Pressure Converter

Convert between Pascal, PSI, Bar, Atmosphere, Torr, and mmHg with precision and helpful references.

Pressure Conversion

From

Common Pressure Values

All Pressure Units

Conversion Result

0.00001 psi

1 Pa to PSI

Conversion Factor

1 Pascal = 0.000145 PSI

Quick Reference

1 atm = 101.325 kPa
1 bar = 100 kPa
1 atm = 14.7 psi
1 psi = 6.895 kPa

How to Use the Pressure Converter

Enter Pressure

Input the pressure value to convert

Select From Unit

Choose the original pressure unit

Select To Unit

Choose the target pressure unit

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See instant conversion with formulas

Understanding Pressure Conversion

What is Pressure Conversion?

Pressure conversion transforms measurements between units like Pascal, Bar, PSI, and Atmosphere. Essential for engineering, meteorology, tire pressure, and industrial applications where different pressure standards are used.

• Pascal (Pa): SI unit, used in scientific contexts
• Bar: Metric unit common in weather and industry
• PSI: Pounds per square inch - US standard
• Atmosphere: Standard atmospheric pressure unit

Why Convert Pressure?

Different industries and regions use different pressure units. Converting between them is essential for tire pressure, weather forecasting, engineering specifications, and scientific research accuracy.

• Tire Pressure: Convert between PSI and Bar for vehicles
• Weather: Atmospheric pressure in different units
• Engineering: Industrial equipment specifications
• Science: Lab experiments require precise units

Pressure Unit Conversion Table

The most common conversions in one place. Values are exact for Pa-derived units; PSI uses the standard 1 psi = 6,894.757 Pa definition.

Convert	Pa	Bar	PSI	atm	mmHg
1 Pa	1	0.00001	0.000145	9.87e-6	0.0075
1 kPa	1,000	0.01	0.145038	0.009869	7.5006
1 MPa	1,000,000	10	145.038	9.8692	7,500.6
1 Bar	100,000	1	14.5038	0.986923	750.06
1 PSI	6,894.757	0.0689476	1	0.068046	51.7149
1 atm	101,325	1.01325	14.6959	1	760
1 Torr	133.322	0.00133322	0.0193368	0.00131579	1
1 mmHg	133.322	0.00133322	0.0193368	0.00131579	1

Real-World Pressure Reference Values

• Passenger car tire: 32–36 PSI (2.2–2.5 Bar) cold
• Mountain bike tire: 25–35 PSI; road bike: 80–130 PSI
• Sea-level atmosphere: 101,325 Pa = 14.7 PSI = 1,013.25 hPa
• Household water pressure: 40–60 PSI (2.8–4.1 Bar)
• Scuba tank (full): ~3,000 PSI ≈ 207 Bar
• Espresso machine: 9 Bar during extraction
• Car turbo boost: typically 0.5–1.2 Bar (7–18 PSI)
• Vacuum (rough): below 760 Torr down to ~1 Torr

Worked Examples

Convert 2.5 Bar to PSI (tire pressure check)

2.5 Bar × 14.5038 = 36.26 PSI

Convert 1 MPa to PSI (hydraulic spec sheet)

1 MPa × 145.038 = 145.04 PSI

Convert 30 PSI to mmHg (medical/lab context)

30 PSI × 51.7149 = 1,551.4 mmHg

Convert 1 standard atmosphere to kPa

1 atm × 101.325 = 101.325 kPa

Instant Conversion

Real-time pressure conversion between 8+ standard units.

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Pressure Conversion FAQ

What units are supported?

Supported units include Pascal, Kilopascal, Megapascal, Bar, PSI, Atmosphere, Torr, and mmHg.

Is this suitable for engineering calculations?

Yes. The converter uses standard SI-based conversion factors with precise decimal output.

Can I convert very small or very large values?

Yes. Decimal and large magnitude values are supported for technical and industrial usage.