What does foot water (4°C) measure?

It measures pressure exerted by a 1-foot column of water at 4°C and is used to express low pressures or hydraulic head.

Why convert to standard atmosphere?

Converting to standard atmosphere helps compare water column pressures to common atmospheric and gas-phase pressures in various fields.

Is this conversion accurate for all water temperatures?

No, it specifically relies on water at 4°C since that is the reference density used for this pressure unit.

Convert Foot Water (4°C) [ftAq] to Standard Atmosphere [atm] Easily

Use this online unit converter to change pressure values from foot water (4°C) to standard atmosphere (atm). Understand the definitions, applications, and conversion process for accurate results.

Foot water (4°C) [ftAq]

Standard atmosphere [atm]

Please check your input. It must be a valid numeric value.

Foot water (4°C) [ftAq] to Standard atmosphere [atm] Conversion Table

Foot water (4°C) [ftAq]	Standard atmosphere [atm]

Custom Unit Conversion Table Generator – Instant Printable Conversion Tables

Start Value

Enter the starting number (positive decimal or integer ≥ 0). Example: 0.1, 1, 5.

End Value

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Foot water (4°C) [ftAq] to Standard atmosphere [atm] Conversion Table
Foot water (4°C) [ftAq]	Standard atmosphere [atm]

Explore More Pressure Units Converter

What Is This Tool?

This converter allows you to transform pressure values measured in foot water (4°C) into the standard atmosphere unit. It is ideal for applications involving hydraulic head, fluid pressures, and atmospheric pressure comparisons.

How to Use This Tool?

Enter the pressure value in foot water (4°C) you wish to convert
Select foot water (4°C) as the input unit and standard atmosphere (atm) as the output unit
Click the convert button to get the equivalent pressure in standard atmosphere
Review conversion examples to verify your results

Key Features

Converts foot water (4°C) pressure units to standard atmosphere (atm) units accurately
Browser-based and easy-to-use interface requiring minimal input
Supports conversions useful in hydraulics, environmental engineering, chemistry, and diving
Provides clear definitions and examples for better understanding

Examples

5 Foot water (4°C) equals approximately 0.1475 standard atmosphere
10 Foot water (4°C) equals approximately 0.2950 standard atmosphere

Common Use Cases

Specifying hydraulic head and low pressures in pump and water-distribution systems
Interpreting manometer or gauge pressure readings in labs and HVAC setups
Expressing static head or depth-pressure relationships in groundwater studies
Reporting ambient pressures and partial pressures in chemical thermodynamics and physical chemistry
Describing pressure conditions in diving and engineering applications

Tips & Best Practices

Ensure the water temperature is approximately 4°C for the foot water unit accuracy
Use this conversion for static fluid pressure conditions to get reliable results
Apply standard atmosphere conversions for consistent pressure comparisons in scientific contexts
Verify results using example conversions to reduce input errors

Limitations

Conversion assumes water at exactly 4°C and may be inaccurate for other temperatures or fluids
Standard atmosphere provides a fixed reference which may not reflect local or changing pressures
Hydrostatic pressure units are valid primarily under static conditions, limiting dynamic flow uses

Frequently Asked Questions

What does foot water (4°C) measure?: It measures pressure exerted by a 1-foot column of water at 4°C and is used to express low pressures or hydraulic head.
Why convert to standard atmosphere?: Converting to standard atmosphere helps compare water column pressures to common atmospheric and gas-phase pressures in various fields.
Is this conversion accurate for all water temperatures?: No, it specifically relies on water at 4°C since that is the reference density used for this pressure unit.

Key Terminology

Foot water (4°C) [ftAq]: A pressure unit equal to the hydrostatic pressure from a 1-foot column of water at 4 degrees Celsius.
Standard atmosphere [atm]: A fixed pressure unit defined as exactly 101,325 pascals, representing average atmospheric pressure at sea level.
Hydraulic head: The height of a water column that corresponds to a particular pressure in fluid systems.

Quick Knowledge Check

What pressure unit does foot water (4°C) represent?

Pressure from a column of mercury

Pressure from 1 foot of water at 4°C

Atmospheric pressure variation

What is the exact value of 1 foot water (4°C) in standard atmospheres?

0.1000000 atm

0.0294989391 atm

1.0132500 atm

Which application commonly uses this conversion?

Electrical voltage measurement

Hydraulic head calculations for pumps

Measuring light intensity

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