CCTV Storage Calculator
Calculate recording storage from your camera bitrate, retention period and schedule. See the formula and export your results.
CCTV ToolkitYour security in4 free security tools
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Manufacturer documentation and standards references. Independent site; no affiliation or media endorsement claimed.
About us
A camera system is a collection of practical decisions. How much storage will a month of recordings need? Will a camera cover the entrance? Can a recorder accept another video stream? The answers depend on real settings, dimensions and documented specifications. Security in China brings those details together in free tools, with visible formulas and source-linked equipment records, so you can make informed decisions before an installation.
We build tools that make every* camera-planning problem clearer for anyone to solve.
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with clear assumptions
Most popular tools
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Bandwidth Calculator
Plan camera recording and viewing traffic with a headroom allowance for the network link you are sizing.
CCTV ToolkitField of View Calculator
Find scene width and horizontal pixel density at a target distance using your exact camera viewing angle.
CCTV ToolkitPoE Budget Calculator
Check whether a switch power budget covers the peak load of your cameras and your selected reserve.
CCTV ToolkitCamera Coverage Simulator
Place cameras on a floor plan, adjust their direction and field of view, and export a reusable coverage plan.
Camera SimulatorCamera & NVR Compatibility
Evaluate recording resolution, shared codecs, channels and incoming bandwidth. Understand what still needs verification.
Compatibility CheckerHikvision DS-2CD2043G2-I · 2.8 mm
4 MP camera with a 103° horizontal field of view. Review the lens-specific manufacturer specifications.
Camera DatabaseHikvision DS-2CD2043G2-I · 4 mm
Compare the 4 mm lens, with an 84° horizontal field of view and 802.3af PoE, against other documented variants.
Camera DatabaseHikvision DS-2CD2043G2-I · 6 mm
Explore the narrower 52° view of the 6 mm lens. Use its documented angle in the coverage simulator.
Camera DatabaseDahua IPC-HDW2449T-S-IL · 2.8 mm
Review the 95° horizontal view, 4 MP stream and declared profiles in the linked S0 manufacturer datasheet.
Camera DatabaseDahua IPC-HDW2449T-S-IL · 3.6 mm
Compare this 78° fixed-lens variant with the wider 2.8 mm model using the same source document.
Camera DatabaseReolink RLC-810A · 4 mm
Explore documented 8 MP recording, H.265 video and an 87° horizontal view for the 4 mm lens.
Camera DatabaseHikvision Camera Specifications
Explore documented Hikvision camera records, compare available lens variants and follow the original manufacturer references.
Camera BrandsDahua Camera Specifications
Explore documented Dahua camera records, compare available lens variants and follow the original manufacturer references.
Camera BrandsReolink Camera Specifications
Explore documented Reolink camera records, compare available lens variants and follow the original manufacturer references.
Camera BrandsHikvision NVR Specifications
Review the documented DS-7608NI-K2/8P D/E recording limits and load them into the compatibility checker.
Recorder Database