What does one foot water (4°C) represent?

It represents the pressure from a one-foot column of pure water at 4 degrees Celsius, based on the reference density of water at that temperature.

Why is the pascal unit widely used in engineering and meteorology?

Because it defines pressure as force per unit area in newtons per square meter, providing a standard measure for stress and pressure in fluids and solids.

When should I avoid using the foot water (4°C) unit?

Avoid using it for high pressures or fluids other than water, as its accuracy depends on water’s properties at 4°C, making pascal or other units more appropriate.

How to Convert Pascal [Pa] to Foot Water (4°C) [ftAq]

Easily convert pressure values from pascal [Pa] to foot water (4°C) [ftAq], a unit representing hydraulic head based on the water column at 4°C. Useful for hydraulics, water distribution, HVAC, and groundwater pressure analysis.

Pascal [Pa]

Foot water (4°C) [ftAq]

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

Pascal [Pa] to Foot water (4°C) [ftAq] Conversion Table

Pascal [Pa]	Foot water (4°C) [ftAq]

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

Enter the ending number (positive decimal or integer > Start Value). Example: 10, 50, 100.

Interval

Enter the step size (positive decimal > 0 and < End Value – Start Value). Example: 1.0, 2.5.

Pascal [Pa] to Foot water (4°C) [ftAq] Conversion Table
Pascal [Pa]	Foot water (4°C) [ftAq]

Explore More Pressure Units Converter

What Is This Tool?

This unit converter helps transform pressure measurements from pascals, the SI unit for pressure and stress, into foot water (4°C), which reflects the hydrostatic pressure of a one-foot column of water at 4 degrees Celsius. It serves professionals working with fluid dynamics, hydraulics, and environmental monitoring.

How to Use This Tool?

Enter the pressure value in pascals (Pa) you wish to convert
Select pascal as the input unit and foot water (4°C) as the output unit
Click the convert button to get the equivalent pressure in ftAq
Review the result which corresponds to the pressure exerted by a water column at 4°C
Use the converted value for hydraulic, HVAC, or groundwater analysis

Key Features

Accurate transformation from pascal to foot water (4°C) pressure units
Designed for use in hydraulics, pumping systems, and fluid instrumentation
Browser-based and user-friendly interface suitable for engineers and technicians
Supports interpreting manometer and gauge data related to water columns
Facilitates pressure representation in terms of hydraulic head or fluid depth

Examples

Convert 1000 Pa: results in 0.3345623 ftAq, representing a water column pressure
Convert 500 Pa: yields 0.16728115 ftAq for hydraulic head measurements

Common Use Cases

Expressing low pressure hydraulics and head in pump and water distribution systems
Interpreting fluid pressures in laboratory instrumentation and HVAC diagnostics
Calculating static water head and pressure-depth relations in groundwater surveys
Converting manometer readings between mechanical pressure and hydraulic head units

Tips & Best Practices

Ensure water temperature reference is 4°C for accurate foot water unit conversion
Use pascal units for high pressure or non-water-based fluid systems instead
Verify unit selection before conversion to avoid misinterpretation of results
Apply this conversion primarily for low pressure, water-related hydraulic applications

Limitations

Foot water (4°C) depends on water density at 4°C, limiting accuracy if temperature varies
Not suitable for high pressure or fluids other than water; pascal is preferred then
Conversions assume standard density conditions, which may not apply in all scenarios

Frequently Asked Questions

What does one foot water (4°C) represent?: It represents the pressure from a one-foot column of pure water at 4 degrees Celsius, based on the reference density of water at that temperature.
Why is the pascal unit widely used in engineering and meteorology?: Because it defines pressure as force per unit area in newtons per square meter, providing a standard measure for stress and pressure in fluids and solids.
When should I avoid using the foot water (4°C) unit?: Avoid using it for high pressures or fluids other than water, as its accuracy depends on water’s properties at 4°C, making pascal or other units more appropriate.

Key Terminology

Pascal [Pa]: The SI unit of pressure, defined as one newton per square meter, measuring mechanical stress and fluid pressure.
Foot water (4°C) [ftAq]: A pressure unit indicating the hydrostatic pressure exerted by a one-foot column of water at 4 degrees Celsius.
Hydraulic Head: The height of a water column that corresponds to a specific pressure in fluid systems.

Quick Knowledge Check

What is the base temperature reference for foot water (ftAq) pressure units?

20°C

4°C

0°C

Which unit represents pressure as force per square meter?

Foot water (4°C)

Pascal

Atmosphere

For what application is converting pascal to foot water (4°C) especially useful?

High pressure gas systems

Hydraulic head in water systems

Thermal insulation calculations

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