圧力 単位変換ツール
PSI、bar、kPa、atm、mmHg
Required Parameters
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Quick Answer
1 atm = 101.325 kPa = 14.696 psi = 1.01325 bar = 760 mmHg. Use gauge pressure (PSIG) for most industrial applications and absolute pressure (PSIA) for vacuum and thermodynamic calculations.
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Calculadora de Conversao de Pressao
Converta entre unidades de pressao: Pascal, bar, psi, atm, mmHg e Torr.
Design Notes
Pressure sensing in electronics uses MEMS sensors calibrated in Pa or PSI. Common full-scale ranges: 100 Pa (HVAC), 100 kPa (barometric), 700 kPa (tire/pneumatic), 35 MPa (hydraulic). Always specify gauge vs absolute.
Common Mistakes
- 1
Confusing gauge pressure (relative to atmosphere) with absolute pressure (relative to vacuum).
- 2
Using 1 bar = 1 atm as an approximation when precision matters (1 bar = 100 kPa, 1 atm = 101.325 kPa).
- 3
Forgetting to specify PSIG vs PSIA — the 14.7 psi difference matters for calculations.
Knowledge Base
1barは何kPa？
正確に100kPa。ほぼ1気圧（1atm = 101.325kPa）。
PSIとは？
Pounds per Square Inch。1 PSI = 6.895 kPa。タイヤ空気圧：約30〜35 PSI。
ゲージ圧と絶対圧の違いは？
絶対圧：真空基準。ゲージ圧：大気圧基準。P絶対 = Pゲージ + P大気。
パスカルとは？
SI単位：1Pa = 1N/m²。非常に小さい単位で、大気圧 = 101,325Pa。
barからPSIへの変換は？
bar × 14.504。例：2.5 bar = 36.26 PSI。