Camera & setup
How Much Data Does a Video Call Use? Ranges, Checks and Savings
How much data a video call uses depends mostly on the video quality your connection can hold. As a rough guide, a one-to-one call uses somewhere around 200 MB to 2 GB per hour, counting what you send and what you receive. Full HD can go well past that, and audio-only uses a small fraction.
Those are ballpark figures, not measurements of any particular app. Below you'll find what drives the number up or down, how to measure your own calls in a few minutes, and practical ways to save data on video calls.
Video call data per hour: rough ranges
Video calls are two-way traffic. Your phone uploads your camera feed and downloads the other person's at the same time, and your carrier counts both directions against your plan.
| Call quality | Rough bitrate each way | Rough data per hour (both directions) |
|---|---|---|
| Audio only | 30–100 kbps | About 25–100 MB |
| Low video (around 240p–360p) | 0.25–0.6 Mbps | About 200–550 MB |
| Standard video (around 480p–720p) | 0.8–2 Mbps | About 0.7–1.8 GB |
| Full HD video (1080p) | 2.5–4 Mbps | About 2–3.5 GB, sometimes more |
Want to convert any bitrate yourself? 1 Mbps sustained for an hour is about 450 MB. Multiply the bitrate in each direction by 0.45, add the two together, and you have gigabytes per hour.
A quick planning example: with 5 GB of mobile data left this month, a call at standard quality might last roughly three to seven hours before you run out. In full HD, it's more like one and a half to two and a half.
Real calls rarely sit at one quality. Treat the table as a range to plan around and measure your own usage with the test further down.
What drives video chat data usage up or down
- Resolution and frame rate. More pixels and more frames per second need more bits. This is the biggest single factor.
- Your connection. Browser video chats use WebRTC, which keeps adjusting quality to the bandwidth available. On a weak signal the call drops to lower quality and uses less data, which is also why it can look blurry.
- Movement and detail. Video compression mostly sends what changed between frames. A busy background, a moving camera or a dim, grainy room all cost extra bits.
- Minutes on camera, not matches. Setting up a new connection takes very little data. What adds up is the time video is flowing in both directions.
- Camera on or off. Turning your camera off stops your upload, and switching to text cuts usage to almost nothing.
Does a relayed connection use more data?
Barely. Most browser calls try a direct, peer-to-peer connection first. When that isn't possible, the call is relayed through a server, but your phone still sends and receives roughly the same video, plus a small amount of overhead. Omlet works this way: calls go peer-to-peer and are relayed through Omlet's network provider only when a direct path isn't possible. Read more about how peer-to-peer video chat works.
How to check your real usage
Your phone already tracks data per app. Because browser-based video chat runs inside your browser, look for Safari, Chrome or whichever browser you use. Menu names may differ slightly by version and phone brand.
iPhone
Go to Settings → Cellular (called Mobile Data in some regions) and scroll down to the list of apps. The figure next to each app counts usage since the statistics were last reset, which is shown at the bottom of the page.
Android
Go to Settings → Network & internet (or Connections on Samsung) → Data usage or App data usage, then tap your browser. Many phones also let you set a data warning and limit on the same screen. If you use Omlet on an Android phone, Chrome is the line to watch; see Omlet on Android for setup.
Run a 10-minute test
- Turn off Wi-Fi so the call uses mobile data.
- Write down your browser's current mobile data figure.
- Make a 10-minute video call the way you normally would.
- Check the figure again and subtract. Multiply the difference by six for an hourly estimate.
How to save data on video calls
- Use Wi-Fi whenever you can. Home Wi-Fi doesn't count against your mobile plan, unless that Wi-Fi is itself a phone hotspot.
- Watch for automatic switching. iPhone's Wi-Fi Assist (at the bottom of the Cellular settings page) and similar Android options can quietly move a call onto mobile data when Wi-Fi is weak. Turn them off if your plan is tight.
- Turn your camera off when you just want to talk. On Omlet you can switch your camera off, and with no camera you can still chat by text, which uses almost no data.
- Close other streaming tabs and apps. Music, video and game downloads all compete for the same data.
- Pause photo and cloud backups over mobile data so they don't run in the background during a call.
- Turn on Low Data Mode or Data Saver. On iPhone it's under Settings → Cellular → Cellular Data Options (names vary by carrier and network); on Android, look for Data Saver in Network & internet settings. These mainly limit background activity and may not lower the call's own quality.
Tethering a laptop to your phone's hotspot uses your mobile data too, and laptops often send higher-quality video than phones. Keep an eye on usage if you chat from a laptop that way.
Data, quality and battery: the trade-offs
Lower quality saves data and usually battery as well, because there's less video to encode, send and decode. Our guide on why video calls drain your battery covers the power side.
If your video looks choppy even though you have data to spare, the problem is usually the connection rather than your plan. Fixing a lagging video chat walks through those causes.
A sharper webcam doesn't automatically mean a bigger bill, either. The call's bitrate is set by the browser and your connection, so a 4K webcam rarely sends 4K video. See how to choose a webcam for what actually matters on camera.
Once you know your numbers, you can start a random video chat on Wi-Fi or mobile data with a clear idea of what each hour costs your plan.