Question 1

How many atm in 1 MPa?

Accepted Answer

1 MPa = 9.87 atm ≈ 10 atmospheres. 100 MPa ≈ 1000 atm. MPa is common in engineering.

Question 2

What is 1 MPa in everyday terms?

Accepted Answer

1 MPa ≈ 10 atm = 145 PSI. About 3× car tire pressure. High pressure washing uses 10-20 MPa.

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.

Megapascal to Atmospheres Converter

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