What does a millimeter water (4°C) represent?

It represents the hydrostatic pressure from a 1 mm column of pure water at 4°C under standard gravity, used for measuring very small pressures.

Why convert millimeter water (4°C) to dekapascal?

Converting to dekapascal allows expressing small pressure values in a standardized SI-derived unit suitable for technical comparisons and integration.

Are the conversion results exact under all conditions?

The conversion assumes water at 4°C and standard gravity; variations can cause slight inaccuracies, so results are most accurate under these conditions.

How to Convert from Millimeter Water (4°C) to Dekapascal [daPa]

Convert pressure values from millimeter water (4°C), a unit for very small pressures, to dekapascal [daPa], an SI-derived unit used in various technical fields including HVAC and audiology.

Millimeter water (4°C)

Dekapascal [daPa]

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

Millimeter water (4°C) to Dekapascal [daPa] Conversion Table

Millimeter water (4°C)	Dekapascal [daPa]

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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Interval

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Millimeter water (4°C) to Dekapascal [daPa] Conversion Table
Millimeter water (4°C)	Dekapascal [daPa]

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What Is This Tool?

This tool converts pressure measurements from millimeter water (4°C), representing hydrostatic pressure from a 1 mm column of water at maximum density, into dekapascal (daPa), a metric pressure unit equal to 10 pascals. It supports applications needing precise conversion of small pressure values.

How to Use This Tool?

Enter the value of pressure measured in millimeter water (4°C)
Select millimeter water (4°C) as the input unit
Choose dekapascal [daPa] as the output unit
Click the convert button to get the equivalent pressure in dekapascal
Use the converted value for technical analysis or documentation purposes

Key Features

Converts small pressure units between millimeter water (4°C) and dekapascal [daPa]
Based on an exact conversion rate derived from standard definitions and conditions
Useful for technical fields like HVAC, audiology, cleanroom monitoring, and laboratory calibration
Browser-based and easy to use with clear input and output values
Supports quick understanding of pressure differences in small-scale systems

Examples

5 millimeter water (4°C) converts to approximately 4.90319 daPa
10 millimeter water (4°C) converts to approximately 9.80638 daPa
Multiply any given millimeter water (4°C) pressure by 0.980638 to get the value in daPa

Common Use Cases

Measuring low pressures with manometers in HVAC static pressure and cleanroom differentials
Calibrating and specifying low-range pressure sensors in laboratories
Evaluating pressure drops in small plumbing and drainage scenarios
Audiology assessments such as tympanometry and middle-ear pressure readings
Monitoring small pneumatic systems and filters in cleanroom and building diagnostics

Tips & Best Practices

Ensure water temperature is 4°C and standard gravity conditions apply for accurate measurements
Use millimeter water (4°C) units when measuring extremely low pressures
Convert to dekapascal when integrating pressure data into SI-derived systems or larger-scale analyses
Cross-check conversions when working in sensitive measurement environments
Understand the suitability of each unit for specific pressure ranges to maintain accuracy

Limitations

Conversion assumes water at exactly 4°C and standard gravity, with possible deviations otherwise
Dekapascal is better suited for slightly larger pressures than millimeter water (4°C)
Accuracy considerations are important for very sensitive or highly precise pressure measurements
Not intended for pressure units or conditions outside those explicitly defined

Frequently Asked Questions

What does a millimeter water (4°C) represent?: It represents the hydrostatic pressure from a 1 mm column of pure water at 4°C under standard gravity, used for measuring very small pressures.
Why convert millimeter water (4°C) to dekapascal?: Converting to dekapascal allows expressing small pressure values in a standardized SI-derived unit suitable for technical comparisons and integration.
Are the conversion results exact under all conditions?: The conversion assumes water at 4°C and standard gravity; variations can cause slight inaccuracies, so results are most accurate under these conditions.

Key Terminology

Millimeter water (4°C): A pressure unit representing the hydrostatic pressure from a 1 mm water column at 4 °C under standard gravity, used for very small pressure measurements.
Dekapascal (daPa): An SI-derived pressure unit equal to 10 pascals, used for quantifying force per unit area in various technical and scientific applications.
Hydrostatic Pressure: The pressure exerted by a fluid at equilibrium due to the force of gravity acting on it.

Quick Knowledge Check

What is the equivalent of 1 millimeter water (4°C) in dekapascal?

0.980638 daPa

1.0 daPa

10 daPa

Which unit is better for extremely low pressure measurements?

Dekapascal

Millimeter water (4°C)

Pascal

For which temperature is the millimeter water pressure unit defined?

4°C

0°C

20°C

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