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Pressure

psitoinHg

Convert pounds-force per square inch (psi) to inches of mercury (0 °C) (inHg).

Factor1 psi = 2.03602 inHg

Converter

psi

Accepts numbers or expressions, e.g. 150 + 14.7

Result
29.9212inHg

Rendered to 6 significant figures.

Formula

Formula
inHg = psi × 2.03602

Multiply any value in pounds-force per square inch by 2.03602 to obtain the value in inches of mercury (0 °C).

Worked example

Convert 14.6959 psi to inHg.

  1. 01Start with 14.6959 psi.
  2. 02Multiply by the conversion factor: 14.6959 × 2.03602 = 29.9212 inHg.
Result14.6959 psi = 29.9212 inHg

Conversion table

psiinHg
12.036
24.072
510.18
1020.36
2040.72
50101.8
100203.6
200407.2
5001018
10002036

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from psi to inHg?
1 psi equals 2.03602 inHg. To convert, multiply the value in pounds-force per square inch by 2.03602.
How do I convert 1 psi to inHg?
1 psi = 2.03602 inHg. For any value, multiply by 2.03602.
How do I convert inHg back to psi?
Divide by the same factor — or equivalently, multiply by 0.4911542. So 1 inHg = 0.491154 psi.
When would I need to convert pound-force per square inch to inch of mercury (0 °C)?
Pressure conversions between psi and inHg are common when working with mixed-vendor instrumentation, when piping codes use different units to process datasheets, or when converting field readings into SI for hydraulic calculations.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).

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