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To convert from millibar (mbar) to kilopound per square inch (ksi), use the following formula:
With is the ratio between the base units kilopound per square inch (ksi) and kilopascal (kPa).
Let's convert 5 millibar (mbar) to kilopound per square inch (ksi).
Using the formula:
Therefore, 5 millibar (mbar) is equal to kilopound per square inch (ksi).
Here are some quick reference conversions from millibar (mbar) to kilopound per square inch (ksi):
| millibar | kilopound per square inch |
|---|---|
| 0.000001 mbar | ksi |
| 0.001 mbar | ksi |
| 0.1 mbar | ksi |
| 1 mbar | ksi |
| 2 mbar | ksi |
| 3 mbar | ksi |
| 4 mbar | ksi |
| 5 mbar | ksi |
| 6 mbar | ksi |
| 7 mbar | ksi |
| 8 mbar | ksi |
| 9 mbar | ksi |
| 10 mbar | ksi |
| 20 mbar | ksi |
| 30 mbar | ksi |
| 40 mbar | ksi |
| 50 mbar | ksi |
| 100 mbar | ksi |
| 1000 mbar | ksi |
| 10000 mbar | ksi |
For all Pressure converters, choose units using the From/To dropdowns above.
A millibar (mbar) is a metric unit used to measure atmospheric pressure.
It's most commonly used in weather forecasting and reporting.
(Technically, one millibar is equal to 0.1 kilopascal, or kPa).
Meteorologists use millibars as the primary unit to measure and report atmospheric pressure.
On weather maps, you'll see lines called isobars, which connect areas of equal pressure, drawn in millibar intervals.
Standard atmospheric pressure at sea level is about 1013 mbar.
This number is a key benchmark for weather conditions:
Yes, for all practical purposes, a millibar (mbar) and a hectopascal (hPa) are the same.
The two units are used interchangeably.
The conversion is simple: 1 mbar = 1 hPa.
While you'll still see millibars in public weather reports (especially in the U.S.), the hectopascal is the preferred SI (International System of Units) unit for global scientific consistency.
A barometer measures barometric pressure—the weight of the air above you—using millibars.
Watching the change in this reading is key to predicting the weather:
A kilopound per square inch (ksi) is a unit of pressure and stress used in the Imperial and US customary systems of measurement.
It represents a force of one thousand pounds-force applied to an area of one square inch.
A kilopound per square inch (ksi) is a scaled unit directly related to the more common pound per square inch (psi). The prefix "kilo-" signifies one thousand.
Here are the most common conversions:
The conversion to megapascals (MPa) is essential for converting measurements to the SI (metric) system.
In materials science and structural engineering, ksi is a primary unit for quantifying the mechanical properties and material strength of a substance.
It is commonly used to express:
For example, the strength of high-performance materials like structural steel and aluminum alloys is frequently specified in ksi.
This provides engineers with the critical data needed for safe and reliable design.
While the metric system's megapascal (MPa) is the international standard, ksi remains prevalent in American engineering, particularly in the aerospace, automotive, and construction industries.