Torr to inH2O Converter
Pressure · unit-converter
Convert Torr to inH2O 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 inH2O
Inches of water column (inH2O) is common in low-pressure HVAC and duct static-pressure measurements.
How to convert torr to inch of water (inh2o, 4 °c)
1 torr equals 0.5352400812266296 inh2o in this tool (via pascal):
1 torr = (133.32236842105263 Pa ÷ 249.08891 Pa) inh2o = 0.5352400812266296 inh2o
Each torr carries 133.32236842105263 Pa and each inh2o 249.08891 Pa, so one torr equals 133.32236842105263 ÷ 249.08891 inh2o.
Let p(torr) be pressure in Torr (torr), and p(inh2o) in inH2O (inh2o). Then:
p(inh2o) = p(torr) × (133.32236842105263 / 249.08891)
Equivalently, divide by how many torr fit into one inh2o (Pa per inh2o divided by Pa per torr):
p(inh2o) = p(torr) ÷ 1.868320469775475
Examples
Example #1: Convert 1 torr to inh2o
1 torr = 1 torr × (133.32236842105263/249.08891) inh2o = 0.5352400812 inh2o
1 torr = 1 torr ÷ 1.868320469775475 = 0.5352400812 inh2o
1 torr × (133.32236842105263/249.08891) = 0.535240 inh2o
Example #2: Convert 10 torr to inh2o
10 torr = 10 torr × (133.32236842105263/249.08891) inh2o = 5.3524008123 inh2o
10 torr = 10 torr ÷ 1.868320469775475 = 5.3524008123 inh2o
10 torr × (133.32236842105263/249.08891) = 5.352401 inh2o
Summary
To convert Torr to inH2O, multiply the value in torr by (133.32236842105263 Pa per torr) / (249.08891 Pa per inh2o). Equivalently: value_inh2o = value_torr × (133.32236842105263 / 249.08891). Numerically, 1 torr equals 0.5352400812266296 inh2o.
Relationship context
Both Torr and inH2O are converted by fixed multiples of the pascal. Multiplying by (Pa per torr) ÷ (Pa per inh2o) 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) | inH2O (inh2o) |
|---|---|
| 0.1 | 0.0535240081 |
| 1 | 0.5352400812 |
| 2 | 1.0704801624 |
| 3 | 1.6057202437 |
| 4 | 2.1409603249 |
| 5 | 2.6762004061 |
| 6 | 3.2114404874 |
| 7 | 3.7466805686 |
| 8 | 4.2819206498 |
| 9 | 4.817160731 |
| Torr (torr) | inH2O (inh2o) |
|---|---|
| 10 | 5.3524008123 |
| 20 | 10.7048016245 |
| 30 | 16.0572024368 |
| 40 | 21.4096032491 |
| 50 | 26.7620040613 |
| 60 | 32.1144048736 |
| 70 | 37.4668056859 |
| 80 | 42.8192064981 |
| 90 | 48.1716073104 |
| 100 | 53.5240081227 |