Question 1

How many kPa in 1 atm?

Accepted Answer

1 atm = 101.325 kPa. Easy approximation: 100 kPa ≈ 1 atm. Used in most of the world except US.

Question 2

What is normal tire pressure in kPa?

Accepted Answer

Cars: 200-250 kPa (30-36 PSI). Bicycles: 500-800 kPa. Heavy trucks: 700-800 kPa.

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.

Kilopascal to Atmospheres Converter

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