A millibar is 100 pascals.
Millibars to Nanopascals Converter — mbar to nPa
Convert Millibar (mbar) to Nanopascal (nPa) using the exact conversion factor (1 millibar = 100,000,000,000 nanopascal). See the formula, worked examples, and conversion table.
Millibars to Nanopascals converter
Converter
Pressure Converter
Convert pascals, bars, PSI, atmospheres, mercury columns, water columns, and engineering pressure units.
Context values
Some unit families need one extra value for a physically accurate result.
Nanopascal is 1e-9 pascal units.
Result = input x 100 / 1e-9.
Pressure uses the pascal as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Millibars to Nanopascals
Millibar and Nanopascal both show up on pressure gauges — psi is standard on US tire and tool specifications, while bar is the everyday pressure unit across most of the rest of the world. Specifically: A millibar is 100 pascals, and nanopascal is 1e-9 pascal units.
Formula
nanopascals = millibars × 100000000000
This factor comes from each unit's defined relationship to the category's base unit: 1 millibar equals 100 base units, and 1 nanopascal equals 1e-9 base units, so dividing one by the other gives the direct millibar-to-nanopascal factor of 100000000000.
Simple example
1 mbar × 100000000000 = 100,000,000,000 nPa
1 millibar = 100,000,000,000 nanopascals.
Real-world example
35 mbar × 100000000000 = 3.5e+12 nPa
35 millibars = 3.5e+12 nanopascals.
Conversion table
| Millibar (mbar) | Nanopascal (nPa) |
|---|---|
| 1 mbar | 100,000,000,000 nPa |
| 5 mbar | 500,000,000,000 nPa |
| 10 mbar | 1,000,000,000,000 nPa |
| 25 mbar | 2.5e+12 nPa |
| 50 mbar | 5e+12 nPa |
| 100 mbar | 1e+13 nPa |
Reverse conversion: Nanopascal to Millibar
1 nPa × 1e-11 = 1e-11 mbar
1 nanopascal = 1e-11 millibars.
millibars = nanopascals × 1e-11
For a page dedicated to this direction, see Nanopascal to Millibar.
Understanding the Millibar (mbar)
A millibar is 100 pascals.
Understanding the Nanopascal (nPa)
Nanopascal is 1e-9 pascal units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many nanopascals are in 1 millibar?
1 millibar equals 100,000,000,000 nanopascals, using the exact defined conversion factor rather than an estimate.
How do I convert millibar to nanopascal?
Multiply the millibar value by 100000000000. The converter above does this instantly to whatever precision you set.
How do I convert nanopascal back to millibar?
Use the reverse factor: 1 nanopascal equals 1e-11 millibars. You can also use the swap control in the converter above to flip the direction instantly.
What is a millibar?
Millibar (mbar) is a unit of pressure.
What is a nanopascal?
Nanopascal (nPa) is a unit of pressure.
Is the millibar to nanopascal conversion exact?
Yes. Both millibar and nanopascal are defined by fixed standards rather than physical artifacts, so the factor of 100000000000 used above is exact to as many digits as you choose to display.