Free CCTV Tools, Calculators & Surveillance Software
Plan your security system like a professional. Estimate CCTV storage and bandwidth, calculate the right camera lens, test port forwarding, and explore open-source surveillance software — every tool free to use.
- 12 Professional Tools
- 100% Free to Use
- Curated by Our Engineers
Quick CCTV Calculators
The three calculators our customers use most — estimate your CCTV storage, lens requirements and hard drive capacity in seconds.
CCTV Storage & Bandwidth Calculator
Estimate exactly how much disk space and network bandwidth your cameras need — for days, weeks or months of recording.
Open calculator Camera PlanningCCTV Lens Calculator
Find the perfect lens focal length and angle of view for any location — so every camera covers exactly what you need.
Open calculator By WDWD Surveillance Storage Estimator
Western Digital’s own hard drive capacity calculator, built specifically for surveillance recording workloads.
Open estimatorMore Free CCTV Tools & Software
Network tests, viewing angle maths, wireless link planning and free open-source surveillance platforms — everything our engineers use day to day.
Port Forwarding Test
Test your network ports for remote camera access.
Open toolIPv4 Addresses & Subnets
Calculate subnet masks and available host addresses.
Open toolViewing Angle Calculator
Determine your camera’s field of view based on its lens.
Open toolCamera Settings for Identification
Find the right resolution and pixels-per-foot to identify subjects.
Open toolFresnel Zone Calculator
Calculate clear line-of-sight requirements for wireless links.
Open toolHikvision Calculator Tool
Storage, bandwidth and device planner by Hikvision.
Open toolCP Plus HDD Calculator
Estimate recording days per hard drive capacity.
Open tool Open SourceZoneMinder
Open-source video surveillance management system.
Visit site Open SourceiSpyConnect
Remote camera viewing and alert platform.
Visit siteSecurity System Guides on YouTube
Prefer to watch? Our channel covers how modern security systems work, installation walkthroughs and product explainers.
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Note: These third-party tools are provided by their respective owners and open in a new tab. Wisenet Security curates them as a convenience — if you’d rather have the maths done for you, request a free quote or book a free survey and we’ll spec the whole system.
Turn Your Numbers Into a Free Quote
Used the calculators and know what you need? Get an instant security system quotation — or let our engineers design it for you with a free on-site survey.