Physics

Mass Flow Rate Calculator

Find mass flow rate from density, area and velocity.

Density (kg/m³)

Cross-section area

Velocity

Calculated Output

Mass flow rate (kg/s) 30

Formula: ṁ = ρ·A·v

Step-by-Step Breakdown

1. Values used:

2. Density = 1,000 kg/m³

3. Cross-section area = 0.01

4. Velocity = 3

6. Mass flow rate = Density x Cross-section area x Velocity = 1,000 x 0.01 x 3 = 30kg/s

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The math behind it

ṁ = ρ·A·v, the product of density, pipe area and flow velocity.

Water, 0.01 m², 3 m/s → 30 kg/s.

Mass vs volume flow?

Volume flow Q = A·v; multiply by density to get mass flow.