压力转换器

在帕斯卡、PSI、巴、标准大气压、托和毫米汞柱之间进行转换，精度高且提供有用的参考。

压力换算

From

Common Pressure Values

All Pressure Units

Conversion Result

0.00001 psi

1 Pa to PSI

Conversion Factor

1 Pascal = 0.000145 PSI

快速参考

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

如何使用压力转换器

Enter Pressure

Input the pressure value to convert

Select From Unit

Choose the original pressure unit

Select To Unit

Choose the target pressure unit

查看结果

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

压力单位换算表

最常用的换算尽在一处。Pa 衍生单位的数值均为精确值;PSI 采用标准定义 1 psi = 6,894.757 Pa。

转换	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

实际压力参考值

• 乘用车轮胎: 冷胎 32–36 PSI（2.2–2.5 Bar）
• 山地自行车轮胎: 25–35 PSI；公路车：80–130 PSI
• 海平面标准大气压: 101,325 Pa = 14.7 PSI = 1,013.25 hPa
• 家庭自来水压: 40–60 PSI（2.8–4.1 Bar）
• 水肺潜水气瓶(满充): ~3,000 PSI ≈ 207 Bar
• 意式咖啡机： 萃取时 9 Bar
• 汽车涡轮增压值： 通常为 0.5–1.2 Bar(7–18 PSI)
• 真空(粗略): 低于 760 Torr 直至约 1 Torr

计算示例

将 2.5 Bar 转换为 PSI（轮胎压力检查）

2.5 Bar × 14.5038 = 36.26 PSI

将 1 MPa 转换为 PSI（液压规格表）

1 MPa × 145.038 = 145.04 PSI

将 30 PSI 转换为 mmHg（医疗/实验室场景）

30 PSI × 51.7149 = 1,551.4 mmHg

将 1 个标准大气压转换为 kPa

1 atm × 101.325 = 101.325 kPa

即时转换

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.