Pressure Converter

What is the Pressure Converter?

Convert any pressure unit to all others at once — Pa, kPa, bar, psi, atm, mmHg. Pressure is measured in pascals, bar, psi and millimeters of mercury depending on the field, from tires to weather to medicine.

How to use the Pressure Converter

1. Enter your value, your from unit.
2. Results update automatically as you type; you can also press Calculate.
3. Read the output: pascal (pa), kilopascal (kpa), bar (bar), psi (psi).
4. Check the chart to see how the conversion scales.

Formula and method

Worked example

With value = 1, from unit = Pascal (Pa), the Pressure Converter returns pascal (pa): 1 Pa; kilopascal (kpa): 0.001 kPa; bar (bar): 0.00001 bar.

When an all-in-one pressure converter helps

Your car manual lists tire pressure as 2.3 bar and the gas station gauge reads psi. Converting gives about 33 psi, so you can inflate the tires correctly.

A weather report gives pressure in hectopascals and your wall barometer reads inches of mercury. Converting 1013 hPa gives about 29.92 inHg, standard sea-level pressure.

Watch out for these mix-ups

• Reading a tire gauge’s psi as absolute pressure, when it shows pressure above the atmosphere.
• Confusing kilopascals with hectopascals.
• Inflating tires to the maximum pressure printed on the sidewall.
• Rounding blood-pressure readings in mmHg.

Tips for better results

• Check tire pressure when tires are cold.
• Use the same units consistently.
• Read gauges carefully.

💡 Practical tip: Tire pressure should be checked cold, before driving, for accurate readings.

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