 MPa)
When to Use GPa vs MPa in Materials Science
The convention in materials engineering: use MPa for strength values (yield, tensile, fatigue limit) which range from 20-2000 MPa, and use GPa for stiffness values (Young's modulus, shear modulus, bulk modulus) which range from 1-1200 GPa. Writing "200,000 MPa" for steel modulus or "0.345 GPa" for steel yield would be technically correct but violates convention and confuses readers. The ×1000 conversion bridges these two domains.
FEA Software Material Input: GPa or MPa?
Finite Element Analysis software (ANSYS, Abaqus, Nastran) requires consistent units. Common systems: SI (Pa, m, kg) — modulus in Pa; mm-based (MPa, mm, tonne) — modulus in MPa; or mixed. If your FEA model uses mm/MPa/tonne units (most common in structural analysis), enter E = 200,000 MPa for steel, not 200 GPa. If using m/Pa/kg, enter E = 200,000,000,000 Pa (200 × 10⁹). Getting this wrong produces nonsensical deflections or stresses.
Nano-Indentation Hardness: GPa Scale
Nano-indentation testing reports hardness in GPa, unlike traditional Vickers/Rockwell scales. Typical values: aluminum 0.5-1.5 GPa (500-1500 MPa); steel 2-8 GPa (2000-8000 MPa); ceramics 10-30 GPa (10,000-30,000 MPa); diamond 50-100 GPa (50,000-100,000 MPa). Researchers often need MPa for comparison with conventional hardness conversions or to correlate with yield strength (H ≈ 3×σy for metals).
Key Takeaways
- Multiply GPa by 1000 to get MPa (exact SI prefix conversion).
- Move the decimal three places right: 200 GPa = 200,000 MPa.
- Convention: GPa for stiffness (modulus), MPa for strength (yield, tensile).
- FEA software usually needs MPa when using mm-based unit systems.
- No approximation — this is pure SI prefix mathematics.
- Key moduli in MPa: steel 200,000; aluminum 69,000; titanium 114,000.
Gigapascal to Megapascal Conversion Formula
megapascal = gigapascal × 1000.0000000
1 gigapascal = 1000.0000000 megapascal
1 megapascal = 0.0010000 gigapascal
Reverse: gigapascal = megapascal × 0.0010000
Frequently Asked Questions
How many megapascal are in 1 gigapascal?
There are 1000.0000000 megapascal in 1 gigapascal. To convert gigapascal to megapascal, multiply the value by 1000.0000000.
How do I convert gigapascal to megapascal?
Multiply your gigapascal value by 1000.0000000 to get the equivalent in megapascal. For example, 5 gigapascal = 5 × 1000.0000000 = 5000.00000 megapascal.
How do I convert megapascal to gigapascal?
Multiply your megapascal value by 0.0010000 to get the equivalent in gigapascal. Alternatively, divide by 1000.0000000.
What is 10 gigapascal in megapascal?
10 gigapascal is equal to 10000.00000 megapascal.
What is 100 gigapascal in megapascal?
100 gigapascal is equal to 100000.00000 megapascal.