How do you convert mbar to psi?

Multiply the pressure in millibar by 0.0145037738 to get psi. Formula: psi = mbar × 0.0145037738.

How many psi are 1013 mbar?

1013 mbar × 0.0145037738 ≈ 14.69 psi, which is approximately standard atmospheric pressure at sea level.

Can I convert between other pressure units?

Yes. This tool also converts bar, Pa, kPa, MPa, atm, and Torr by normalizing to pascal (Pa).

mbar to psi Converter

Convert millibar to pounds per square inch (psi) and between other common pressure units. Useful for meteorology, HVAC, pneumatics and sensor datasheets. We normalize to pascal (Pa) to keep results engineering-accurate.

Value

1013 mbar ≈ standard atmosphere

From unit

To unit

Converted 1013 mbar → 14.69 psi

Result

14.6959

Common pressure references

Description	mbar	psi	kPa
Standard atmosphere	1013 mbar	14.6959 psi	101.325 kPa
1 bar	1000 mbar	14.5038 psi	100 kPa
Typical car tyre (2.4 bar)	2400 mbar	34.809 psi	240 kPa

Formula mbar → psi

psi = mbar × 0.0145037738

This comes from: 1 mbar = 100 Pa, 1 psi = 6894.757 Pa, so 1 mbar = 100 / 6894.757 psi ≈ 0.0145037738 psi.

Example

Convert 750 mbar to psi:

\( 750 \times 0.0145037738 = 10.8778 \text{ psi} \)

Supported units

mbar (millibar)
bar
Pa, kPa, MPa
psi (pound per square inch)
atm (standard atmosphere)
Torr / mmHg

All conversions are done via pascal so you keep consistency across the site.