How Much Data Does a Security Camera Use a Month? Realistic Estimates

A security camera can use almost no internet data on some days, or hundreds of gigabytes a month if it is constantly uploading video. That is why the answer to “How much data does a security camera use a month?” depends less on the camera itself and more on how it records, stores and sends footage.

A locally recording camera may only use data for alerts, live view and downloads, while continuous cloud recording can use a much larger allowance. This guide explains the main factors, gives practical monthly ranges, and shows how to estimate usage before adding more cameras or choosing a 4G plan.

Quick Answer: How Much Data Does a Security Camera Use a Month?

For one camera, a practical planning range is roughly 1–20 GB per month for light motion-triggered use, 20–100 GB for frequent events and live viewing, and 300 GB to more than 2 TB for continuous internet transmission, depending on resolution and bitrate.

Local storage usually keeps usage closer to the lower end because full recordings remain on the device, HomeBase, microSD card, or recorder until you choose to view them remotely.

When people ask does security camera use a lot of data, they often mix up local network traffic with internet traffic. A camera can send a large amount of video to a local recorder over Wi-Fi or Ethernet without that entire stream counting against a broadband or SIM allowance.

When Does a Security Camera Use the Internet?

A connected camera may communicate with the internet throughout the day, but that does not mean it is uploading full-resolution video continuously. The amount changes with the features you enable and the storage route you choose.

Internet data is typically used when the camera sends a motion clip to cloud storage, creates a thumbnail notification, streams live video to your phone away from home, downloads a recording, uploads diagnostic information, checks for firmware updates, or connects to a web portal. A local-storage camera may continue recording during an internet outage, although remote access and alerts may pause until the connection returns.

The question how much data does a wireless security camera use is therefore different from asking how much traffic passes through the home router. Wi-Fi describes the local connection. Only traffic that crosses the broadband connection or mobile network contributes to an external data allowance.

Why Does Security Camera Data Usage Matter?

Most UK fixed-broadband packages are sold with generous or unlimited data, but bandwidth and mobile allowances still matter. Cameras compete with video calls, streaming, gaming, and other connected devices, and remote properties may depend on a metered 4G or 5G plan.

Home Broadband Speed and Data Caps

A camera mainly needs upload capacity because it sends footage from the property to an app or cloud service. A connection can have a fast download headline but a much lower upload rate. Before planning several cloud-connected cameras, check the upload speed available at your address and leave enough headroom for everyday use.

If your provider applies a fair-use rule or a monthly cap, continuous cloud recording can reach it quickly. Even on unlimited broadband, a saturated upload connection may delay alerts, reduce live-view quality, or affect calls and remote work.

4G and 5G Connections for Remote Properties

Farms, gates, allotments, caravans, construction areas, and detached outbuildings may rely on a SIM rather than fixed broadband. In these settings, the monthly allowance and local signal are central to the buying decision. Ofcom lets users compare predicted 4G and 5G coverage by location before committing to a network.

A low-traffic 4G camera can be economical when it records events locally and sends only alerts or requested clips. Frequent live viewing, high sensitivity, roadside movement, wildlife, or long recordings can increase usage sharply.

Key Factors That Affect Security Camera Data Consumption

Two cameras with the same resolution can produce very different monthly totals. These settings and usage habits explain most of the variation in security cameras data usage.

Video Resolution and Frame Rate

Higher resolution stores more detail, while a higher frame rate captures more images each second. Both can raise the bitrate. A 4K stream at 15 frames per second may use less data than a poorly compressed 4K stream at 30 frames per second, so resolution alone is not enough to estimate usage.

Video Compression Format: H.264 vs H.265

Compression reduces file size by avoiding unnecessary repetition between frames. H.265 can usually deliver similar visual quality at a lower bitrate than H.264, although the saving varies by scene, lighting, movement, and camera implementation. A quiet entrance compresses more efficiently than trees, rain, traffic, or constant crowd movement.

Recording Mode: Continuous vs Motion-Triggered

Continuous recording creates video all day, so the active recording time is 24 hours. Motion-triggered recording may capture only a few minutes. A battery camera is usually event-based, while a mains-powered floodlight or NVR system may support continuous recording. This single choice often has the largest impact on the monthly total.

Local vs Cloud Storage

Local storage keeps recordings on the camera, microSD card, HomeBase, or NVR. The camera may still need internet access for alerts, thumbnails, remote live viewing, and downloaded clips, but it does not have to upload every second of footage. Cloud recording sends more video beyond the home network and therefore increases external usage.

Live Viewing and Video Downloads

Opening a live feed creates an active video stream. The longer you watch and the higher the selected quality, the more data you use on both the home upload and the phone download. Downloading several full-resolution clips can also outweigh the small amount used by routine text alerts.

Number of Connected Cameras

Monthly estimates are usually per camera. Four cameras continuously uploading at the same bitrate use roughly four times as much data and require four times the combined upload capacity. Shared areas may generate similar events on several cameras, increasing the total further.

How to Calculate Your Security Camera’s Monthly Data Needs

The most reliable estimate starts with the camera’s average bitrate and the number of hours it actually transmits video over the internet. When estimating how much data does a security camera use a month, use decimal gigabytes for a straightforward planning figure.

Monthly data (GB) = Bitrate (Mbps) × 3,600 × active hours per day × days per month ÷ 8 ÷ 1,000

For motion-triggered recording, convert the total recorded minutes into hours. Then add a margin of around 10–20% for thumbnails, connection overhead, live viewing, downloads, and variation in bitrate.

Worked Example

Assume one 1080p camera averages 1.5 Mbps and uploads two hours of motion clips each day. The calculation is 1.5 × 3,600 × 2 × 30 ÷ 8 ÷ 1,000 = 40.5 GB per month. Adding a 10% allowance gives about 44.6 GB. If the same camera uploaded continuously, the estimate would rise to 486 GB per month before overhead.

This is the clearest way to answer how much data does a Wi-Fi security camera use because it separates active transmission from time spent idle or recording locally.

Estimated Security Camera Data Usage by Resolution

The table below models continuous internet transmission for 24 hours a day over 30 days. It assumes H.265 or an efficient H.264 implementation, around 15 frames per second, and the listed average bitrate ranges. Real cameras may use more or less depending on movement, night noise, compression settings, audio, and scene complexity.

These are not expected totals for every home camera. A motion-triggered system that uploads only 10 minutes per day uses about 1/144 of the continuous-transmission figure before live viewing and overhead. Local recording can reduce internet usage further because stored footage does not leave the property until requested.

Practical Tips to Reduce Security Camera Data Usage

The best reductions come from sending less unnecessary video rather than lowering quality everywhere. Start with recording mode and detection accuracy, then fine-tune image settings only where needed.

Use Motion-Triggered Recording Where Appropriate

Event recording suits many doors, gardens, side passages, and low-traffic entrances. It avoids uploading hours of an unchanged scene. Continuous recording may still be appropriate for a shop, busy driveway, or area where the moments before an event are important.

Adjust the Resolution, Frame Rate, and Recording Length

Use the detail level needed for the scene. A narrow entrance where faces are close may not need the same bitrate as a long driveway. Reducing the frame rate or shortening each post-event recording can lower data use without making alerts less useful.

Use Activity Zones and Intelligent Detection

Exclude roads, pavements, moving trees, and neighbouring areas where possible. Person, vehicle, or pet detection can reduce clips caused by rain, shadows, insects, and foliage. Better filtering lowers both notifications and unnecessary uploads.

Choose Local Storage Over Cloud

Local storage is the most direct way to reduce continuous external transmission. Remote access still uses data when you open a clip or live view, but routine recordings remain inside the system. Keep storage capacity, encryption, backup needs, and device security in mind rather than choosing solely on data use.

Recommended eufy Cameras for Manageable Data Usage

Security cameras with local storage, on-device detection, activity controls, and event-based recording can keep monthly internet use more predictable. The right model depends on whether you need wide local coverage, wire-free installation, continuous driveway recording, or a mobile connection for an off-grid site.

eufyCam S4: Best for Advanced Local Home Security

For a larger home where one mounting point needs both an overview and close tracking, eufyCam S4 combines a 4K fixed wide-angle camera with a lower dual-lens 2K PTZ camera. It stores footage locally, runs person, vehicle, and pet detection on the device, and supports activity zones. That combination helps limit irrelevant event uploads while keeping detailed footage available locally.

The most relevant settings for data planning are local storage, efficient encoding, and filtered event detection.

• Storage: 32 GB built in, expandable to 256 GB with a microSD card; HomeBase S380 can expand storage further.
• Encoding and frame rate: H.264 or H.265 at up to 15 fps.
• Detection controls: Person, vehicle, and pet alerts, plus two activity zones; 24/7 recording requires direct power.

SoloCam S340: Best for Wire-Free Outdoor Monitoring

For a garden, side entrance, or driveway where cabling is inconvenient, SoloCam S340 uses a rechargeable battery and removable solar panel.

It records motion events rather than supporting 24/7 recording, stores footage in built-in local memory, and performs human and vehicle detection on the device. This event-led design can keep data use closer to the lower end when the scene is configured carefully.

Its battery-based recording limits continuous transmission and focuses data use on detected events and remote access.

• Video: 3K wide-angle and 2K telephoto views with 8× hybrid zoom.
• Storage: Built-in 8 GB eMMC, with optional HomeBase S380 compatibility.
• Recording and power: Motion-triggered recording, local human and vehicle detection, rechargeable battery, and a removable 2.2 W solar panel.

Floodlight Camera E340: Best for Continuous Driveway and Entrance Monitoring

For a busy driveway or entrance where missed moments matter more than minimising every gigabyte, Floodlight Camera E340 can record continuously to local storage. Its dual cameras, AI tracking, and local microSD or HomeBase storage mean 24/7 footage does not need to be uploaded continuously to the cloud. Internet usage then depends more on notifications, remote viewing, and downloaded clips.

This mains-powered option is suited to users who want continuous local coverage while keeping cloud transmission optional.

• Video: 3K wide-angle camera and 2K telephoto camera with 8× hybrid zoom.
• Storage: 24/7 local recording with a microSD card up to 128 GB or HomeBase S380.
• Connection and detection: Dual-band 2.4/5 GHz Wi-Fi 6, 360° coverage, and AI tracking for people and vehicles.

4G LTE Cam S330: Best for Off-Grid Locations Using Mobile Data

For a gate, farm building, caravan, or worksite without dependable broadband, 4G LTE Cam S330 can connect through 4G or Wi-Fi and automatically select a compatible UK mobile network through the included SIM.

It records motion events, supports local expandable storage, and uses solar charging with a 9,400 mAh battery. This makes it easier to plan a mobile allowance than a camera that uploads continuously.

• Connectivity: 4G and Wi-Fi with automatic network selection and UK nano-SIM support.
• Video and coverage: 4K colour video, 360° pan-and-tilt viewing, and AI tracking for people and vehicles.
• Example data use: Around 700 MB per month for 10 daily live views of 10 seconds and 25 daily motion recordings of 10 seconds; actual usage varies.

Conclusion

How much data does a security camera use a month depends mainly on bitrate and the time video is transmitted over the internet. A locally recording, motion-triggered camera may use only a small allowance, while continuous 2K or 4K cloud transmission can consume hundreds of gigabytes or several terabytes.

Calculate each camera separately, include live viewing and overhead, check the available upload speed, and use local storage and accurate detection to control security cameras data usage without sacrificing the footage that matters.

FAQs

How Much Internet Data Does CCTV Use per Month?

One motion-triggered camera may use under 1 GB to a few dozen gigabytes, while one continuously uploaded 1080p stream may use roughly 324–648 GB under the assumptions in this guide. Local NVR recording does not automatically count as internet usage.

How Many GB Is 24 Hours of CCTV?

At an average bitrate of 1 Mbps, 24 hours is about 10.8 GB. At 2 Mbps, it is about 21.6 GB; at 4 Mbps, about 43.2 GB. Multiply the bitrate in Mbps by 10.8 for an approximate daily figure in decimal GB.

Do Home Cameras Use a Lot of Wi-Fi?

They can create substantial local Wi-Fi traffic, especially with several high-resolution streams. That traffic does not all become internet usage when recordings stay local. A strong router signal and enough upload capacity are still important for reliable remote access.

Do 4G Cameras Need a SIM Card?

Yes. A cellular camera needs a compatible SIM or eSIM and an active mobile data plan unless it is operating on Wi-Fi. Check network bands, local coverage, and whether the included SIM can switch between UK networks.

How Many Cameras Can My Broadband Handle?

Add the maximum simultaneous upload bitrate of every camera, then leave headroom for other users and devices. For example, four cameras averaging 2 Mbps each need about 8 Mbps of upload capacity when all are transmitting at once. A weak Wi-Fi signal can still cause problems even when the broadband package is fast enough.

Does Security Camera Use a Lot of Data When I Only Check Alerts?

Usually not. Text alerts use very little data, while thumbnail alerts use more but remain small compared with full clips. The larger increases come from opening live views, downloading recordings, or enabling continuous cloud upload.