What is a centimeter water (4°C)?

It is a non-SI unit of pressure equal to the pressure exerted by a 1 cm column of pure water at 4°C, approximately 98.0665 pascals, often used in medical and laboratory contexts.

What does femtopascal [fPa] measure?

A femtopascal is 10⁻¹⁵ pascals and represents extremely small pressures, such as those found in ultra-high-vacuum experiments or astrophysical environments.

When should I use this conversion?

Use this conversion when you need to express pressure measurements at very fine scales, especially when moving from physiological or lab-scale units to ultra-low pressures in physics or space science.

How to Convert from Centimeter Water (4°C) to Femtopascal [fPa]

Learn how to convert pressure values from the unit centimeter water (4°C) to femtopascal [fPa], including practical examples and use cases in medical, laboratory, and scientific fields.

Centimeter water (4°C)

Femtopascal [fPa]

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Centimeter water (4°C) to Femtopascal [fPa] Conversion Table

Centimeter water (4°C)	Femtopascal [fPa]

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Centimeter water (4°C) to Femtopascal [fPa] Conversion Table
Centimeter water (4°C)	Femtopascal [fPa]

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What Is This Tool?

This tool helps you convert pressure measurements from centimeter water (4°C), a small pressure unit used in medical and laboratory settings, to femtopascal [fPa], an ultra-small pressure unit applied in scientific research such as astrophysics and vacuum technology.

How to Use This Tool?

Enter the pressure value in centimeter water (4°C).
Select centimeter water (4°C) as the input unit.
Choose femtopascal [fPa] as the output unit.
Click convert to see the corresponding pressure expressed in femtopascal [fPa].

Key Features

Converts centimeter water (4°C) pressure units to femtopascal [fPa].
Supports precise pressure translation from physiological and lab scales to ultra-low scientific scales.
Easy and intuitive browser-based interface.
Includes practical examples demonstrating conversion calculations.

Examples

2 centimeter water (4°C) equals 196127600000000000 femtopascal [fPa].
0.5 centimeter water (4°C) equals 49031900000000000 femtopascal [fPa].

Common Use Cases

Reporting airway and ventilator pressures in respiratory care such as peak inspiratory pressure and PEEP.
Measuring small hydrostatic or differential pressures in laboratory experiments with manometers and low-pressure sensors.
Setting suction or pressure levels on medical devices like chest drains and CPAP/BiPAP machines.
Expressing extremely low gas pressures in astrophysical or interplanetary space research.
Specifying target residual pressures in ultra-high-vacuum experiments in physics and precision measurements.

Tips & Best Practices

Use this conversion when translating from small-scale physiological pressures to ultra-low scientific pressures.
Verify that your measurement context warrants the use of femtopascal units given their extreme smallness.
Apply the conversion carefully in specialized scientific or medical research scenarios.
Refer to conversion examples to ensure accuracy during manual calculations.

Limitations

Femtopascal units relate to extremely low pressures mostly theoretical or relevant only in specialized science fields.
Practical pressure measurements in centimeters of water typically do not require femtopascal-level precision.
This conversion may have limited practical use outside fundamental physics or astrophysical research.

Frequently Asked Questions

What is a centimeter water (4°C)?: It is a non-SI unit of pressure equal to the pressure exerted by a 1 cm column of pure water at 4°C, approximately 98.0665 pascals, often used in medical and laboratory contexts.
What does femtopascal [fPa] measure?: A femtopascal is 10⁻¹⁵ pascals and represents extremely small pressures, such as those found in ultra-high-vacuum experiments or astrophysical environments.
When should I use this conversion?: Use this conversion when you need to express pressure measurements at very fine scales, especially when moving from physiological or lab-scale units to ultra-low pressures in physics or space science.

Key Terminology

Centimeter water (4°C): A unit of pressure defined by the hydrostatic pressure of a 1 cm column of water at 4°C, used in medical and laboratory settings.
Femtopascal [fPa]: A unit of pressure equal to 10⁻¹⁵ pascals, used to describe ultra-low pressures in scientific and astrophysical research.
Hydrostatic Pressure: The pressure exerted by a fluid due to gravity at a given depth, such as water in this context.

Quick Knowledge Check

What is the approximate value of 1 centimeter water (4°C) in femtopascal?

9.8 × 10^7 femtopascal

9.8 × 10^16 femtopascal

9.8 × 10^-7 femtopascal

Which field commonly uses centimeter water (4°C) for pressure measurements?

Astrophysics

Respiratory care

Space vacuum research

Femtopascal units are best suited for measuring pressures that are:

Very high

Extremely low

Moderate

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