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To convert from torr (torr) to meter of water @ 4°C (mH2O), use the following formula:
meter of water @ 4°C (mH2O)
= 101325760000 × 19.80665× torr (torr)
= 0.013595098063156391997× torr (torr)
Let's convert 5 torr (torr) to meter of water @ 4°C (mH2O).
Using the formula:
5 × 0.013595098063156391997 = 0.067975490315781959985
Therefore, 5 torr (torr) is equal to 0.067975490315781959985 meter of water @ 4°C (mH2O).
How many torr are in one meter of water @ 4°c? One meter of water @ 4°C (mH2O) contains 73.555924006908462867 torr (torr) — the inverse of the factor above. Multiplying by 0.013595098063156391997 takes you from torr to meters of water @ 4°c; multiplying by 73.555924006908462867 brings you back.
Put in words: one torr equals 0.013595098063156391997 meters of water @ 4°c, so the torr is the smaller unit of this pair. Converting between them never changes the amount of pressure being measured — only the size of the unit you count it in.
A torr (Torr) is a unit of pressure.
It is primarily used to measure a vacuum, or pressures much lower than the air pressure we experience every day.
While the modern standard (SI) unit for pressure is the pascal (Pa), the torr is still widely used in many scientific and engineering fields.
For conversion, one torr is equal to about 133.32 pascals.
A much simpler way to think about it is in relation to our atmosphere: one standard atmosphere (atm) is defined as exactly 760 Torr.
The unit is named in honor of Evangelista Torricelli, the 17th-century Italian physicist who invented the mercury barometer.
Because of this, one torr was initially defined as being equal to one millimeter of mercury (mmHg).
This means 1 Torr is the pressure exerted by a column of mercury that is one millimeter high.
As mentioned, the torr's most convenient relationship is with the standard atmosphere (atm).
One standard atmosphere—the average air pressure at sea level—is set at exactly 760 Torr.
This straightforward, whole-number conversion makes the torr a popular choice for anyone working with fractions of atmospheric pressure.
The torr is the primary unit of measurement for high-vacuum and ultra-high-vacuum technology.
Because it is such a small unit (it takes 760 of them to equal one atmosphere), it is ideal for quantifying pressures far below normal air pressure.
You will find the torr used in many advanced scientific and industrial fields, including:
A meter of water @ 4°C (mH2O) is a metric unit used to measure pressure.
It is precisely defined as 9.80665 kilopascals (kPa).
The specific temperature of 4°C (39.2°F) is key because this is the point where pure water is at its heaviest or most dense (approximately 999.972 kg/m3).
Using this temperature provides a stable and reliable standard for defining pressure.
This precision is essential in scientific and engineering fields like hydraulics and fluid mechanics, ensuring that measurements of pressure head are consistent and accurate across different applications and locations.
The unit "meter of water" (mH2O) is frequently used in civil engineering, hydrology, and irrigation to measure water levels and pressure.
It provides an intuitive way to express the pressure exerted by a column of water, such as the water level in a reservoir, dam, or groundwater well. This measurement is sometimes referred to as the 'piezometric head'.
It is also commonly used to specify the performance of pumps, indicating the height to which a pump can lift water.
For practical use, it's often helpful to know how mH2O converts to other common pressure units.
One mH2O is equal to:
These conversion factors allow engineers and scientists to easily translate pressure specifications between different international and imperial systems.
Here are some quick reference conversions from torr (torr) to meter of water @ 4°C (mH2O):
| torr | meters of water @ 4°C |
|---|---|
| 0.000001 torr | 1.3595098063156391997× 10-8 mH2O |
| 0.001 torr | 0.000013595098063156391997 mH2O |
| 0.1 torr | 0.0013595098063156391997 mH2O |
| 1 torr | 0.013595098063156391997 mH2O |
| 2 torr | 0.027190196126312783994 mH2O |
| 3 torr | 0.040785294189469175991 mH2O |
| 4 torr | 0.054380392252625567988 mH2O |
| 5 torr | 0.067975490315781959985 mH2O |
| 6 torr | 0.081570588378938351982 mH2O |
| 7 torr | 0.095165686442094743979 mH2O |
| 8 torr | 0.10876078450525113598 mH2O |
| 9 torr | 0.12235588256840752797 mH2O |
| 10 torr | 0.13595098063156391997 mH2O |
| 20 torr | 0.27190196126312783994 mH2O |
| 30 torr | 0.40785294189469175991 mH2O |
| 40 torr | 0.54380392252625567988 mH2O |
| 50 torr | 0.67975490315781959985 mH2O |
| 100 torr | 1.3595098063156391997 mH2O |
| 1000 torr | 13.595098063156391997 mH2O |
| 10000 torr | 135.95098063156391997 mH2O |
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