How much data YouTube uses per hour
What YouTube costs has almost nothing to do with what you watch and almost everything to do with the resolution the app picks for you — which you can pin down in three taps.
Quick answer
- YouTube uses roughly 0.3 GB an hour at 360p, roughly 1 GB at 720p and roughly 2 GB at 1080p.
- If you do not pin the quality, the app picks it from the speed it finds — so a stronger signal quietly costs you more.
- Set Video quality preferences to Data saver before you fly and the arithmetic for the whole trip changes.
YouTube uses roughly 0.3 GB an hour at 360p, roughly 1 GB an hour at 720p and roughly 2 GB an hour at 1080p — which means the same clip, at the same length, can cost nearly seven times as much without you noticing anything different. Every number here is a planning estimate rather than a measurement from your handset, and it shifts with the kind of footage too: a talking head costs less than a travel video where the camera never stops moving.
The thing most people get wrong is assuming they chose the resolution. By default the app chooses it, from the speed it measures at that moment. Land somewhere with a strong signal and it reads that as permission to serve you something sharper, and spends accordingly without asking. That is why a good-signal day can cost more than a sluggish one for exactly the same amount of watching.
Rough figures, quality by quality
| Quality | Roughly how much an hour | A 7-day trip at this rate |
|---|---|---|
| 144p, very coarse | Roughly 100 MB | 1 hour a day ≈ 700 MB |
| 360p, watchable on a phone | Roughly 300–400 MB | 1 hour a day ≈ 2.1–2.8 GB |
| 480p | Roughly 500–700 MB | 1 hour a day ≈ 3.5–4.9 GB |
| 720p, the common default | Roughly 0.9–1.5 GB | 1 hour a day ≈ 6.3–10.5 GB |
| 1080p | Roughly 1.5–2.5 GB | 1 hour a day ≈ 10.5–17.5 GB |
| 4K | Roughly 7–10 GB | Not something to do on a travel plan |
| Audio only, screen off | Roughly 50–100 MB | 2 hours a day ≈ 700 MB–1.4 GB |
| Shorts | Roughly 1–1.5 GB | 20 minutes a day ≈ 2.3–3.5 GB |
Every figure here is a planning estimate, not a measurement.
Read the table and you can see that the decision that matters happens once — when you choose what to pin the quality at — not each time you choose a video. The gap between 360p and 1080p is the gap between a trip with data left over and a trip that runs dry on day three, and on a six-inch screen the difference your eye notices is far smaller than the difference your plan notices.
Pinning the quality down for good
This is the single highest-value switch on this page. It takes under a minute and it applies to every video you watch for the rest of the trip. The path is the same on iOS and Android, which is a relief, because most apps are not like that.
- 1Open the settingsTap your profile picture at the top right, choose Settings, then open Video quality preferences.
- 2Set the mobile-network rowOpen On mobile networks and set it to Data saver if you want the cheapest option. Because the two rows are independent, you can still let it run at higher picture quality whenever you are on Wi-Fi at the hotel.
- 3Listen audio-only while you moveIf you are using YouTube for podcasts or music, pin it to 144p and put the phone in your pocket. Almost no picture gets pulled down and you are left with roughly 50–100 MB an hour of audio.
- 4Download on Wi-Fi before you leave the roomIf you have Premium, download the long stuff at the hotel, and in Settings > Downloads switch on Download over Wi-Fi only so the app never finishes a download over mobile data.
Shorts are their own category
Shorts do not always obey the same quality setting as ordinary videos, and because they play end to end with no gaps, their rate looks more like a short-video feed than like YouTube as you知 it — somewhere around 1–1.5 GB an hour. If Data saver is on and the data still seems to vanish, count the minutes you spend in Shorts before you look anywhere else.
- A reminder in Digital Wellbeing or Screen Time does more for your data than any quality setting, because the largest variable is simply how many minutes you watch.
- To avoid Shorts entirely, open videos from your Subscriptions tab or straight from a link rather than scrolling the home feed.
- Turn off Autoplay next video on the player screen so the app does not keep going after you put the phone down and doze off.
- Switch off Background App Refresh for YouTube on iOS, or Background data on Android, to stop it fetching while the app is closed.
How much to set aside for YouTube
It depends what YouTube is for on this trip. If it is background audio on a train or the walk back to the hotel, pin it to 144p and set aside roughly 1 GB for the week. If it is your main evening entertainment, pin it to 360p and set aside roughly 3–4 GB. If you pin nothing and let the app decide, budget at least roughly 10 GB and expect that it may still not be enough.
The most useful thing you can do is convert the gigabytes you have into hours you can actually watch, because "5 GB" tells nobody anything, while "roughly fourteen hours at 360p" tells you immediately whether it covers a seven-day trip.
FAQ
I pinned it to 360p and it still feels expensive — why?+
The usual cause is setting it inside a video instead of in Settings > Video quality preferences — the in-video choice applies to that video only. The other cause is time spent in Shorts, which often does not follow the same setting.
Does listening to music on YouTube cost the same as watching?+
No. Pinned to 144p with the screen off, almost no picture is sent and you are down to roughly 50–100 MB an hour, close to an ordinary music app. Leave the screen on at a high quality and you are still paying for a picture nobody is looking at.
Is downloading for offline really cheaper?+
Only if you download on Wi-Fi, or watch more than once. Download over mobile data and watch once and you have spent about what streaming would have cost. The real benefit of downloading is certainty — it plays in a metro tunnel with no signal at all.
An hour of YouTube a day for seven days — how many gigabytes?+
Roughly 2.1–2.8 GB at 360p, roughly 6.3–10.5 GB at 720p and roughly 10.5–17.5 GB at 1080p. Convert the gigabytes you are considering into hours before you decide on a size.
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