Engineering Tools for Life Safety Systems

FireSecure Tools

Practical calculators for fire, life safety, security, CCTV, access control and low-voltage electrical systems.

Built for quick checks, design estimates, commissioning work and on-site fault finding.

Engineering Calculators

Fire Alarm Battery CalculatorEstimate standby capacity using quiescent and alarm currents, durations and derating factors. CCTV Storage CalculatorEstimate retention storage and compare it with common RAID configurations. PoE Budget CalculatorCheck total switch budget, per-port limits and spare capacity. PoE UPS Battery CalculatorSize a UPS battery bank for PoE switches, CCTV, access control and network equipment. Voltage Drop CalculatorEstimate copper cable resistance, voltage drop and percentage drop. DIP Switch CalculatorConvert numeric addresses into ON/OFF switch patterns. Ohm's Law CalculatorEnter any two electrical values to calculate the remaining values.

Built for practical engineering work

Results are intended for estimates and documentation support. Always check critical values against applicable standards, project requirements and manufacturer documentation.

Pair calculations with the Fire Secure UK technical wiki, including guidance on fire alarm systems, CCTV engineering, Power over Ethernet and UK cabling practice.

FireSecure Tools FAQ

Who are these calculators for?

Engineers, designers, commissioning engineers and technicians working with fire alarm, CCTV, access control and electrical systems.

Are these calculations compliant with standards?

They provide engineering estimates and quick checks. Final designs must be verified against applicable requirements.

Are the tools free?

Yes. All FireSecure calculators are free to use.