What does decipascal measure?

Decipascal measures very small pressure levels; it equals one tenth of a pascal and is used for fine pressure distinctions like sound pressure or low differential pressures.

Why is foot water (4°C) used as a pressure unit?

Foot water (4°C) expresses pressure based on the hydrostatic pressure exerted by a 1-foot column of pure water at 4°C, commonly applied in hydraulics and fluid systems.

Can I use this conversion for fluids other than water?

This conversion assumes water density at 4°C; using it for other fluids or temperatures will affect the accuracy of the pressure values.

How to Convert from Decipascal [dPa] to Foot Water (4°C) [ftAq]

Easily convert pressure measurements from decipascal (dPa), a unit for very small pressures, to foot water (4°C) (ftAq), a unit expressing hydrostatic pressure based on water density at 4°C, commonly used in fluid systems and hydraulic applications.

Decipascal [dPa]

Foot water (4°C) [ftAq]

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

Decipascal [dPa] to Foot water (4°C) [ftAq] Conversion Table

Decipascal [dPa]	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.

Decipascal [dPa] to Foot water (4°C) [ftAq] Conversion Table
Decipascal [dPa]	Foot water (4°C) [ftAq]

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What Is This Tool?

This tool converts pressure values from decipascal (dPa) to foot water (4°C) (ftAq), enabling users to translate tiny pressure measurements into units reflecting hydraulic head in water at 4°C.

How to Use This Tool?

Enter the pressure value in decipascal (dPa) you wish to convert
Select decipascal as the from-unit and foot water (4°C) as the to-unit
Click the convert button to obtain the equivalent pressure in foot water (4°C)
Use the result for applications requiring hydraulic head or fluid pressure interpretation

Key Features

Converts pressure from decipascal to foot water (4°C) units
Based on the standard water density at 4°C for hydraulic head calculations
Ideal for interpreting low pressure measurements in fluid and environmental systems
Online, easy to use unit converter for precise small-scale pressure values

Examples

10 dPa equals 0.000334562 ftAq (10 × 0.0000334562 ftAq)
100 dPa equals 0.00334562 ftAq (100 × 0.0000334562 ftAq)

Common Use Cases

Expressing very small pressure amplitudes in acoustic or sensor calibrations
Specifying and interpreting hydraulic head for pumps and water distribution
Converting manometer or gauge readings in laboratory or HVAC systems
Measuring static head in groundwater or well depth-pressure relationships

Tips & Best Practices

Ensure the water temperature is close to 4°C for accurate foot water pressure relevance
Use sensitive instruments to detect very small pressure values after conversion
Double-check unit selections before converting to avoid measurement errors
Apply conversions in contexts matching the assumptions of fluid density and pressure range

Limitations

Assumes water density is constant at 4°C; deviations in temperature or fluid affect accuracy
Resulting foot water values are very small due to low pressure magnitude in decipascals
Requires appropriate instrumentation to reliably measure such fine pressure differences

Frequently Asked Questions

What does decipascal measure?: Decipascal measures very small pressure levels; it equals one tenth of a pascal and is used for fine pressure distinctions like sound pressure or low differential pressures.
Why is foot water (4°C) used as a pressure unit?: Foot water (4°C) expresses pressure based on the hydrostatic pressure exerted by a 1-foot column of pure water at 4°C, commonly applied in hydraulics and fluid systems.
Can I use this conversion for fluids other than water?: This conversion assumes water density at 4°C; using it for other fluids or temperatures will affect the accuracy of the pressure values.

Key Terminology

Decipascal (dPa): A unit of pressure equal to one tenth of a pascal, used to represent very small pressure differences.
Foot Water (4°C) (ftAq): A pressure unit defined by the hydrostatic pressure of a 1-foot column of pure water at 4°C, used to measure hydraulic head.
Hydraulic Head: The height of a water column that corresponds to a specific pressure in hydraulic systems.

Quick Knowledge Check

What is a decipascal primarily used to measure?

Large hydraulic pressures in fluid systems

Very small pressure magnitudes such as sound pressure

Temperature variations in fluids

The foot water (4°C) unit is based on pressure from what?

A 1-foot column of pure water at 4°C

A 1-meter column of mercury

A 1-foot column of seawater

Why might the conversion value vary from actual pressure?

Because the tool assumes water density at 4°C

Because decipascal measures temperature instead of pressure

Because foot water units are not related to fluid density

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