Question 1

What is a megabar?

Accepted Answer

1 Mbar = 1,000,000 bar = 100 GPa. Used for extreme pressure research and astrophysics.

Question 2

What pressures reach megabars?

Accepted Answer

Earth's core: ~3.5 Mbar. Jupiter's core: ~40 Mbar. Neutron star surface: ~10¹⁰ Mbar.

Question 3

What pressure units do different industries use?

Accepted Answer

PSI in US/UK automotive and HVAC. Bar/kPa in European engineering. mmHg/torr in medicine. Atmospheres in diving and altitude.

Question 4

Is gauge pressure different from absolute pressure?

Accepted Answer

Yes! Gauge pressure reads 0 at atmospheric pressure. Absolute pressure adds atmospheric (~14.7 psi). Vacuum gauge shows negative gauge pressure.

Megabar to Bar Pressure Converter - Free Online Tool

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