Short answer
YouTube data use depends almost entirely on video resolution. At 480p you will use roughly 300 MB per hour; at 1080p roughly 1.5 GB per hour; at 4K up to 3 GB per hour. Capping quality is the single most effective way to stream on a travel plan without running out.
Data per hour by resolution
| Resolution | Approximate data per hour |
|---|---|
| 144p (lowest) | ~80–100 MB |
| 240p | ~150 MB |
| 360p | ~250 MB |
| 480p (SD) | ~300–500 MB |
| 720p (HD) | ~900 MB–1.2 GB |
| 1080p (Full HD) | ~1.5–2 GB |
| 1440p (2K) | ~2.5 GB |
| 2160p (4K) | ~3–7 GB |
| Audio only / music in background | ~50–100 MB |
Higher frame rates matter too: 1080p at 60 fps uses roughly 50% more than 1080p at 30 fps.
Why YouTube quietly eats travel plans
The default setting is "Auto", which picks the highest quality your connection can sustain. On a fast 5G travel eSIM, Auto will happily stream 1080p or higher — meaning a single evening of watching can consume several gigabytes.
Cap your quality before you travel
In the YouTube app:
- 1Tap your profile picture > Settings > Video quality preferences.
- 2Set Video quality on mobile networks to *Data saver* (or "Higher picture quality" only when you have a large plan).
- 3Leave Wi-Fi on Auto.
You can also override per video: tap the three dots > Quality > Advanced > pick 360p or 480p.
Other settings that help:
- Turn off Playback in feeds on mobile data — autoplaying previews as you scroll add up fast.
- Turn off Autoplay next video so a session does not run for hours unattended.
- Disable background play over cellular unless you specifically want audio-only.
Download for offline viewing
YouTube Premium allows downloads. Download on hotel Wi-Fi at the quality you want and watch offline with zero mobile data. A 1-hour 480p download is roughly 300–400 MB.
Other streaming services for comparison
| Service | Approximate per hour (HD) |
|---|---|
| Netflix | ~3 GB (HD), ~7 GB (4K) |
| Spotify (high quality) | ~150 MB |
| Instagram scrolling | ~600 MB–1 GB |
| TikTok | ~800 MB–1 GB |
How much data should I buy?
| Your usage | Suggested plan |
|---|---|
| No streaming — maps, chat, email | 1 GB per week |
| Occasional short videos at 480p | 3 GB per week |
| An hour of 480p–720p video most evenings | 10 GB per week |
| Regular HD streaming or hotspot to a laptop | 20 GB or unlimited |
Set Data saver before you fly and a modest plan goes a long way. Compare data plans for your destination.