CCTV Storage Calculator
📷 CCTV Storage Calculator
Calculate exact storage requirements for your surveillance system
System Inputs
cameras
Equivalent ~4 Mbps bitrate
Megabits per second per camera
days
Extra space for safety & future
Calculation Results
Step 1 — Per Camera/Day
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Step 2 — All Cameras/Day
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Step 3 — Retention Total
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| Item | Formula | Result |
|---|---|---|
| Storage per Camera per Day | Bitrate × 60 × 60 × hrs / 8 | – |
| Total Storage per Day | Storage/Camera/Day × No. of Cameras | – |
| Total for Retention Period | Total/Day × No. of Days | – |
| With Overhead Buffer | Total × (1 + overhead%) | – |
🗄️ Recommended Storage Capacity
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Including overhead buffer for safety & future use
Raw Total
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📌 Notes:
• 1 Byte = 8 Bits | 1 GB = 1,024 MB | 1 TB = 1,024 GB
• Actual storage may vary due to compression (H.264/H.265), motion activity & camera settings.
• H.265 encoding can reduce storage by up to 50% compared to H.264.
• Recommended capacity includes buffer for system files and overhead.