πŸ”§Pressure Unit Converter

Convert between Pa, kPa, MPa, bar, psi, atm, mmHg, and hPa

How to Use the Pressure Unit Converter

Pressure units vary widely by application. In the US, tire pressure uses psi, blood pressure uses mmHg, weather forecasting uses hPa (or inHg), and engineering uses MPa or bar. Scientific contexts use pascals (Pa) as the SI unit. Switching between these requires precise conversion factors.

Enter any pressure value, select its unit, and instantly see the result in all 8 pressure units at once. No manual calculation needed.

Key Pressure Conversion References

Common uses: checking tire pressure (psi to kPa), understanding barometric weather readings (hPa), verifying industrial hydraulic specifications (bar to MPa), and comparing global pressure standards.

Frequently Asked Questions

What is normal tire pressure in psi and kPa?

Most cars recommend 32–35 psi (220–241 kPa or 2.2–2.4 bar). Under-inflated tires reduce fuel efficiency and increase wear.

What is standard atmospheric pressure?

1 atm = 101.325 kPa = 14.696 psi = 760 mmHg = 1013.25 hPa. Weather maps below 1013 hPa indicate low pressure (storms); above indicates high pressure (clear skies).

What does mmHg measure in blood pressure?

mmHg (millimeters of mercury) measures arterial pressure. Normal is under 120/80 mmHg. High blood pressure (hypertension) is 130/80 mmHg or above.