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Pressure

Torr → Millimeters of Mercury

Torr → mmHg

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Based on U.S. National Institute of Standards

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Torr to Millimeters of Mercury Formula

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

Millimeters of Mercury = Torr × NaN

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

Torr → mmHg Reference Table

Torr mmHg
0.001 Torr 0.0009999998575 mmHg
0.002 Torr 0.001999999715 mmHg
0.003 Torr 0.002999999573 mmHg
0.004 Torr 0.00399999943 mmHg
0.005 Torr 0.004999999288 mmHg
0.006 Torr 0.005999999145 mmHg
0.007 Torr 0.006999999003 mmHg
0.008 Torr 0.00799999886 mmHg
0.009 Torr 0.008999998718 mmHg
0.01 Torr 0.009999998575 mmHg
0.02 Torr 0.01999999715 mmHg
0.03 Torr 0.02999999573 mmHg
0.04 Torr 0.0399999943 mmHg
0.05 Torr 0.04999999288 mmHg
0.06 Torr 0.05999999145 mmHg
0.07 Torr 0.06999999003 mmHg
0.08 Torr 0.0799999886 mmHg
0.09 Torr 0.08999998718 mmHg
0.1 Torr 0.09999998575 mmHg
0.2 Torr 0.1999999715 mmHg
0.3 Torr 0.2999999573 mmHg
0.4 Torr 0.399999943 mmHg
0.5 Torr 0.4999999288 mmHg
0.6 Torr 0.5999999145 mmHg
0.7 Torr 0.6999999003 mmHg
0.8 Torr 0.799999886 mmHg
0.9 Torr 0.8999998718 mmHg
1 Torr 0.9999998575 mmHg
1.5 Torr 1.499999786 mmHg
2 Torr 1.999999715 mmHg
2.5 Torr 2.499999644 mmHg
3 Torr 2.999999573 mmHg
3.5 Torr 3.499999501 mmHg
4 Torr 3.99999943 mmHg
4.5 Torr 4.499999359 mmHg
5 Torr 4.999999288 mmHg
5.5 Torr 5.499999216 mmHg
6 Torr 5.999999145 mmHg
6.5 Torr 6.499999074 mmHg
7 Torr 6.999999003 mmHg
7.5 Torr 7.499998932 mmHg
8 Torr 7.99999886 mmHg
8.5 Torr 8.499998789 mmHg
9 Torr 8.999998718 mmHg
9.5 Torr 9.499998647 mmHg
10 Torr 9.999998575 mmHg
11 Torr 10.99999843 mmHg
12 Torr 11.99999829 mmHg
13 Torr 12.99999815 mmHg
14 Torr 13.99999801 mmHg
15 Torr 14.99999786 mmHg
16 Torr 15.99999772 mmHg
17 Torr 16.99999758 mmHg
18 Torr 17.99999744 mmHg
19 Torr 18.99999729 mmHg
20 Torr 19.99999715 mmHg
25 Torr 24.99999644 mmHg
30 Torr 29.99999573 mmHg
35 Torr 34.99999501 mmHg
40 Torr 39.9999943 mmHg
45 Torr 44.99999359 mmHg
50 Torr 49.99999288 mmHg
55 Torr 54.99999216 mmHg
60 Torr 59.99999145 mmHg
65 Torr 64.99999074 mmHg
70 Torr 69.99999003 mmHg
75 Torr 74.99998932 mmHg
80 Torr 79.9999886 mmHg
85 Torr 84.99998789 mmHg
90 Torr 89.99998718 mmHg
95 Torr 94.99998647 mmHg
100 Torr 99.99998575 mmHg
120 Torr 119.9999829 mmHg
125 Torr 124.9999822 mmHg
130 Torr 129.9999815 mmHg
140 Torr 139.9999801 mmHg
150 Torr 149.9999786 mmHg
160 Torr 159.9999772 mmHg
175 Torr 174.9999751 mmHg
180 Torr 179.9999744 mmHg
200 Torr 199.9999715 mmHg
225 Torr 224.9999679 mmHg
250 Torr 249.9999644 mmHg
275 Torr 274.9999608 mmHg
300 Torr 299.9999573 mmHg
350 Torr 349.9999501 mmHg
400 Torr 399.999943 mmHg
450 Torr 449.9999359 mmHg
500 Torr 499.9999288 mmHg
600 Torr 599.9999145 mmHg
700 Torr 699.9999003 mmHg
750 Torr 749.9998932 mmHg
800 Torr 799.999886 mmHg
900 Torr 899.9998718 mmHg
1000 Torr 999.9998575 mmHg
1200 Torr 1199.999829 mmHg
1250 Torr 1249.999822 mmHg
1500 Torr 1499.999786 mmHg
1750 Torr 1749.999751 mmHg
2000 Torr 1999.999715 mmHg
2500 Torr 2499.999644 mmHg
3000 Torr 2999.999573 mmHg
4000 Torr 3999.99943 mmHg
4500 Torr 4499.999359 mmHg
5000 Torr 4999.999288 mmHg
6000 Torr 5999.999145 mmHg
7000 Torr 6999.999003 mmHg
7500 Torr 7499.998932 mmHg
8000 Torr 7999.99886 mmHg
9000 Torr 8999.998718 mmHg
10000 Torr 9999.998575 mmHg
15000 Torr 14999.99786 mmHg
20000 Torr 19999.99715 mmHg
25000 Torr 24999.99644 mmHg
50000 Torr 49999.99288 mmHg
75000 Torr 74999.98932 mmHg
100000 Torr 99999.98575 mmHg

Why Convert Torr to Millimeters of Mercury?

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

Pressure conversions between Torr and mmHg 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 Torr to Millimeters of Mercury

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

mmHg = Torr × 0.9999998575

Example: 1 Torr = 0.9999998575 mmHg

For example, 5 Torr = 4.999999288 mmHg, 10 Torr = 9.999998575 mmHg, and 100 Torr = 99.99998575 mmHg. For larger values, 1000 Torr = 999.9998575 mmHg. Conversely, 1 mmHg = 1.000000142 Torr. 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 Torr?

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

High-vacuum physics.

What is a Millimeter of Mercury?

Millimeter of mercury.

Blood pressure and vacuum systems.

Frequently Asked Questions

Pressure More Conversions

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

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