Dynamic Viscosity of Water
Reference table, calculator, and chart for water viscosity at standard atmospheric pressure
Dynamic Viscosity of Water Calculator
Enter a temperature in Celsius or Kelvin to calculate the dynamic viscosity of water:
Dynamic Viscosity of Water Table
| Temperature (°C) | Dynamic Viscosity (mPa·s) |
|---|---|
| 0 | 1.792 |
| 5 | 1.519 |
| 10 | 1.307 |
| 15 | 1.139 |
| 20 | 1.002 |
| 25 | 0.890 |
| 30 | 0.798 |
| 35 | 0.719 |
| 40 | 0.653 |
| 45 | 0.596 |
| 50 | 0.546 |
| 55 | 0.501 |
| 60 | 0.460 |
| 65 | 0.424 |
| 70 | 0.391 |
| 75 | 0.361 |
| 80 | 0.335 |
| 85 | 0.311 |
| 90 | 0.290 |
| 95 | 0.271 |
| 100 | 0.282 |
Dynamic Viscosity of Water Chart
About Dynamic Viscosity of Water
Dynamic viscosity measures a fluid’s resistance to flow, quantifying the internal friction between adjacent fluid layers. It is a critical property in fluid mechanics, thermodynamics, hydraulic systems, and heat transfer calculations, affecting flow behavior, pump performance, and energy dissipation in piping and thermal systems.
Standard Reference Value
At 25°C (298.15 K) and standard atmospheric pressure, water has a dynamic viscosity of approximately 0.890 mPa·s. This serves as a standard reference for engineering, laboratory experiments, and hydraulic system design.
Factors Affecting Water Viscosity
Water viscosity varies primarily with temperature and, to a lesser extent, pressure. As temperature increases, viscosity decreases, influencing flow regimes, Reynolds number, and laminar-to-turbulent transitions. Understanding viscosity variations is essential for:
- Fluid Mechanics: Accurate modeling of pipe flow, channels, pumps, and turbines.
- Hydraulic System Design: Sizing pumps, valves, and piping for efficient energy use.
- Heat Transfer & Thermal Systems: Determining convective heat transfer rates and system efficiency.
- Engineering Simulations: CFD modeling of fluid behavior and performance analysis.
- Environmental & Laboratory Applications: Studying water flow, mixing, and viscosity-dependent phenomena.
How Engineers Use Water Viscosity
Engineers and scientists combine water viscosity with other properties—such as density, temperature, and specific heat— to accurately model and optimize hydraulic systems, heat exchangers, energy transfer devices, and fluid machinery.
This page provides a dynamic viscosity table, interactive calculator, and graphical chart to help engineers, students, and researchers determine water viscosity accurately across a wide range of temperatures, ensuring precision in flow analysis, thermal system design, and fluid mechanics calculations.