How Much Data Does Streaming Use? Watching and Broadcasting

An hour of streaming at a total bitrate of 3 Mbps uses around 1.35 GB of data, while 6 Mbps uses around 2.7 GB. Data usage depends primarily on bitrate and duration. Whether you are watching a live stream or broadcasting your own, these figures help you plan your data allowance. A four-hour broadcast at the higher bitrate adds up to 10.8 GB before transmission overhead (typically a few percent) and other network traffic.

For viewers, the quality selected in the player matters. For creators, broadcasting software settings and the number of outgoing streams also count. A long poker or casino stream on CasinoStreamers can take up a substantial part of your allowance. The calculations below will help you estimate what you need for an evening or an entire month, whichever side of the broadcast you are on.

How Many GB Does an Hour of Streaming Use?

Bitrate measures the amount of data transferred per second. Resolution, frame rate, and compression affect the bitrate needed, so two 1080p streams do not necessarily use the same amount of data. YouTube’s documentation provides different settings based on resolution, frame rate, and codec.

The table below shows calculations for example settings with a constant combined video and audio bitrate. These are not fixed data usage figures for 480p, 720p, or 1080p.

The formula is simple: bitrate in Mbps × 0.45 × hours = data usage in GB. We use decimal gigabytes, meaning 1 GB equals 1,000 MB. The result covers the media stream itself, excluding transmission overhead, ads, and other apps.

Do not confuse Mbps with MB/s. The first means megabits per second, while the second means megabytes per second. One byte contains eight bits, so overlooking the difference makes your calculation wrong by a factor of eight.

Watching in HD and 4K: Why Data Usage Varies

Platforms use different quality and compression settings. For comparison, Netflix lists usage of up to 1 GB per hour in SD, up to 3 GB in HD, and up to 7 GB in 4K with its High data usage setting. These figures apply to Netflix on one device. They are not a universal conversion for Twitch, Kick, or YouTube.

For live streams, check the quality options available in the player. YouTube creates different quality versions of an incoming broadcast so viewers can watch across various devices and connections. The broadcaster’s bitrate therefore does not necessarily match the bitrate each viewer receives.

When watching poker streams, finding the right quality means keeping the cards, amounts, and on-screen text readable. Lower the resolution only as far as you can without losing those details. On a small screen, 720p is a useful starting point to try on your own phone, but the actual data usage will vary.

Streaming Through OBS: Data Usage and Upload Speed

Broadcasting involves uploading video and audio, so you need sufficient upload speed. A large data allowance will not keep your stream running smoothly if your connection cannot sustain the selected bitrate. Kick recommends checking your upload speed before configuring your stream settings.

Your available upload speed should be comfortably above your combined video and audio bitrate. Around 30–50% headroom is often recommended as a starting point, although this is a practical guideline, not a fixed rule.

Suppose you set OBS to 6,000 kbps for video and 160 kbps for audio. That gives you a total of 6.16 Mbps, or approximately 2.77 GB per hour and 11.09 GB over four hours, before transmission overhead. Calculating usage from the video bitrate alone would leave out the audio.

This calculation applies to one outgoing stream. If your software sends several quality versions, add their bitrates together. Twitch’s Enhanced Broadcasting is one example of a system that supports multiple video versions.

How to Reduce Data Usage and Check Your Allowance

At 6 Mbps, streaming for two hours a day over 30 days uses 162 GB for the media alone. A 100 GB allowance would theoretically cover around 37 hours at that bitrate, but other apps will use some of that data too. When planning for the month, account for all traffic on the connection.

Start with a few adjustments:

• Select the quality manually. Check whether a lower resolution still gives you a comfortable viewing experience.

• Close extra video players. A muted stream may still download video. Muting it does not stop the stream.

• Lower your broadcast bitrate. Reducing the resolution while keeping the same constant bitrate will not significantly reduce data usage.

• Check what your Wi-Fi connects to. A laptop connected to your phone’s hotspot still uses your mobile data allowance.

Before a long session, close other internet-connected apps and note the data usage shown by your phone or router. Run the stream for 15 minutes, check the difference, and multiply it by four to estimate hourly usage at those settings.

Some devices count in binary units (GiB) even when they label them GB, which can make the reading about 7% lower than the same amount expressed in decimal GB. Keep that distinction in mind and use your measurement as a starting point for planning the full session.