Convert Mbar to MPa

1 mbar equals 0.0001 MPa.

Formula: MPa = mbar × 0.0001

Mbar to MPa Converter

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How to Convert Mbar to MPa

1 mbar = 0.0001 MPa

MPa = Mbar × 0.0001

Example: 1 mbar × 0.0001 = 0.0001 MPa

Reverse Conversion

To convert MPa back to mbar:

  • Remember, 1 MPa equals 10000 mbar.
  • To convert 0.0001 MPa to mbar, multiply 0.0001 x 10000, resulting in 1 mbar.

Common Mbar to MPa Conversions

Mbar to MPa (Part 1)
Mbar MPa Actions
1 mbar 0.0001 MPa
5 mbar 0.0005 MPa
10 mbar 0.001 MPa
25 mbar 0.0025 MPa
Mbar to MPa (Part 2)
Mbar MPa Actions
50 mbar 0.005 MPa
100 mbar 0.01 MPa
500 mbar 0.05 MPa
1000 mbar 0.1 MPa

Mbar to MPa Conversion Table

Reference table with common mbar to mpa conversions. All values calculated with high precision.

Mbar to MPa Table
1 to 5000

Mbar MPa Actions
1 mbar 0.0001 MPa
2 12 mbar 0.00025 MPa
5 mbar 0.0005 MPa
10 mbar 0.001 MPa
25 mbar 0.0025 MPa
50 mbar 0.005 MPa
100 mbar 0.01 MPa
250 mbar 0.025 MPa
500 mbar 0.05 MPa
1000 mbar 0.1 MPa
2500 mbar 14 MPa
5000 mbar 12 MPa

Mbar to MPa Table
10000 to 1 × 109

Mbar MPa Actions
10000 mbar 1 MPa
25000 mbar 2 12 MPa
50000 mbar 5 MPa
100000 mbar 10 MPa
250000 mbar 25 MPa
500000 mbar 50 MPa
1000000 mbar 100 MPa
2500000 mbar 250 MPa
5000000 mbar 500 MPa
10000000 mbar 1000 MPa
2.5 × 107 mbar 2500 MPa
5 × 107 mbar 5000 MPa
1 × 108 mbar 10000 MPa
2.5 × 108 mbar 25000 MPa
5 × 108 mbar 50000 MPa
1 × 109 mbar 100000 MPa

MPa to Mbar Table
0.0001 to 12

MPa Mbar Actions
0.0001 MPa 1 mbar
0.00025 MPa 2 12 mbar
0.0005 MPa 5 mbar
0.001 MPa 10 mbar
0.0025 MPa 25 mbar
0.005 MPa 50 mbar
0.01 MPa 100 mbar
0.025 MPa 250 mbar
0.05 MPa 500 mbar
0.1 MPa 1000 mbar
14 MPa 2500 mbar
12 MPa 5000 mbar

MPa to Mbar Table
1 to 100000

MPa Mbar Actions
1 MPa 10000 mbar
2 12 MPa 25000 mbar
5 MPa 50000 mbar
10 MPa 100000 mbar
25 MPa 250000 mbar
50 MPa 500000 mbar
100 MPa 1000000 mbar
250 MPa 2500000 mbar
500 MPa 5000000 mbar
1000 MPa 10000000 mbar
2500 MPa 2.5 × 107 mbar
5000 MPa 5 × 107 mbar
10000 MPa 1 × 108 mbar
25000 MPa 2.5 × 108 mbar
50000 MPa 5 × 108 mbar
100000 MPa 1 × 109 mbar

Definition of Mbar

Millibar: The Meteorologist's Unit

The millibar (mbar) is a metric unit of pressure equal to one-thousandth of a bar, or 100 pascals. It is the traditional unit used in meteorology for measuring atmospheric pressure and is still widely used in weather forecasting, aviation, and climate science. Standard atmospheric pressure at sea level is approximately 1013.25 mbar.

Conversions to Other Units of Measurement:

  1. Hectopascal (hPa): 1 millibar equals exactly 1 hectopascal. These units are numerically identical and are used interchangeably in meteorology.
  2. Pascal (Pa): 1 millibar equals exactly 100 pascals. This is the fundamental SI relationship.
  3. Bar: 1 millibar equals exactly 0.001 bar. This follows from the definition of the millibar as one-thousandth of a bar.
  4. Atmosphere (atm): 1 millibar equals approximately 0.000986923 atm. Standard atmospheric pressure (1013.25 mbar) equals approximately 1 atm.
  5. Inches of Mercury (inHg): 1 millibar equals approximately 0.02953 inHg. This conversion is used in North American weather reports.

The millibar remains the preferred unit for meteorologists worldwide due to its convenient scale for expressing atmospheric pressure variations.

Definition
Metric pressure unit equal to one-thousandth of a bar (0.001 bar) or 100 pascals.
Exact factor
1 mbar = 100 Pa (exact);  1 mbar = 1 hPa (exact)
Common equivalents
  • 1 mbar = 0.001 bar (exact)
  • 1013.25 mbar = 1 atm (exact)
  • 1 mbar ≈ 0.02953 inHg
Sources

Definition of MPa

Megapascal: High-Pressure Applications

The megapascal (MPa) is an SI-derived unit of pressure equal to 1,000,000 pascals (1,000 kPa or 10 bar). It is commonly used in engineering and materials science for measuring high pressures, such as the tensile strength of materials, hydraulic system pressures, and geological pressures. The megapascal provides convenient numbers when dealing with pressures that would be unwieldy in pascals or kilopascals.

Conversions to Other Units of Measurement:

  1. Bar: 1 megapascal equals exactly 10 bar. This simple relationship makes MPa convenient for high-pressure industrial work. For example, 20 MPa equals 200 bar.
  2. PSI: 1 megapascal equals approximately 145.038 psi. This conversion is essential for engineering specifications. For example, a steel with 250 MPa yield strength equals approximately 36,260 psi.
  3. Kilopascal (kPa): 1 megapascal equals exactly 1,000 kPa. For example, 5 MPa equals 5,000 kPa.
  4. Pascal (Pa): 1 megapascal equals exactly 1,000,000 pascals. This is the fundamental SI relationship.
  5. Atmosphere (atm): 1 megapascal equals approximately 9.86923 atm. This shows that MPa represents significantly higher pressures than atmospheric.

The megapascal is essential in structural engineering, material science, and any application involving high pressures.

Definition
SI-derived pressure unit equal to 1,000,000 pascals (10⁶ Pa).
Exact factor
1 MPa = 1,000,000 Pa (exact);  1 MPa = 10 bar (exact)
Common equivalents
  • 1 MPa = 1,000 kPa (exact)
  • 1 MPa ≈ 145.038 psi
  • 1 MPa ≈ 9.86923 atm
Sources

About the MPa

Facts & Uses

  • 1 MPa = 1,000,000 Pa = 1 N/mm² exactly — the convenient unit for high pressures and material stresses.
  • Standard in materials science for tensile strength: structural steel ≈ 250 MPa yield, high-strength steel 400-700 MPa, carbon fiber 3500+ MPa.
  • Used in hydraulic systems (typical hydraulic pressures 10-35 MPa), injection molding, and industrial pressure vessels.
  • High-pressure applications: diamond anvil cells reach 100-300 GPa; deep ocean trenches around 100 MPa at the Mariana Trench.

Curiosities

  • Concrete compressive strength is typically expressed in MPa: 25 MPa for residential, 40+ MPa for high-rise buildings, 100+ MPa for ultra-high-performance concrete.
  • The Earth's pressure at the core-mantle boundary reaches about 136 GPa = 136,000 MPa — beyond what can be sustained at the surface in any container.
  • 1 MPa is approximately the pressure under a 1 cm column of mercury per square millimeter, or about 145 psi.
  • Approximate equivalents: 1 MPa = 145 psi = 9.87 atm = 10 bar.

Sources

Frequently Asked Questions

How many MPa are in one mbar?

One mbar equals 0.0001 MPa. To convert, multiply the mbar value by 0.0001. For the reverse, divide the MPa value by 0.0001 (or multiply by 10000).

What is 300 mbar in MPa?

300 mbar = 0.03 MPa. This is one of the most commonly searched conversions for this pair.

How precise is the mbar-to-MPa conversion?

The factor 0.0001 is accurate to 6 significant figures, derived from international measurement standards. Our calculator uses full precision internally.

Looking for the reverse? Convert MPa to Mbar

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Conversion factors verified against NIST, BIPM, ISO 80000-4 1 atm = 101 325 Pa by definition (BIPM). Last reviewed: March 2026
Adilson Fernandes By Adilson Fernandes
Tiago Fernandes Reviewed by Tiago Fernandes

All unit conversions on CoolConversion use conversion factors defined or documented by internationally recognised standards bodies (such as ISO and NIST), including both SI and non-SI units.