Convert Millibars to Gigapascals (mbar to GPa)
1 millibar (mbar) = 1 × 10⁻⁷ gigapascals (GPa). 1 GPa = 10000000 mbar. Example: 15 mbar = 15 × 1 × 10⁻⁷ = 0.0000015 GPa.
Also searched as millibars to GPa, millibars in GPa, millibars into gigapascals, mbar to GPa, mbar in gigapascals, mbar into gigapascal, millibar to gigapascal, mbar to gigapascals converter and how many gigapascals in a millibar.
1 mbar = 1e-7 GPa
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk millibar to gigapascal converter to paste a column from Excel.
How to Convert Millibar to Gigapascal
- 1 mbar = 1 × 10⁻⁷ GPa
- 1 GPa = 10000000 mbar
- Example: convert 15 mbar to GPa: 15 mbar = 15 × 1 × 10⁻⁷ GPa = 0.0000015 GPa
Formula
GPa = mbar ÷ 10000000
Derivation from SI units:
- 1 mbar = 10⁻³ bar = 100 Pa = 1 hPa
- 1 GPa = 10⁹ Pa = 1000 MPa = 1 kN/mm²
- 1 mbar = 100 Pa ÷ 1000000000 Pa per GPa = 1 × 10⁻⁷ GPa
Both units are defined exactly, so the factor is exact. Millibar definition: millibar; Gigapascal definition: gigapascal.
Worked examples
- A reading of 20 mbar converts to 0.000002 GPa.
20 mbar × 1 × 10⁻⁷ = 0.000002 GPa - A value of 900 mbar is 0.00009 GPa.
900 mbar × 1 × 10⁻⁷ = 0.00009 GPa
Millibar to Gigapascal conversion table
| Millibars (mbar) | Gigapascals (GPa) |
|---|---|
| 0.1 mbar | 1 × 10⁻⁸ GPa |
| 0.5 mbar | 5 × 10⁻⁸ GPa |
| 1 mbar | 1 × 10⁻⁷ GPa |
| 2 mbar | 2 × 10⁻⁷ GPa |
| 5 mbar | 5 × 10⁻⁷ GPa |
| 10 mbar | 0.000001 GPa |
| 20 mbar | 0.000002 GPa |
| 25 mbar | 0.0000025 GPa |
| 37 mbar | 0.0000037 GPa |
| 50 mbar | 0.000005 GPa |
| 100 mbar | 0.00001 GPa |
| 250 mbar | 0.000025 GPa |
| 500 mbar | 0.00005 GPa |
| 900 mbar | 0.00009 GPa |
| 950 mbar | 0.000095 GPa |
| 980 mbar | 0.000098 GPa |
| 1000 mbar | 0.0001 GPa |
| 1013.25 mbar | 0.000101325 GPa |
| 1020 mbar | 0.000102 GPa |
| 1050 mbar | 0.000105 GPa |
Where it's used
Millibars are used for weather maps and barometers (sea level ≈ 1013 mbar), while gigapascals appear in young's modulus and shear modulus of metals, ceramics and composites. Both measure pressure, stress and differential pressure (force per unit area), so the conversion is a fixed factor.
Millibar to other pressure units
| Conversion | 1 mbar equals |
|---|---|
| millibar to gigapascal | 1 × 10⁻⁷ GPa |
| millibar to pascal | 100 Pa |
| millibar to kilopascal | 0.1 kPa |
| millibar to ksi | 0.00001450377377 ksi |
| millibar to kilogram-force per square centimetre | 0.001019716213 kgf/cm² |
| millibar to psi | 0.01450377377 psi |
| millibar to bar | 0.001 bar |
| millibar to millimeter of mercury | 0.7500615758 mmHg |
Show 12 more units
| millibar to inch of water | 0.401463076 inH₂O |
|---|---|
| millibar to atmosphere | 0.0009869232667 atm |
| millibar to megapascal | 0.0001 MPa |
| millibar to newton per square millimetre | 0.0001 N/mm² |
| millibar to kilogram-force per square millimetre | 0.00001019716213 kgf/mm² |
| millibar to torr | 0.7500616827 Torr |
| millibar to millimeter of water | 10.19716213 mmH₂O |
| millibar to centimeter of water | 1.019716213 cmH₂O |
| millibar to inch of mercury | 0.0295299833 inHg |
| millibar to decibar | 0.01 dbar |
| millibar to inch of water (60 °F) | 0.401864652 inH₂O (60 °F) |
| millibar to barye | 1000 Ba |
Frequently asked questions
How many gigapascals are in 1 millibar?
1 mbar = 1 × 10⁻⁷ GPa.
How do I convert millibars to gigapascals?
Multiply the value in mbar by 1 × 10⁻⁷, or divide it by 10000000. For example, 15 mbar × 1 × 10⁻⁷ = 0.0000015 GPa.
Is the mbar to GPa conversion exact?
Yes. Both units are defined exactly, and 1 mbar is exactly 1 × 10⁻⁷ GPa.
Sources
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "millibar".
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 7, SI prefixes.
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert Millibars to Gigapascals (mbar to GPa). Retrieved October 25, 2026, from https://scientificconverters.com/pressure/millibar-to-gigapascal/
IEEE
Scientific Converters, "Convert Millibars to Gigapascals (mbar to GPa)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/pressure/millibar-to-gigapascal/