FireTools

Professional fire protection calculators for engineers and contractors. All apps work 100% offline.

NFPA 13 · NFPA 14 · NFPA 20 · NFPA 72 · NFPA 10

Our Calculators

Sprinkler Hydraulic Calc

Hydraulic calculations per NFPA 13. Density/area curves, K-factor flow, hose stream demand for all hazard classes.

NFPA 13
Light, Ordinary 1-2, Extra 1-2 hazard classes

Pipe Schedule Sprinkler

Pipe schedule method per NFPA 13 §23.4. Pipe sizes by section for steel, CPVC, and copper systems.

NFPA 13
Branch lines, cross mains, feed mains, risers

Fire Pump Sizer

Fire pump selection per NFPA 20. Rated flow, pressure, horsepower, pump type, and driver selection.

NFPA 20
500-2500 GPM, electric & diesel drivers

Standpipe Calculator

Standpipe system design per NFPA 14. Flow rates, pressures, and pipe sizes by class (I, II, III).

NFPA 14
Class I: 500 gpm, Class III: 500+250 each

Fire Alarm Calculator

Detector spacing and placement per NFPA 72. Smoke and heat detectors, NAC circuit calculations.

NFPA 72
Table 17.6.3.5.1 detector spacing

Hazard Classification

Occupancy hazard classification per NFPA 13. 100+ occupancy types mapped to hazard class, density, and area.

NFPA 13
Annex A occupancy classification

Water Supply Analysis

Flow test analysis with Hazen-Williams. Static, residual, and flow pressure calculations for fire protection supply.

NFPA 13/AWWA
N^1.85 supply curve, available pressure

Hanger Spacing Calc

Pipe hanger and support spacing per NFPA 13 Table 9.2.2.1. Seismic bracing per §9.3.

NFPA 13
Steel, copper, CPVC pipe types

Fire Extinguisher Calc

Extinguisher selection and placement per NFPA 10. Class A/B/C/D/K, travel distance, minimum ratings.

NFPA 10
Travel distance & rating requirements

NFPA Code Reference

Searchable reference for NFPA 13, 14, 20, 25, 72, and 10. Key tables, figures, and requirements at your fingertips.

All NFPA
Quick lookup for field & office