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What size fan does my grow need?

Enter your tent size and lighting. We'll tell you the CFM / m³·h you actually need, what inline fan diameter hits that number, and warn you if you're trying to ventilate more space than one fan can handle. Brand-agnostic — works with any manufacturer.

Tent length (m)

Tent width (m)

Tent height (m)

Quick presets

Growth stage + CO₂

Lighting

Carbon filter fitted?

Ducting (straight metres + bends)

— CFM

Air flow required at the fan

—

m³ per hour

—

Recommended size

—

Typical wattage

Matches one standard inline fan

A single inline fan in this class handles your tent comfortably.

Controller match

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