Download HDD Calculator for CCTV

CCTV Storage Calculation: Saving Formulas and Storage Suggestions

Do you want to know how to calculate CCTV storage and hard drive capacity?

Do you need to figure out how to calculate CCTV storage and hard drive capacity?

Formula for calculating CCTV camera storage

Storage space (GB) = Bit rate (Kbps) * 1000/8 * 3600 * 24 * Cameras * Days / 1000,000,000

·         * 1000/8 = to convert kbps to Bytes

·         * 3600 = convert from seconds to hours

·         * 24 = convert from hour to day

·         Cameras = total number of cameras

·         Days = total number of days you want to record

You can now calculate CCTV camera storage or HDD capacity for CCTV using the above CCTV storage calculation formula.

If you have two cameras with a maximum bit rate of 1024Kbps and want to record continuously for seven days, use the following CCTV camera storage calculation formula:


1024 * 1000/8 * 3600 * 24 * 2 * 7/1000 000 000 = 154.8288 GB required storage space


This formula can also be used to calculate CCTV storage for various brands, such as Reolink IP Camera Storage Calculator, CCTV Storage Calculator for Samsung, Hikvision, Panasonic, Axis, Hoenywell, HD-SDI, Auetura, Milestone, Bosch, and others.

Please keep in mind that the results of the above CCTV storage calculator formula may not be exactly the same as your actual storage requirements, as the CCTV camera storage calculation is affected by a variety of factors.

What factors influence the CCTV storage calculation?

Here are the main factors to consider when calculating CCTV storage, which may affect your CCTV camera's recording capacity.

Resolution - The higher the resolution, the greater the CCTV camera's storage capacity in days.

Video compression is a technique that reduces the size of the original video file formats, requiring less CCTV storage space than the original files. H.264, MJPEG, and MPEG4 are the most popular video compression formats.

Bitrate - A higher bitrate contributes to better video quality, but it also means that more CCTV storage capacity is required, as you can see from the previous CCTV storage calculation formula. It is also influenced by resolution and compression formats. Lower bitrates are required for lower resolution and highly compressed videos.

The number of cameras you use can also have an impact on the CCTV storage calculation. If you use multiple cameras at the same time, you will need more CCTV storage space.

Days - The longer the CCTV recording retention period, the greater the CCTV storage capacity required.

In addition to these, other factors such as audio recordings, recording modes (motion activated recording or 24/7 recording), number of motion activities, lighting conditions of the scene, and so on can all have an impact on the CCTV storage calculation.

Even if the storage space of the IP camera or hard disk does not meet the required CCTV storage capacity according to the CCTV storage calculation formula, there is no need to be concerned.

When the CCTV storage reaches its maximum capacity, the original videos are typically overwritten by new ones. Just make a backup of any important documents before overwriting them.

You can simply download this easy to use HDD Storage Calculator for CCTV to know how much capacity you need for your Home or Office CCTV.

HDD calculator for CCTV

Post a Comment