压力单位换算器
关于压力单位换算器的参考数据和工程信息，用于基础应用。
概述
压力是工程中的基本量，定义为每单位面积的力。各种单位s are used across different systems, such as Pascal (Pa) in SI, bar in metric, pound per square inch (psi) in imperial, and others. This reference provides conversion factors, a practical example, and tools for converting between common pressure units.
关键公式
The basic formula for pressure is:
其中 为压力， 为力， 为面积。
单位换算使用乘法系数。例如，从 psi 转换为 Pa 时，multiply the value in psi by 6894.76.
变量
| 符号 | 说明 | 单位 |
|---|---|---|
| 压力 | Pa, bar, atm, psi, etc. | |
| Force | N | |
| 面积 | m² | |
| Pa | Pascal | 1 N/m² |
| bar | Bar | 10⁵ Pa |
| atm | Standard atmosphere | 101325 Pa |
| psi | Pound per square inch | 6894.76 Pa |
| mm Hg | Millimeter of mercury | 133.322 Pa |
| in Hg | Inch of mercury | 3386.39 Pa |
Pressure Conversion Tables
压力的 SI 单位是 Pa 或 N/m2。其他压力单位，包括 bar、大气压、mm Hg 等mm H2O, m H2O, kg/cm2, pound per square foot, pound per square inch, inches Hg and inches H2O, are listed below.
请注意，kg/cm2 作为压力单位在技术上是错误的，因为 kg 是质量单位而不是力orce unit. The corresponding force-based unit is kilogram-force per square centimetre, using standard gravity.
单位 | 巴 (bar) | ||||||
|---|---|---|---|---|---|---|---|
| — | 1 | 10⁻⁵ | 9.87×10⁻⁶ | 0.0075 | 0.1 | 10⁻⁴ | 1.02×10⁻⁵ |
| — | 10⁵ | 1 | 0.987 | 750 | 1.0197×10⁴ | 10.197 | 1.0197 |
| — | 1.01×10⁵ | 1.013 | 1 | 759.9 | 10332 | 10.332 | 1.03 |
| — | 133.3 | 1.33×10⁻³ | 1.32×10⁻³ | 1 | 13.3 | 0.013 | 1.36×10⁻³ |
| — | 10 | 0.000097 | 9.87×10⁻⁵ | 0.075 | 1 | 0.001 | 1.02×10⁻⁴ |
| — | 10⁴ | 0.097 | 9.87×10⁻² | 75 | 1000 | 1 | 0.102 |
| — | 9.8×10⁴ | 0.98 | 0.97 | 735 | 10000 | 10 | 1 |
单位 | 磅/平方英寸 (psi) | |||
|---|---|---|---|---|
| — | 0.021 | 1.450326×10⁻⁴ | 2.96×10⁻⁴ | 4.02×10⁻³ |
| — | 2090 | 14.50 | 29.61 | 402 |
| — | 2117.5 | 14.69 | 29.92 | 407 |
| — | 2.79 | 0.019 | 0.039 | 0.54 |
| — | 0.209 | 1.45×10⁻³ | 2.96×10⁻³ | 0.04 |
| — | 209 | 1.45 | 2.96 | 40.2 |
| — | 2049 | 14.21 | 29.03 | 394 |
| pound/sq foot (psf) | 1 | 0.0069 | 0.014 | 0.19 |
| — | 144 | 1 | 2.04 | 27.7 |
| — | 70.8 | 0.49 | 1 | 13.57 |
| — | 5.2 | 0.036 | 0.074 | 1 |
Some other Pressure Units
工程和技术工作中使用的其他压力单位包括托、工程大气压here, standard atmosphere, pound per square foot, pound per square inch, inches mercury and inches water. The converter and tables on this page preserve these units as force per area equivalents.
psi to bar Nomogram
The original psi_bar.png nomogram is represented below as an interactive linear conversion using 1 psi = 0.0689476 bar.
psi 至 bar 列线图
psi to kPa Nomogram
The original psi_kpa.png nomogram is represented below as an interactive linear conversion using 1 psi = 6.89476 kPa.
psi 至 kPa 列线图
kPa vs bar, psi, mmH2O and inH2O
The original kPa_vs_bar_psi_mmh2o_inh2o.png comparison chart is represented below as interactive data.
kPa 与 bar、psi、mmH2O 和 inH2O 对照
计算示例
Convert 10 psi to Pa using the factor 6894.76:
.
压力 单位 转换器
还原的原始源表
以下表格还原自原始来源页面，以保留完整的参考数据。
Pressure Converter
| — | 1 | 10-5 | 9.87×10-6 | 0.0075 | 0.1 | 10-4 | 1.02×10-5 |
| — | 105 | 1 | 0.987 | 750 | 1.0197×104 | 10.197 | 1.0197 |
| — | 1.01×105 | 1.013 | 1 | 759.9 | 10332 | 10.332 | 1.03 |
| — | 133.3 | 1.33×10-3 | 1.32×10-3 | 1 | 13.3 | 0.013 | 1.36×10-3 |
| — | 10 | 0.000097 | 9.87×10-5 | 0.075 | 1 | 0.001 | 1.02×10-4 |
| — | 104 | 0.097 | 9.87×10-2 | 75 | 1000 | 1 | 0.102 |
| — | 9.8×104 | 0.98 | 0.97 | 735 | 10000 | 10 | 1 |
| — | 47.8 | 4.78×10-4 | 4.72×10-4 | 0.36 | 4.78 | 4.78×10-3 | 4.88×10-4 |
| — | 6894.76 | 0.069 | 0.068 | 51.7 | 689.7 | 0.69 | 0.07 |
| — | 3377 | 0.0338 | 0.033 | 25.4 | 337.7 | 0.337 | 0.034 |
| — | 248.8 | 2.49×10-3 | 2.46×10-3 | 1.87 | 25.4 | 0.0254 | 0.0025 |
来源: engineeringtoolbox.com
Pressure Converter
| — | 0.021 | 1.450326×10-4 | 2.96×10-4 | 4.02×10-3 |
| — | 2090 | 14.5 | 29.61 | 402 |
| — | 2117.5 | 14.69 | 29.92 | 407 |
| — | 2.79 | 0.019 | 0.039 | 0.54 |
| — | 0.209 | 1.45×10-3 | 2.96×10-3 | 0.04 |
| — | 209 | 1.45 | 2.96 | 40.2 |
| — | 2049 | 14.21 | 29.03 | 394 |
| pound square feet (psf) | 1 | 0.0069 | 0.014 | 0.19 |
| — | 144 | 1 | 2.04 | 27.7 |
| — | 70.8 | 0.49 | 1 | 13.57 |
| — | 5.2 | 0.036 | 0.074 | 1 |
来源: engineeringtoolbox.com
原始源图
以下原始来源图像予以保留，以免丢失视觉参考资料。当图像包含图表或表格数据时，其提取值已呈现在页面的表格、计算器或交互式图表中；其余图像保留为视觉来源参考。
工程要点
- 压力是每单位面积的力；kg/cm² 等单位在技术上是错误的，因为千克 is a mass unit. For accurate use, multiply by gravitational acceleration (g ≈ 9.80665 m/s²) to convert to force-based units like N/m².
- 换算系数假定标准条件（如 1 atm = 101325 Pa）。对于 mm Hg 等单位 and inches Hg, which depend on mercury density and gravity, variations with temperature and location can introduce errors in high-precision work.
- 进行工程计算时，请确保所有压力值都转换为一致ent units to avoid mistakes. For example, in fluid dynamics, mixing psi and Pa without conversion can lead to significant errors.
- 表格提供直接换算的乘法系数；对于复杂系统，请考虑r using dimensional analysis or dedicated unit conversion software for reliability.