Millibar to Pounds per Square Inch Pressure Converter
Convert Millibar (mbar) to PSI (psi) with this free calculator. Type a value, press Convert, and the page applies the same factor shown in the formula below — no rounded shortcut, and nothing is stored on a server.
PSI to Millibar (psi to mbar) ►
How to convert Millibar to Pounds per Square Inch
1 mbar = 100 Pa
1 psi = 1 lbfin2
1 millibar (mbar) is equal to 0.01450377 psi (psi).
psi = mbar × 0.01450377
Multiply the pressure in millibars by 0.01450377:
Example: Convert 1013.25 mbar to psi:
psi = 1013.25 × 0.01450377 = 14.6959 psi
What is a Millibar?
The Millibar (mbar) is the starting or target unit on this page. Use the calculator above to convert values without looking up the factor by hand.
What is a PSI?
The PSI (psi) is the starting or target unit on this page. Use the calculator above to convert values without looking up the factor by hand.
This page converts pressure from Millibar into PSI. One mbar equals 0.014503774 psi.
Millibar to PSI conversion table
Common mbar values and the matching psi result, calculated with the same factor as the widget. Highlight a nearby row if you want a quick check without entering a number.
| Millibar (mbar) | PSI (psi) |
|---|---|
| 1 mbar | 0.014503774 psi |
| 10 mbar | 0.145037738 psi |
| 100 mbar | 1.450377377 psi |
| 1013 mbar | 14.692322832 psi |
| 1000 mbar | 14.503773773 psi |
| 10000 mbar | 145.037737734 psi |
How this calculator works
The form on this page is a Millibar-to-PSI converter. After you enter a number, JavaScript multiplies or rearranges it with the published conversion factor and writes the psi result in the output box. The step-by-step panel repeats the arithmetic so you can copy it into homework or a spreadsheet.
Reviewed by Hamsen, founder of GigaTables and a biology engineer. See the about page for how formulas are checked before a tool is published.
FAQ
How many psi are in 1 mbar?
1 mbar = 0.014503774 psi.
How do I convert Millibar to PSI?
Multiply the pressure in millibars by 0.01450377:
Is this mbar to psi converter free?
Yes. GigaTables calculators are free to use in a browser. You do not need an account, and the values you type are not uploaded.