Convert Millibar to PSI

Convert Millibar to PSI for cross-unit reporting in weather, HVAC, and light industrial contexts.

From

Enter Value

How to Convert Millibar to Psi

To convert Millibar to PSI, multiply mbar by 0.0145038.

Conversion Formula:

value * 0.0145038

Understanding the Conversion

Millibar to PSI is used when atmospheric-style readings must be shown on PSI gauges. Multiply mbar by 0.0145038. For example, 1,013.25 mbar ≈ 14.7 psi (sea-level pressure). This is handy for mixed-unit audiences while keeping the original mbar/hPa source.

Conversion Examples

Example: Convert 1,013.25 mbar to psi

Step 1: 1,013.25 × 0.0145038 ≈ 14.7.
Step 2: Result ≈ 14.7 psi.
Step 3: Atmospheric reference.

1,013.25 mbar ≈ 14.7 psi

Sea-level pressure in psi.

Example: Convert 500 mbar to psi

Step 1: 500 × 0.0145038 ≈ 7.25.
Step 2: Result ≈ 7.25 psi.
Step 3: Mid-pressure example.

500 mbar ≈ 7.25 psi

Mid-level pressure.

Example: Convert 2000 mbar to psi

Step 1: 2000 × 0.0145038 ≈ 29.01.
Step 2: Result ≈ 29 psi.
Step 3: Higher pressure example.

2000 mbar ≈ 29.0 psi

Higher range illustration.

Conversion Formula

Multiply mbar by 0.0145038 (or divide by 68.9476) to move to psi.

Conversion Chart

Millibar	Psi
250	3.63
500	7.25
750	10.88
1000	14.5
1013.25	14.7
1500	21.76
2000	29.01
2500	36.26
5000	72.53
8000	116.05

Quick Conversion Tip

mbar ÷ 69 ≈ psi for a rough check; use 68.9476 for accuracy.

Unit Definitions

Millibar (mbar)

Atmospheric unit equal to hPa.

1 mbar = 0.0145038 psi = 0.1 kPa = 100 Pa.

Pound per Square Inch (psi)

Imperial pressure unit.

psi to mbar divide by 68.9476; psi to kPa multiply by 6.89476.

Common Use Cases

Weather data presented to psi-only audiences
HVAC/cleanroom: convert mbar readings to psi
Education: show atmospheric pressures in psi
Mixed-unit dashboards and reports

Frequently Asked Questions

Why convert mbar to psi?

Some gauges and audiences use psi; converting avoids confusion while keeping data consistent.

Is the factor exact?

0.0145038 is derived from the standard 68.9476 mbar per psi and is used precisely.

How to go back?

Divide psi by 0.0145038 (or multiply by 68.9476) to return to mbar.