Kips per square inch.
KSI to Millibars Converter — ksi to mbar
Convert KSI (ksi) to Millibar (mbar) using the exact conversion factor (1 ksi = 68,947.57293 millibar). See the formula, worked examples, and conversion table.
KSI 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 6.89475729e+6 / 100.
Pressure uses the pascal as the base unit.
Reserved above the conversion cards and below the converter.
About Converting KSI to Millibars
KSI 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: Kips per square inch, and a millibar is 100 pascals.
Formula
millibars = ksi × 68947.5729317
This factor comes from each unit's defined relationship to the category's base unit: 1 ksi equals 6894757.29317 base units, and 1 millibar equals 100 base units, so dividing one by the other gives the direct ksi-to-millibar factor of 68947.5729317.
Simple example
1 ksi × 68947.57293 = 68,947.57293 mbar
1 ksi = 68,947.57293 millibars.
Real-world example
35 ksi × 68947.57293 = 2,413,165.053 mbar
35 ksi = 2,413,165.053 millibars.
Conversion table
| KSI (ksi) | Millibar (mbar) |
|---|---|
| 1 ksi | 68,947.57293 mbar |
| 5 ksi | 344,737.8647 mbar |
| 10 ksi | 689,475.7293 mbar |
| 25 ksi | 1,723,689.323 mbar |
| 50 ksi | 3,447,378.647 mbar |
| 100 ksi | 6,894,757.293 mbar |
Reverse conversion: Millibar to KSI
1 mbar × 0.00001450377377 = 0.0000145038 ksi
1 millibar = 0.0000145038 ksi.
ksi = millibars × 0.000014503773773
For a page dedicated to this direction, see Millibar to KSI.
Understanding the KSI (ksi)
Kips per square inch.
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 ksi?
1 ksi equals 68,947.57293 millibars, using the exact defined conversion factor rather than an estimate.
How do I convert ksi to millibar?
Multiply the ksi value by 68947.57293. The converter above does this instantly to whatever precision you set.
How do I convert millibar back to ksi?
Use the reverse factor: 1 millibar equals 0.0000145038 ksi. You can also use the swap control in the converter above to flip the direction instantly.
What is a ksi?
KSI (ksi) is a unit of pressure.
What is a millibar?
Millibar (mbar) is a unit of pressure.
Is the ksi to millibar conversion exact?
Yes. Both ksi and millibar are defined by fixed standards rather than physical artifacts, so the factor of 68947.57293 used above is exact to as many digits as you choose to display.