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。

壓力換算

From

Common Pressure Values

All Pressure Units

Conversion Result

0.00001 psi

1 Pa to PSI

Conversion Factor

1 Pascal = 0.000145 PSI

快速參考

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

如何使用壓力轉換器

Enter Pressure

Input the pressure value to convert

Select From Unit

Choose the original pressure unit

Select To Unit

Choose the target pressure unit

檢視結果

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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

壓力單位換算表

最常用的換算盡在一處。Pa 衍生單位的數值均為精確值;PSI 採用標準定義 1 psi = 6,894.757 Pa。

轉換	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

實際壓力參考值

• 房車輪胎: 冷胎 32–36 PSI（2.2–2.5 Bar）
• 登山自行車輪胎: 25–35 PSI；公路車：80–130 PSI
• 海平面標準大氣壓: 101,325 Pa = 14.7 PSI = 1,013.25 hPa
• 家庭自來水水壓: 40–60 PSI（2.8–4.1 Bar）
• 水肺潛水氣瓶(滿充): ~3,000 PSI ≈ 207 Bar
• 義式咖啡機： 萃取時 9 Bar
• 汽車渦輪增壓值： 通常為 0.5–1.2 Bar(7–18 PSI)
• 真空(粗略): 低於 760 Torr 直至約 1 Torr

計算範例

將 2.5 Bar 轉換為 PSI（胎壓檢查）

2.5 Bar × 14.5038 = 36.26 PSI

將 1 MPa 轉換為 PSI（液壓規格表）

1 MPa × 145.038 = 145.04 PSI

將 30 PSI 轉換為 mmHg（醫療／實驗室情境）

30 PSI × 51.7149 = 1,551.4 mmHg

將 1 標準大氣壓轉換為 kPa

1 atm × 101.325 = 101.325 kPa

即時轉換

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.