Torr to inHg Converter
Pressure · unit-converter
Convert Torr to inHg with a fixed input and output unit, step-by-step formula line, and reference tables. All calculations bridge through pascal with fixed definitions (standard atmosphere = 101,325 Pa; torr and mmHg = atm/760; plus industrial/manometer units like kgf/cm², inHg, inH2O, and mmH2O).
About Torr
The torr is defined as 1/760 of a standard atmosphere (≈133.32236842105263 Pa). It is widely used in vacuum science alongside pascal.
About inHg
Inches of mercury (inHg) is used in aviation altimetry and vacuum readings in some US contexts.
How to convert torr to inch of mercury (inhg)
1 torr equals 0.03937007874021255 inhg in this tool (via pascal):
1 torr = (133.32236842105263 Pa ÷ 3386.38815789 Pa) inhg = 0.03937007874021255 inhg
Each torr carries 133.32236842105263 Pa and each inhg 3386.38815789 Pa, so one torr equals 133.32236842105263 ÷ 3386.38815789 inhg.
Let p(torr) be pressure in Torr (torr), and p(inhg) in inHg (inhg). Then:
p(inhg) = p(torr) × (133.32236842105263 / 3386.38815789)
Equivalently, divide by how many torr fit into one inhg (Pa per inhg divided by Pa per torr):
p(inhg) = p(torr) ÷ 25.39999999996447
Examples
Example #1: Convert 1 torr to inhg
1 torr = 1 torr × (133.32236842105263/3386.38815789) inhg = 0.0393700787 inhg
1 torr = 1 torr ÷ 25.39999999996447 = 0.0393700787 inhg
1 torr × (133.32236842105263/3,386.38815789) = 0.039370 inhg
Example #2: Convert 10 torr to inhg
10 torr = 10 torr × (133.32236842105263/3386.38815789) inhg = 0.3937007874 inhg
10 torr = 10 torr ÷ 25.39999999996447 = 0.3937007874 inhg
10 torr × (133.32236842105263/3,386.38815789) = 0.393701 inhg
Summary
To convert Torr to inHg, multiply the value in torr by (133.32236842105263 Pa per torr) / (3386.38815789 Pa per inhg). Equivalently: value_inhg = value_torr × (133.32236842105263 / 3386.38815789). Numerically, 1 torr equals 0.03937007874021255 inhg.
Relationship context
Both Torr and inHg are converted by fixed multiples of the pascal. Multiplying by (Pa per torr) ÷ (Pa per inhg) gives the same result as passing through pascal, keeping bar, atm, PSI, kPa, hPa, torr, and mmHg consistent on the hub.
Conversion tables
| Torr (torr) | inHg (inhg) |
|---|---|
| 0.1 | 0.0039370079 |
| 1 | 0.0393700787 |
| 2 | 0.0787401575 |
| 3 | 0.1181102362 |
| 4 | 0.157480315 |
| 5 | 0.1968503937 |
| 6 | 0.2362204724 |
| 7 | 0.2755905512 |
| 8 | 0.3149606299 |
| 9 | 0.3543307087 |
| Torr (torr) | inHg (inhg) |
|---|---|
| 10 | 0.3937007874 |
| 20 | 0.7874015748 |
| 30 | 1.1811023622 |
| 40 | 1.5748031496 |
| 50 | 1.968503937 |
| 60 | 2.3622047244 |
| 70 | 2.7559055118 |
| 80 | 3.1496062992 |
| 90 | 3.5433070866 |
| 100 | 3.937007874 |