🔥 Fire flow training tool

Fire Load / Required Fire Flow Calculator

Estimate fire load for training discussions and calculate a basic required fire flow using the common NFA-style quick formula.

Building / Fire Area

Length (ft)

Width (ft)

Fire floors involved

Percent involved (%)

Estimated fuel load (lb/ft²)

Heat value (BTU/lb)

Practical flow safety factor

Attack line flow used (GPM)

Fuel load and BTU estimates are rough training estimates. Required fire flow formulas vary by agency and use case. Follow department SOPs and local preplans.

Results

Involved fire area

— ft²

Basic fire flow estimate

— GPM

Practical planning flow

— GPM

Attack lines needed

—

Estimated heat potential

— BTU

Enter values and calculate.

Training formulas used

Basic fire flow = (Length × Width ÷ 3) × percent involved × floors involved Estimated fire load = Area × fuel load lb/ft² Estimated heat potential = fire load pounds × BTU/lb