mbar to psi Converter
Convert millibar (mbar) to psi instantly. Enter the pressure, choose units (mbar, bar, Pa, kPa, MPa, psi, atm, torr) and get an accurate conversion. Includes formula, examples, and atmospheric reference values.
Full original guide (expanded)
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.
1013 mbar ≈ standard atmosphere
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.
Formula (LaTeX) + variables + units
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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.
- No variables provided in audit spec.
- NIST — Weights and measures — nist.gov · Accessed 2026-01-19
https://www.nist.gov/pml/weights-and-measures - NIST — SI units — nist.gov · Accessed 2026-01-19
https://www.nist.gov/pml/owm/metric-si/si-units
Last code update: 2026-01-19
- Initial audit spec draft generated from HTML extraction (review required).
- Verify formulas match the calculator engine and convert any text-only formulas to LaTeX.
- Confirm sources are authoritative and relevant to the calculator methodology.