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  1. Home
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  3. Fluid Mechanics
  4. Flow Rate Calculator
Physics CalculatorFluid Mechanics

Flow Rate Calculator

Calculate the volumetric flow rate of a fluid through a pipe or channel. This calculator is essential for plumbing design, irrigation systems, and industrial fluid handling.

Updated 2025-01-153 min read

Calculator

Enter your values below

Cross-sectional area of the pipe or channel

Average velocity of the fluid

Formula & Methodology

How this calculator works

Q = Av

Volumetric flow rate equals the cross-sectional area multiplied by the average fluid velocity.

Frequently Asked Questions

Common questions about this calculator

Disclaimer

These calculators are for educational and informational purposes only. While we strive for accuracy, results should be verified for critical applications. Always consult authoritative sources for engineering or scientific work.

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Apply continuity equation using A₁v₁ = A₂v₂.

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Calculate pressure using P = F/A.

Hydrostatic Pressure Calculator

Find hydrostatic pressure using P = ρgh.

Buoyancy Force Calculator

Find buoyant force using F_b = ρ_fluid × V_displaced × g.

Reynolds Number Calculator

Find Reynolds number using Re = ρvD/μ.

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