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Pressure

Millimeters of Mercury → Torr

mmHg → Torr

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Based on U.S. National Institute of Standards

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Millimeters of Mercury to Torr Formula

To convert from Millimeters of Mercury to Torr, you can use the following formula:

Torr = Millimeters of Mercury × NaN

This means you need to multiply your Millimeters of Mercury value by NaN to get the equivalent value in Torr.

mmHg → Torr Reference Table

mmHg Torr
0.001 mmHg 0.001000000142 Torr
0.002 mmHg 0.002000000285 Torr
0.003 mmHg 0.003000000427 Torr
0.004 mmHg 0.00400000057 Torr
0.005 mmHg 0.005000000712 Torr
0.006 mmHg 0.006000000855 Torr
0.007 mmHg 0.007000000997 Torr
0.008 mmHg 0.00800000114 Torr
0.009 mmHg 0.009000001282 Torr
0.01 mmHg 0.01000000142 Torr
0.02 mmHg 0.02000000285 Torr
0.03 mmHg 0.03000000427 Torr
0.04 mmHg 0.0400000057 Torr
0.05 mmHg 0.05000000712 Torr
0.06 mmHg 0.06000000855 Torr
0.07 mmHg 0.07000000997 Torr
0.08 mmHg 0.0800000114 Torr
0.09 mmHg 0.09000001282 Torr
0.1 mmHg 0.1000000142 Torr
0.2 mmHg 0.2000000285 Torr
0.3 mmHg 0.3000000427 Torr
0.4 mmHg 0.400000057 Torr
0.5 mmHg 0.5000000712 Torr
0.6 mmHg 0.6000000855 Torr
0.7 mmHg 0.7000000997 Torr
0.8 mmHg 0.800000114 Torr
0.9 mmHg 0.9000001282 Torr
1 mmHg 1.000000142 Torr
1.5 mmHg 1.500000214 Torr
2 mmHg 2.000000285 Torr
2.5 mmHg 2.500000356 Torr
3 mmHg 3.000000427 Torr
3.5 mmHg 3.500000499 Torr
4 mmHg 4.00000057 Torr
4.5 mmHg 4.500000641 Torr
5 mmHg 5.000000712 Torr
5.5 mmHg 5.500000784 Torr
6 mmHg 6.000000855 Torr
6.5 mmHg 6.500000926 Torr
7 mmHg 7.000000997 Torr
7.5 mmHg 7.500001068 Torr
8 mmHg 8.00000114 Torr
8.5 mmHg 8.500001211 Torr
9 mmHg 9.000001282 Torr
9.5 mmHg 9.500001353 Torr
10 mmHg 10.00000142 Torr
11 mmHg 11.00000157 Torr
12 mmHg 12.00000171 Torr
13 mmHg 13.00000185 Torr
14 mmHg 14.00000199 Torr
15 mmHg 15.00000214 Torr
16 mmHg 16.00000228 Torr
17 mmHg 17.00000242 Torr
18 mmHg 18.00000256 Torr
19 mmHg 19.00000271 Torr
20 mmHg 20.00000285 Torr
25 mmHg 25.00000356 Torr
30 mmHg 30.00000427 Torr
35 mmHg 35.00000499 Torr
40 mmHg 40.0000057 Torr
45 mmHg 45.00000641 Torr
50 mmHg 50.00000712 Torr
55 mmHg 55.00000784 Torr
60 mmHg 60.00000855 Torr
65 mmHg 65.00000926 Torr
70 mmHg 70.00000997 Torr
75 mmHg 75.00001068 Torr
80 mmHg 80.0000114 Torr
85 mmHg 85.00001211 Torr
90 mmHg 90.00001282 Torr
95 mmHg 95.00001353 Torr
100 mmHg 100.0000142 Torr
120 mmHg 120.0000171 Torr
125 mmHg 125.0000178 Torr
130 mmHg 130.0000185 Torr
140 mmHg 140.0000199 Torr
150 mmHg 150.0000214 Torr
160 mmHg 160.0000228 Torr
175 mmHg 175.0000249 Torr
180 mmHg 180.0000256 Torr
200 mmHg 200.0000285 Torr
225 mmHg 225.0000321 Torr
250 mmHg 250.0000356 Torr
275 mmHg 275.0000392 Torr
300 mmHg 300.0000427 Torr
350 mmHg 350.0000499 Torr
400 mmHg 400.000057 Torr
450 mmHg 450.0000641 Torr
500 mmHg 500.0000712 Torr
600 mmHg 600.0000855 Torr
700 mmHg 700.0000997 Torr
750 mmHg 750.0001068 Torr
800 mmHg 800.000114 Torr
900 mmHg 900.0001282 Torr
1000 mmHg 1000.000142 Torr
1200 mmHg 1200.000171 Torr
1250 mmHg 1250.000178 Torr
1500 mmHg 1500.000214 Torr
1750 mmHg 1750.000249 Torr
2000 mmHg 2000.000285 Torr
2500 mmHg 2500.000356 Torr
3000 mmHg 3000.000427 Torr
4000 mmHg 4000.00057 Torr
4500 mmHg 4500.000641 Torr
5000 mmHg 5000.000712 Torr
6000 mmHg 6000.000855 Torr
7000 mmHg 7000.000997 Torr
7500 mmHg 7500.001068 Torr
8000 mmHg 8000.00114 Torr
9000 mmHg 9000.001282 Torr
10000 mmHg 10000.00142 Torr
15000 mmHg 15000.00214 Torr
20000 mmHg 20000.00285 Torr
25000 mmHg 25000.00356 Torr
50000 mmHg 50000.00712 Torr
75000 mmHg 75000.01068 Torr
100000 mmHg 100000.0142 Torr

Why Convert Millimeters of Mercury to Torr?

Converting between millimeters of mercury (mmHg) and torr (Torr) is one of the most common pressure conversions. Whether for engineering, cooking, travel, or science, knowing how to quickly convert mmHg to Torr saves time and prevents errors.

Pressure conversions between mmHg and Torr are vital in automotive maintenance, meteorology, and scuba diving. Tire pressure affects fuel efficiency and safety, requiring drivers to convert between PSI and bar depending on the gauge used. Divers must strictly monitor pressure to avoid decompression sickness, often needing to convert depth and tank pressure readings. In weather forecasting, atmospheric pressure changes indicate approaching storms, with data often shared in different units globally. Failing to convert pressure accurately can lead to equipment failure, tire blowouts, or life-threatening situations underwater.

How to Convert Millimeters of Mercury to Torr

To convert millimeters of mercury to torr, use the following formula:

Torr = mmHg × 1.000000142

Example: 1 mmHg = 1.000000142 Torr

For example, 5 mmHg = 5.000000712 Torr, 10 mmHg = 10.00000142 Torr, and 100 mmHg = 100.0000142 Torr. For larger values, 1000 mmHg = 1000.000142 Torr. Conversely, 1 Torr = 0.9999998575 mmHg. Our calculator above performs this conversion instantly with full precision — no rounding errors.

Common Mistakes to Avoid

  • Gauge vs Absolute: confusing gauge pressure (psig) with absolute pressure (psia).
  • Bar vs Pascal: 1 Bar is 100,000 Pascals, not 10 or 100.
  • Atmosphere variations: confusing standard atm with technical atm.

Pro Tips

  • Tire checks: Check tire pressure when cold (tires heat up and pressure rises while driving).
  • PSI rule: Typical car tires are 30-35 PSI.
  • Altitude effect: Air pressure drops as you go higher (ears popping).

What is a Millimeter of Mercury?

Millimeter of mercury.

Blood pressure and vacuum systems.

What is a Torr?

A unit of pressure measuring 1/760 of an atmosphere.

High-vacuum physics.

Frequently Asked Questions

Pressure More Conversions

bar → psipsi → baratm → PaPa → atmbar → atmatm → bar

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