No. This is area from Q and v only.

Is the rectangle aspect ratio checked?

No. You must verify noise, installation, and code constraints separately.

Duct Size & Velocity Calculator

Continuity only: A = Q̇/v, round D = √(4A/π), rectangular height from A and a known width. Does not apply friction, aspect-ratio noise rules, or SMACNA construction details.

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So geht's

1Enter volumetric flow (m³/s, L/s, CFM, or gpm if reusing hydronics units).
2Enter mean velocity target in m/s.
3Pick round (diameter) or rectangular (supply one side, get the other).

Häufige Fragen

Are losses included?: No. This is area from Q and v only.
Is the rectangle aspect ratio checked?: No. You must verify noise, installation, and code constraints separately.