144p — About 30–90 MB per Hour: 144p is YouTube’s lowest common quality setting and uses the least data. It can consume roughly 30–90 MB per hour, making it useful when mobile data is limited. Actual usage varies with bitrate, codec, video content, and buffering.
240p — About 180–250 MB per Hour: 240p provides slightly clearer video than 144p while keeping data consumption relatively low. Streaming can use around 180–250 MB per hour, although fast-moving videos may require more data than simple talking-head content.
360p — About 300–450 MB per Hour: 360p offers a noticeable improvement over lower resolutions without consuming too much data. Typical estimates put usage around 300–450 MB per hour, making it suitable for casual viewing when conserving a mobile data allowance.
480p — About 480–660 MB per Hour: 480p is an SD quality option that provides sharper images than 360p. It can consume roughly 480–660 MB every hour, with actual usage changing according to video bitrate, frame rate, codec, and content complexity.
720p — About 0.7–1.5 GB per Hour: 720p HD requires considerably more data than standard-definition options. Estimates range from around 0.7 GB to 1.5 GB per hour, while higher frame rates can increase consumption further.
1080p — About 1.5–3 GB per Hour: 1080p Full HD delivers sharper details but can use substantially more mobile data. Typical estimates range from about 1.5 GB to 3 GB per hour, with 60fps playback generally consuming more than 30fps video.
1440p and 4K — About 2.5–10+ GB per Hour: Higher resolutions can quickly increase data consumption. 1440p may use several gigabytes hourly, while 4K can reach roughly 5–10 GB or more depending on bitrate, frame rate, codec, and video content.
Note: YouTube does not publish a fixed data-consumption figure for every playback resolution. Actual usage changes with codec, frame rate, video complexity, audio, buffering, and device settings.