Free Engineering Tools · 3 calculators
Reference Data and Conversions Calculators
Conversions and property data that come up in every fire protection calculation, with the source of each value.
- Each tool follows a published NFPA standard or code
- Free, runs in your browser; your inputs stay on your device
- Screening tool, not reviewed or sealed by a licensed engineer
- Last updated October 2026
The Calculators
About Reference Data and Conversions Calculators
Fire protection mixes US and SI units in the same project: gpm and L/min, psi and bar, Btu/s and kW, gpm/ft² and mm/min. These pages convert between them and list the property data the calculators use, each value cited to a public source.
Other categories
Water Supply and HydraulicsSprinkler System DesignSpecial Hazard SuppressionFire Dynamics and DetectionSmoke Control and TenabilityEgress and Occupant LoadStructural Fire ResistanceFlammable Liquids, Gases and RadiationAll calculators
Engineering aid only, provided as is and without warranty. Results depend on the inputs and on the simplifying assumptions of the method summarized on each tool page, and DGA has not verified them for your application. They do not replace code-required design, testing or review by the licensed engineer responsible for the project. Use of the tools is subject to the Terms of Use.