Convert millimeter water (4°C) to ton-force (long)/square foot
Please provide values below to convert millimeter water (4°C) [mmH2O] to ton-force (long)/square foot [tonf (UK)/ft^2], or Convert ton-force (long)/square foot to millimeter water (4°C).
How to Convert Millimeter Water (4°c) to Ton-Force (Long)/square Foot
1 mmH2O = 9.14332609757775e-05 tonf (UK)/ft^2
Example: convert 15 mmH2O to tonf (UK)/ft^2:
15 mmH2O = 15 × 9.14332609757775e-05 tonf (UK)/ft^2 = 0.00137149891463666 tonf (UK)/ft^2
Millimeter Water (4°c) to Ton-Force (Long)/square Foot Conversion Table
| millimeter water (4°C) | ton-force (long)/square foot |
|---|
Millimeter Water (4°c)
Millimeter water (4°C) is a unit of pressure measuring the height of a water column at 4 degrees Celsius that exerts a specific pressure.
History/Origin
The unit originated from the use of water columns to measure pressure, particularly in hydrology and medical applications, with standardization based on the density of water at 4°C.
Current Use
It is primarily used in medical and scientific contexts to measure low pressures, such as intracranial pressure, respiratory pressures, and in calibration of pressure sensors.
Ton-Force (Long)/square Foot
Ton-force (long) per square foot is a unit of pressure representing the force exerted by one long ton (2,240 pounds) distributed over one square foot.
History/Origin
This unit originated in the UK as a practical measure for engineering and industrial applications, combining the long ton (used primarily in the UK) with square foot to measure pressure in contexts such as structural and mechanical engineering.
Current Use
Today, ton-force per square foot is rarely used in modern engineering, having been largely replaced by SI units like pascals. It may still appear in historical data, specialized fields, or regional contexts within the UK.