Femtopascal is 1e-15 pascal units.
Femtopascals to Millibars Converter — fPa to mbar
Convert Femtopascal (fPa) to Millibar (mbar) using the exact conversion factor (1 femtopascal = 1e-17 millibar). See the formula, worked examples, and conversion table.
Femtopascals to Millibars 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.
A millibar is 100 pascals.
Result = input x 1e-15 / 100.
Pressure uses the pascal as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Femtopascals to Millibars
Femtopascal and Millibar 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: Femtopascal is 1e-15 pascal units, and a millibar is 100 pascals.
Formula
millibars = femtopascals × 1e-17
This factor comes from each unit's defined relationship to the category's base unit: 1 femtopascal equals 1e-15 base units, and 1 millibar equals 100 base units, so dividing one by the other gives the direct femtopascal-to-millibar factor of 1e-17.
Simple example
1 fPa × 1e-17 = 1e-17 mbar
1 femtopascal = 1e-17 millibars.
Real-world example
35 fPa × 1e-17 = 3.5e-16 mbar
35 femtopascals = 3.5e-16 millibars.
Conversion table
| Femtopascal (fPa) | Millibar (mbar) |
|---|---|
| 1 fPa | 1e-17 mbar |
| 5 fPa | 5e-17 mbar |
| 10 fPa | 1e-16 mbar |
| 25 fPa | 2.5e-16 mbar |
| 50 fPa | 5e-16 mbar |
| 100 fPa | 1e-15 mbar |
Reverse conversion: Millibar to Femtopascal
1e-17 mbar × 1e+17 = 1 fPa
1e-17 millibars = 1 femtopascal.
femtopascals = millibars × 1e+17
For a page dedicated to this direction, see Millibar to Femtopascal.
Understanding the Femtopascal (fPa)
Femtopascal is 1e-15 pascal units.
Understanding the Millibar (mbar)
A millibar is 100 pascals.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many millibars are in 1 femtopascal?
1 femtopascal equals 1e-17 millibars, using the exact defined conversion factor rather than an estimate.
How do I convert femtopascal to millibar?
Multiply the femtopascal value by 1e-17. The converter above does this instantly to whatever precision you set.
How do I convert millibar back to femtopascal?
Use the reverse factor: 1 millibar equals 1e+17 femtopascals. You can also use the swap control in the converter above to flip the direction instantly.
What is a femtopascal?
Femtopascal (fPa) is a unit of pressure.
What is a millibar?
Millibar (mbar) is a unit of pressure.
Is the femtopascal to millibar conversion exact?
Yes. Both femtopascal and millibar are defined by fixed standards rather than physical artifacts, so the factor of 1e-17 used above is exact to as many digits as you choose to display.