Fire Flow Calculator — Free Online Tool
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Fire Flow Calculator

Calculate required fire flow (GPM) based on building area and construction type

ISO Standard Formula: $F = 18 \times C \times A^{0.5}$, where $F$ is the required fire flow in GPM, $C$ is the construction coefficient, and $A$ is the effective area.
Building Parameters

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⚠️ Fire flow requirements are governed by local fire codes, insurance underwriters (ISO), and building occupancy hazards. Always verify specifications with local fire marshals.

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