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Accurate and fast Intake Velocity Calculator to find air or fluid intake speed instantly online. Simple, metric-friendly, and easy to use for all users.
IV = IFR / IA
Where IV is the intake velocity, IFR is the intake flow rate, and IA is the intake cross-sectional area.
If you’ve ever needed to find how fast air or fluid moves into an intake, this calculator’s for you. Our Intake Velocity Calculator makes it quick and simple. You’ll get accurate results without long formulas or confusing steps. It’s built for engineers, students, and anyone working with airflow or water systems.
Intake velocity means how fast air or liquid enters a system’s intake. It’s measured in meters per second (m/s). Imagine air rushing into an engine or water flowing into a pipe. The speed of that flow is the intake velocity. It helps you understand how efficiently a system pulls in air or fluid.
In short, it tells you how quickly something moves through an opening.
The formula is very simple and follows standard fluid dynamics:
Intake Velocity (IV) = Intake Flow Rate (IFR) / Intake Area (IA)
Where:
For example:
If the flow rate is 20 m³/s and the intake area is 10 m², then:
IV = 20 / 10 = 2 m/s
That means the intake velocity is 2 meters per second.
You’ll love how easy this is. Here’s how it works:
The calculator instantly converts all units into standard values, performs the calculation, and gives your final result in your preferred unit.
It even shows every step, so you can see exactly how the value was found. That’s great for students learning fluid mechanics or HVAC designers checking their designs.
Knowing the intake velocity helps prevent system overloads, reduce energy waste, and improve performance. In HVAC systems, it ensures smooth airflow. In engines, it helps with fuel efficiency. And in water systems, it helps maintain pressure balance.
Too high a velocity can cause noise, turbulence, or even damage. Too low, and the system may underperform. That’s why this calculator gives you precision with speed.
Let’s take a real-world example.
Flow Rate = 15 m³/s
Intake Area = 5 m²
Then:
IV = 15 / 5
IV = 3 m/s
If you want this in kilometers per hour, just choose km/h. The tool converts it instantly.
Our Intake Velocity Calculator makes technical work simple. You don’t need to memorize formulas or do manual conversions. Everything happens automatically. You’ll save time, avoid errors, and get clear step-by-step results.
It’s especially useful for:
The Intake Velocity Calculator is designed for accuracy and ease. It uses proven physics and standard SI units to give reliable results. Whether you’re in a workshop, classroom, or design lab, it’s the fastest way to calculate air or fluid intake velocity.
You’ll understand the science, see each step, and get results in seconds. Try it once, and you’ll never go back to manual math.
You can input flow rate in m³/s, L/s, or ft³/s, and area in m², cm², or ft². You can also get the result in m/s, km/h, ft/s, mph, or knots.
Yes. It works for any fluid, including air, water, and gases.
It helps you check system efficiency, reduce losses, and maintain proper performance in ventilation, hydraulics, and engines.
Yes, it uses verified unit conversions and the standard intake velocity formula from the U.S. Geological Survey Water Science School.
Absolutely. It’s mobile-friendly and works smoothly on all devices.