Free streaming data usage calculator: pick a service and quality to see GB used per hour of Netflix, YouTube, Disney+, Spotify and more.
Your results will appear here.
Enter your values and press Calculate.
Pick your streaming service and video quality, then enter how many hours you stream. The calculator looks up the service's typical GB-per-hour rate, taken from published figures such as Netflix's Help Center, and multiplies: GB used = rate × hours. For Spotify the rate is a flat audio figure of about 0.07 GB per hour no matter which quality option you pick, because music does not stream at video resolutions. Results show the data used in GB and MB, the rate applied, and a 30-day estimate assuming the same daily hours. These are planning estimates: services use adaptive bitrate, so real usage varies with your connection and what you watch.
Every streaming service has an average data rate per hour for each quality level, either published by the service or measured by independent testing. The calculation is a simple multiplication: data used in GB equals the rate in GB per hour times the hours you stream. Take Netflix in Full HD (1080p): the rate is about 3 GB per hour, so a 2-hour movie uses 3 × 2 = 6 GB. The calculator above does this automatically: it looks up the rate for your service and quality, then multiplies by your hours and converts the answer to both GB and MB.
These are the rates built into the calculator, in GB per hour. They come from published service figures (Netflix's Help Center and a per-service comparison table from Panda Security) and independent testing. Netflix: 480p 0.7, 720p 1.0, 1080p 3.0, 4K 7.0. YouTube: 480p 0.6, 720p 1.5, 1080p 2.5, 4K 5.5. Disney+: 480p 0.7, 720p 2.0, 1080p 2.0, 4K 7.7. Amazon Prime Video: 480p 0.38, 720p 1.4, 1080p 1.4, 4K 6.84. Hulu: 480p 0.65, 720p 1.35, 1080p 1.35, 4K 7.2. Max: 480p 0.7, 720p 2.25, 1080p 2.25, 4K 7.7. Peacock: 480p 0.7, 720p 1.1, 1080p 1.1, 4K 7.0. Spotify (music): flat 0.07 GB per hour at every quality option, because audio streaming does not use video resolutions. Independent testing has measured Netflix 4K anywhere from 6.5 to 11 GB per hour on action-heavy content, so treat the 4K figures as the typical case, not a ceiling.
One hour of Netflix in 480p uses about 0.7 GB. The same hour in 4K uses about 7 GB: ten times the data for the same show. In practical terms, one hour of 4K costs as much data as ten hours of SD. That is why lowering the quality setting is the single most effective way to stretch a mobile data plan. On a phone screen the difference between SD and HD is hard to spot, yet HD can use three to four times the data of SD.
Netflix publishes its own data usage figures. On web browsers the settings are: Low, up to 0.3 GB per hour; Medium, up to 0.7 GB per hour; High, up to 1 GB per hour in SD, 3 GB per hour in HD, or 7 GB per hour in 4K; and Auto, which adjusts to your connection speed. On the mobile app the options are Automatic (roughly 4 hours of viewing per GB), Save Data (about 6 hours per GB), Wi-Fi Only, and Maximum Data, which can use 1 GB every 20 minutes. Each profile on an account can carry its own setting, which is handy when one person streams on mobile data and another on home Wi-Fi.
Audio needs far less data than video. Spotify uses roughly 0.07 GB per hour at standard quality, and even high-quality audio stays under 0.15 GB per hour across music apps. Ten hours of Spotify is about 0.7 GB, less than 15 minutes of Netflix HD. That is why a music habit almost never breaks a data plan, while a video habit can break one in a single evening. The calculator applies the same 0.07 GB per hour audio rate whichever quality option you pick for Spotify, since music quality does not map to video resolutions.
Streaming services use adaptive bitrate: the app constantly changes the quality (and the data rate) to match your connection. A strong connection pulls the top rate; a weak one drops to a lower rendition and uses less data. Scene complexity matters too: action scenes and fast motion use more data than slow dialogue, and independent testing measured Netflix 4K between 6.5 and 11 GB per hour depending on content. So treat every figure on this page as a planning estimate, typically within 10 to 20 percent of reality, not a meter reading.
Example 1: a 2-hour movie on Netflix in Full HD. Rate 3 GB per hour × 2 hours = 6 GB. Example 2: how long does 1 GB last on Netflix HD? 1 / 3 = 0.33 hours, about 20 minutes. Example 3: 10 hours of Spotify at 0.07 GB per hour = 0.7 GB, about the same as 15 minutes of HD video. Example 4: a 30-day month of 2 hours of Disney+ HD daily: 2.0 GB per hour × 2 × 30 = 120 GB. Check your answer against your plan limit before assuming it fits.
Drop the in-app quality to standard definition on mobile data; on a phone screen it looks nearly identical and uses a tenth of the data of 4K. Download movies, episodes, and playlists over Wi-Fi and watch offline. Turn off autoplay so episodes and reels do not keep streaming after you stop watching. Use each app's data saver or low data mode, and restrict background data for streaming apps in your phone settings. Monitor usage with your phone's built-in data tracker so no app surprises you.
Streaming a title and downloading the same title at the same quality use roughly the same total data; the file is the same size either way. The difference is when the data moves. Downloading moves it once, up front, over Wi-Fi if you plan ahead. Streaming moves it continuously while you watch, and if you rewatch a scene or restart a show, the data transfers again. For capped mobile plans, downloading over Wi-Fi before you travel is the smarter move.
Pick your streaming service from the dropdown, for example Netflix. Pick the video quality you stream at, for example 1080p Full HD. Enter how many hours you stream, then press calculate. The tool shows the GB-per-hour rate it used, the data consumed in GB and MB, and a 30-day estimate assuming the same daily hours. For music, pick Spotify; the rate stays at the flat audio figure no matter which quality option is selected.
About 0.3 to 0.7 GB per hour at standard definition, 1 to 3 GB per hour in HD, and around 7 GB per hour in 4K, depending on the service. Netflix's own figures are 0.3 GB per hour on Low, 0.7 on SD, 3 on HD, and 7 on 4K. Pick your service and quality in the calculator above for an exact figure.
According to Netflix's Help Center: up to 0.3 GB per hour on Low, 0.7 GB per hour on Medium (SD), up to 1 GB per hour in SD on High, 3 GB per hour in HD, and 7 GB per hour in 4K. Real usage can drift 10 to 20 percent either way with adaptive bitrate and scene complexity.
Multiply the service's GB-per-hour rate by your hours: data used (GB) = rate × hours. For example, Netflix HD at 3 GB per hour for 2 hours gives 6 GB. The calculator above looks up the rate for your service and quality and does the multiplication for you.
No. Spotify uses roughly 0.07 GB per hour at standard quality, and music apps generally range from about 40 to 150 MB per hour depending on quality settings. Ten hours of music uses about as much data as 15 minutes of HD video, so audio rarely affects your plan.
For a typical 2-hour movie on Netflix: about 1.4 GB in SD (0.7 GB per hour), 6 GB in HD (3 GB per hour), and 14 GB in 4K (7 GB per hour). Other services are similar; check the rate table above for your service.
Roughly 0.7 to 1 GB per hour in SD, 1.5 to 3 GB per hour in HD, and 7 to 10 GB per hour in 4K. The range depends on the service and your connection, since adaptive bitrate adjusts quality on the fly.
Streaming apps use adaptive bitrate, changing quality moment to moment based on your connection, so real usage varies with network conditions and scene complexity (action scenes use more data than dialogue). Treat calculator figures as planning estimates, usually within 10 to 20 percent of the real number.
Lower the in-app quality to SD on mobile data, download content over Wi-Fi for offline viewing, turn off autoplay, enable each app's data saver mode, and restrict background data for streaming apps. Dropping from HD to SD alone can cut data use by more than two thirds.
Not for a single watch: the same title at the same quality uses about the same data either way. Downloading wins on capped plans because you can fetch it once over Wi-Fi and rewatch it free, while streaming re-transfers data every time you press play.
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