Convert inch of mercury to standard atmosphere

Here you can quickly calculate how many standard atmosphere fit in one inch of mercury.

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Example: inch of mercury to standard atmosphere

Starting value Increment Accuracy

To convert inch of mercury to standard atmosphere, multiply by 0.033421.

1 inHg = 0.033421 atm

Example: 1 inch of mercury = 0.033421 standard atmosphere

One atmosphere is not exactly one bar: 1 atm = 1.01325 bar = 101.325 kPa. There is also the technical atmosphere (1 kgf/cm²) at about 0.981 bar. The ~1% differences rarely matter day to day, but engineering and diving calculations need the right unit.

Score: 0

3.1 standard atmosphere equals 139 inch of mercury.

Correct answer: 3.1 standard atmosphere = 92.8 inch of mercury.

24.3 inch of mercury equals 0.812 standard atmosphere.

Correct answer: 24.3 inch of mercury = 0.812 standard atmosphere.

213 standard atmosphere equals 3.19e+3 inch of mercury.

Correct answer: 213 standard atmosphere = 6.37e+3 inch of mercury.

226 standard atmosphere equals 4.06e+3 inch of mercury.

Correct answer: 226 standard atmosphere = 6.76e+3 inch of mercury.

173 standard atmosphere equals 5.18e+3 inch of mercury.

Correct answer: 173 standard atmosphere = 5.18e+3 inch of mercury.