Hydrofoil Lift Calculator


Hydrofoil technology has revolutionized various industries, particularly in marine engineering and transportation. Understanding hydrofoil lift is crucial for optimizing design and performance. In this article, we’ll delve into the concept of hydrofoil lift and provide a handy calculator to aid in calculations.

How to Use

To utilize the hydrofoil lift calculator effectively, simply input the required parameters into the designated fields. Once all parameters are entered, click the “Calculate” button to obtain the result.


The hydrofoil lift force F can be calculated using the following formula:


  • CL​ is the lift coefficient
  • ρ is the density of the fluid
  • A is the area of the hydrofoil
  • V is the velocity of the fluid

Example Solve

Suppose we have a hydrofoil with a lift coefficient of 0.5, exposed to seawater with a density of 1025 kg/m³, a hydrofoil area of 10 m², and a fluid velocity of 15 m/s. Let’s calculate the lift force.

Calculating Lift Force:




Q: What is hydrofoil lift?
A: Hydrofoil lift is the upward force exerted on a hydrofoil due to the flow of fluid over its surface. It enables vessels equipped with hydrofoils to rise above the water surface, reducing drag and increasing speed.

Q: How does the lift coefficient affect hydrofoil performance?
A: The lift coefficient represents the efficiency of the hydrofoil in generating lift. Higher lift coefficients indicate greater lift generation for the same conditions, resulting in improved performance.

Q: Can hydrofoil lift be negative?
A: Yes, in certain scenarios, hydrofoil lift can be negative, resulting in a downward force known as negative lift or downforce. This may occur at specific angles of attack or due to unfavorable conditions.


Understanding hydrofoil lift is pivotal in optimizing the design and performance of hydrofoil-equipped vessels. By utilizing the hydrofoil lift calculator and comprehending the underlying principles, engineers and enthusiasts can enhance efficiency and achieve superior hydrodynamic performance.

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