What Is This Tool?
This converter translates pressure measurements from millimeter water (4°C), a unit representing very small hydrostatic pressures, into kilopascals (kPa), a widely used standard SI unit for pressure. It assists users in converting precise low-level water pressure measurements to a common engineering and atmospheric pressure unit.
How to Use This Tool?
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Enter the pressure value in millimeter water (4°C)
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Select the source unit: millimeter water (4°C)
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Select the target unit: kilopascal [kPa]
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Click convert to get the equivalent pressure in kilopascal
Key Features
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Converts millimeter water (4°C) pressure values to kilopascal (kPa)
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Supports low-pressure measurements common in HVAC, laboratory, and cleanroom applications
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Provides quick calculations for practical and scientific use
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Browser-based and easy to use without installation
Examples
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5 millimeter water (4°C) converts to 0.0490319 kPa
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10 millimeter water (4°C) converts to 0.0980638 kPa
Common Use Cases
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Measuring low-pressure differentials in HVAC systems and cleanrooms
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Calibrating low-range pressure sensors in laboratories
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Specifying pressure drops in small plumbing or drainage systems
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Reporting atmospheric pressure or meteorological data
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Designing pneumatic and hydraulic equipment
Tips & Best Practices
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Ensure measurement conditions are at 4°C and under standard gravity for accuracy
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Use precision instruments for detecting very small pressure differences
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Convert low-pressure millimeter water values to kPa for easier integration into engineering systems
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Verify units carefully to avoid conversion errors
Limitations
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Not suitable for high-pressure measurements since millimeter water (4°C) covers very small pressures
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Pressure readings can be affected by temperature and gravity deviations from standard conditions
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Accurate conversion relies on precise instrumentation
Frequently Asked Questions
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What does millimeter water (4°C) measure?
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It measures the hydrostatic pressure exerted by a 1 mm column of pure water at 4 °C under standard gravity.
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Why convert millimeter water (4°C) to kilopascal?
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Converting to kilopascal helps translate very small pressure measurements into a common SI unit used in engineering and atmospheric sciences.
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Can this conversion be used for high-pressure systems?
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No, millimeter water (4°C) is designed for very low-pressure measurements and is not suitable for high-pressure applications.
Key Terminology
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Millimeter water (4°C)
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A unit of pressure representing the hydrostatic pressure exerted by a 1 mm column of water at 4 °C under standard gravity.
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Kilopascal (kPa)
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An SI derived unit of pressure equal to 1,000 pascals, commonly used to quantify force per unit area in engineering and meteorology.
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Hydrostatic pressure
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Pressure exerted by a fluid due to its weight when at rest.