bar to mbar Converter - Bar to Millibar

Bar (bar) to Millibar (mbar)

Direct answer

1 bar = 1,000 mbar

mbar = bar × 1,000

Converter

Input

bar

Result

1,000mbar

mbar = bar × 1,000

bar = mbar × 0.001

Example: 10 bar = 10 × 1,000 = 10,000 mbar.

Express both bar and mbar in the same base unit Pa (pascal), then cancel the shared base unit.

1
Rewrite bar in the base unit
$1 bar = 100, 000 Pa$
2
Rewrite mbar in the base unit
$1 mbar = 100 Pa$
3
Forward conversion
$1 bar = \frac{100 , 000 Pa}{100 Pa} \times 1 mbar = \frac{100 , 000}{100} mbar = 1, 000 mbar$
4
Reverse conversion
$1 mbar = \frac{100 Pa}{100 , 000 Pa} \times 1 bar = \frac{100}{100 , 000} bar = 0.001 bar$

A guarded explanation for this pair page covering definition, principle, assumptions, and cautions.

Guarded output

AI text is for interpretation only. The page calculator remains the source of truth for numeric results.

1 bar = 1,000 mbar.

10 bar = 10,000 mbar.

100 bar = 100,000 mbar.

Use mbar = bar × 1,000.

1 mbar = 0.001 bar.

Use the conversion factor and round the result to the precision required by your calculation.