How do I convert pounds per square inch to inches of mercury?

Multiply the pound per square inch value by 2.03602. So x psi × 2.03602 = the equivalent in inHg.

What is 5 pounds per square inch in inches of mercury?

5 pounds per square inch equals 10.1801 inches of mercury.

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

10 pounds per square inch equals 20.3602 inches of mercury.

What is 100 pounds per square inch in inches of mercury?

100 pounds per square inch equals 203.602 inches of mercury.

How do I convert back from inches of mercury to pounds per square inch?

Multiply the inch of mercury value by 0.491154. For example, 1 inHg = 0.491154 psi.

Is the pound per square inch bigger than the inch of mercury?

Yes. 1 pound per square inch is larger than 1 inch of mercury — specifically 2.03602 times larger.

Are these conversion factors exact?

The factor is derived directly from the SI definitions of pound per square inch and inch of mercury; the displayed value is rounded for readability, and the browser computes using IEEE 754 double-precision arithmetic.

Pounds per square inch to Inches of mercury

1 psi = 2.03602 inHg (pound per square inch → inch of mercury)

1 psi = 2.03602 inHg

1 pound per square inch equals 2.03602 inches of mercury. To convert pounds per square inch to inches of mercury, multiply the pound per square inch value by 2.03602. For quick reference: 1 psi = 2.03602 inHg, 5 psi = 10.1801 inHg, 10 psi = 20.3602 inHg, 100 psi = 203.602 inHg.

From

2.03602

FormulaInches of mercury = Pounds per square inch × 2.03602

Quick

How to convert pounds per square inch to inches of mercury

Take your value
Start with your value in pounds per square inch.
Multiply by 2.03602
Multiply the pound per square inch value by 2.03602. This is the exact conversion factor from pounds per square inch to inches of mercury.
Read the result
The product is your value in inches of mercury. For example, 5 psi × 2.03602 = 10.1801 inHg.

Conversion formula

The exact factor from pounds per square inch to inches of mercury is 2.03602.

Inches of mercury = Pounds per square inch × 2.03602

Pounds per square inch to Inches of mercury conversion table

Fifty common reference values, hand-picked for skim utility. Use the calculator above for any value not listed.

Conversion table from pounds per square inch to inches of mercury
Pounds per square inch (psi)	Inches of mercury (inHg)
0.001 psi	0.002036 inHg
0.01 psi	0.02036 inHg
0.1 psi	0.2036 inHg
0.5 psi	1.018 inHg
1 psi	2.036 inHg
1.5 psi	3.054 inHg
2 psi	4.072 inHg
2.5 psi	5.0901 inHg
3 psi	6.1081 inHg
4 psi	8.1441 inHg
5 psi	10.18 inHg
6 psi	12.216 inHg
7 psi	14.252 inHg
8 psi	16.288 inHg
9 psi	18.324 inHg
10 psi	20.36 inHg
14 psi	28.504 inHg
15 psi	30.54 inHg
20 psi	40.72 inHg
25 psi	50.901 inHg
30 psi	61.081 inHg
32 psi	65.153 inHg
35 psi	71.261 inHg
40 psi	81.441 inHg
50 psi	101.8 inHg
60 psi	122.16 inHg
75 psi	152.7 inHg
80 psi	162.88 inHg
100 psi	203.6 inHg
101.325 psi	206.3 inHg
150 psi	305.4 inHg
200 psi	407.2 inHg
250 psi	509.01 inHg
300 psi	610.81 inHg
400 psi	814.41 inHg
500 psi	1018 inHg
760 psi	1547.4 inHg
1000 psi	2036 inHg
1013.25 psi	2063 inHg
2000 psi	4072 inHg
5000 psi	10180 inHg
10000 psi	20360 inHg
14.7 psi	29.93 inHg
50000 psi	101801 inHg
100000 psi	203602 inHg
101325 psi	206300 inHg
200000 psi	407204 inHg
500000 psi	1018010 inHg
1000000 psi	2036020 inHg
10000000 psi	20360205 inHg

Real-world reference

Most US passenger-car tires call for 32–35 psi. A typical bicycle tire runs 50–80 psi. In inches of mercury, that gives you: 1 psi = 2.03602 inHg, 10 psi = 20.3602 inHg, 100 psi = 203.602 inHg.

Frequently asked questions

How many inches of mercury are in 1 pound per square inch?: 1 pound per square inch equals 2.03602 inches of mercury.
How do I convert pounds per square inch to inches of mercury?: Multiply the pound per square inch value by 2.03602. So x psi × 2.03602 = the equivalent in inHg.
What is 5 pounds per square inch in inches of mercury?: 5 pounds per square inch equals 10.1801 inches of mercury.
What is 10 pounds per square inch in inches of mercury?: 10 pounds per square inch equals 20.3602 inches of mercury.
What is 100 pounds per square inch in inches of mercury?: 100 pounds per square inch equals 203.602 inches of mercury.
How do I convert back from inches of mercury to pounds per square inch?: Multiply the inch of mercury value by 0.491154. For example, 1 inHg = 0.491154 psi.
Is the pound per square inch bigger than the inch of mercury?: Yes. 1 pound per square inch is larger than 1 inch of mercury — specifically 2.03602 times larger.
Are these conversion factors exact?: The factor is derived directly from the SI definitions of pound per square inch and inch of mercury; the displayed value is rounded for readability, and the browser computes using IEEE 754 double-precision arithmetic.

About the pound per square inch and the inch of mercury

The pound per square inch

The pound per square inch (psi) is the customary US pressure unit, derived from the avoirdupois pound-force on a square inch (≈ 6,894.76 Pa exactly). It is the standard unit on US car tire-pressure stickers, scuba gauges in the US, and most plumbing specifications.

The inch of mercury

The inch of mercury (inHg) equals 3,386.389 Pa under the NIST SP 811 conventional definition. It is the standard unit for barometric pressure on US weather reports and for altimeter settings in US aviation.

Inches of mercury to Pounds per square inch

inHg → psi

Kilopascals to Centimeters of water

kPa → cmH₂O

Pascals to Kilopascals

Pa → kPa

Pascals to Bars

Pa → bar

Pascals to Standard atmospheres

Pa → atm

Pascals to Pounds per square inch

Pa → psi