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Standard atmosphere to Inch of mercury (atm → inHg)

Convert standard atmosphere to inch of mercury instantly. The conversion factor is approximate to engineering precision.

Realtime·pressure·metric
Approx
atm
× 29.9213
inHg
29.9213
Precision [auto]
6

📐atm to inHg formulaApprox.

inHg = atm × 29.921252401895
Inverse: atm = inHg × 0.033421060943

Worked example: 1 atm = 29.921252401895 inHg

ℹ️About these units

Standard atmosphere (atm)
Source: 1 atm = 101 325 Pa exact (BIPM).
Inch of mercury (inHg)
US weather barometric pressure.

📊Reference table: atm → inHg

Standard atmosphere (atm)Inch of mercury (inHg)
129.9213
259.8425
5149.6063
10299.2125
15448.8188
20598.425
25748.0313
501,496.06
1002,992.13
2507,480.31
50014,960.63
75022,440.94
1,00029,921.25

Want a downloadable CSV? Append ?format=csv to the API /api/v1/table endpoint.

🔁Reverse & related

Reverse: inHg → atmatm → baratm → Paatm → kPaatm → MPaatm → hPaatm → mbaratm → psiatm → ksi

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