Fluid Property Calculator

Understanding the properties of fluids, such as density, specific heat, and thermal conductivity, among others, is crucial in the field of thermodynamics. These properties often change with temperature and are unique to each fluid. This tutorial focuses on substances like air, water, carbon dioxide, argon, helium, nitrogen, ethylene glycol, and its 30% and 50% solutions.

Fluid Property Calculator
Fluid Property Calculator Results
Density =
Dynamic Viscosity =
Kinematic Viscosity =
Specific Heat =
Conductivity =
Thermal Diffusivity =
Thermal Expansion Coefficient =
Prandtl Number =

Please provide a rating, it takes seconds and helps us to keep this resource free for all to use

[ 25 Votes ]

Example Formula

The density of a fluid, for instance, can be computed using the ideal gas law (assuming the fluid behaves as an ideal gas) given by:

ρ = P / (R × T)


  1. ρ: is the density of the fluid.
  2. P: is the pressure of the fluid.
  3. R: is the specific gas constant for the fluid.
  4. T: is the absolute temperature.

Who wrote/refined the formula

The ideal gas law was developed over time by multiple scientists including Boyle, Charles, and Avogadro, culminating in its present form in the mid-19th century. This law finds its relevance in fields such as thermodynamics, meteorology, and even engineering.

Real Life Application

The ideal gas law is used in numerous real-world applications. For example, engineers use this formula to determine the air density in the intake manifold of an internal combustion engine to control the air-fuel ratio, thereby optimizing engine performance.

Key individuals in the discipline

Robert Boyle, Jacques Charles, and Amedeo Avogadro are renowned scientists whose combined work resulted in the ideal gas law. They provided significant contributions to our understanding of the behavior of gases and their physical properties.

Interesting Facts

  1. The ideal gas law is not only used in physics but also in chemistry, engineering, atmospheric sciences, and even in medical applications like anesthesia.
  2. This law has paved the way for advancements in fields like aeronautics, meteorology, and climate science.
  3. The ideal gas law, despite its simplicity, is fundamental in modeling and understanding more complex physical phenomena in various fields.


Understanding the fluid properties of various substances at different temperatures is integral in thermodynamics. The ideal gas law provides a simple and effective way to compute these properties, offering invaluable insights into the behavior of gases and contributing significantly to numerous scientific and engineering applications.

Physics Calculators

You may also find the following Physics calculators useful.