CCTV Storage & Bitrate Calculator
More megapixels and more frames per second mean a bigger bitrate — and a bigger hard disk to keep the days you need. Enter your setup to see the per-camera bitrate, daily footage size and total NVR storage, plus a suggested disk size. Ballpark figures for planning, not a guarantee. Runs in your browser.
Switching to H.265 roughly halves the disk versus H.264, and motion recording can cut it further — at the cost of missing quiet moments. Size the disk for the days you must legally or practically keep, then add headroom.
Planning estimate only — real bitrate swings with scene detail, motion, night IR and the recorder's VBR settings. Buy a size up, and check the NVR's maximum total bitrate can carry all your cameras.
Tune the numbers that drive storage
Related Guides — Deep-dive reading
CCTV Image Quality Explained (India 2026): Why More Megapixels Isn't Enough
The whole picture beyond megapixels — sensor size, aperture, lens quality, codec and bitrate — and why a well-lit 2MP camera beats a dark 8MP one on an Indian street.
SecurityCCTV Storage and HDD Sizing in India (2026): Getting the Days You Need
Why a surveillance-grade drive, not a desktop one, sizing storage by retention and bitrate, how many HDD bays and when RAID earns its place, loop recording and keeping drives healthy — for Indian homes and small buildings.
SecurityLocal Storage CCTV in India: NVR, DVR and Your Own Hard Disk, Explained
How on-site CCTV recording works, why a one-time recorder-plus-disk setup with no monthly bill still suits most Indian homes and shops, and how to counter its one real weakness — a stolen recorder.
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