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Convert Inches of Mercury to Pounds Per Square Inch

1 inch of mercury = 0.4911542 pounds per square inch. Type any value below to convert in either direction — the calculation happens in your browser.

Inches of Mercury to Pounds Per Square Inch formula

Multiply the number of inches of mercury by 0.4911542 to get pounds per square inch.

pounds per square inch = inches of mercury × 0.4911542

To go the other way: divide the number of pounds per square inch by 0.4911542, or multiply by 2.03602.

inches of mercury = pounds per square inch ÷ 0.4911542

Inches of Mercury to Pounds Per Square Inch conversion table

Inches of MercuryPounds Per Square Inch
1 inHg0.4911542 psi
2 inHg0.9823084 psi
3 inHg1.473463 psi
4 inHg1.964617 psi
5 inHg2.455771 psi
6 inHg2.946925 psi
7 inHg3.438079 psi
8 inHg3.929234 psi
9 inHg4.420388 psi
10 inHg4.911542 psi
15 inHg7.367313 psi
20 inHg9.823084 psi
25 inHg12.278855 psi
30 inHg14.734626 psi
40 inHg19.646168 psi
50 inHg24.55771 psi
75 inHg36.836565 psi
100 inHg49.11542 psi
250 inHg122.78855 psi
500 inHg245.5771 psi
1,000 inHg491.1542 psi

Pounds Per Square Inch to Inches of Mercury conversion table

Pounds Per Square InchInches of Mercury
1 psi2.03602 inHg
2 psi4.072041 inHg
3 psi6.108061 inHg
4 psi8.144082 inHg
5 psi10.180102 inHg
6 psi12.216123 inHg
7 psi14.252143 inHg
8 psi16.288164 inHg
9 psi18.324184 inHg
10 psi20.360205 inHg

About the inch of mercury

Inches of mercury are used in US aviation altimeter settings and barometric reports.

About the pound per square inch

Pounds per square inch is the pressure unit of US tyre gauges, compressors and hydraulics.

Frequently asked questions

How many pounds per square inch are in a inch of mercury?

There are 0.4911542 pounds per square inch in one inch of mercury.

How many inches of mercury are in a pound per square inch?

There are 2.03602 inches of mercury in one pound per square inch.

Is this conversion exact?

The ratio between the inch of mercury and the pound per square inch is fixed by definition, so the conversion is exact — the figures shown here are rounded for readability only.

What is 10 inches of mercury in pounds per square inch?

10 inches of mercury equals 4.911542 pounds per square inch.

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