The Quick Answer: Netflix Data Usage by Quality
You're halfway through a commute, Netflix is open, and you've got no idea how fast your data allowance is disappearing. It's one of those things nobody tells you until your plan runs out mid-episode.
Here's the straightforward breakdown of how much data Netflix uses per hour, depending on the quality setting you're streaming at:
| Quality Setting | Data per Hour | Typical Use Case |
|---|---|---|
| Low | ~0.3 GB | Small screens, tight on data |
| Standard Definition (SD) | ~0.7 GB | Acceptable on phones and tablets |
| High Definition (HD) | ~3 GB | Default on most devices |
| Ultra HD (4K) | ~7 GB | Large screens, best quality |
Those numbers come straight from Netflix's own guidance. HD is the default for most accounts — which means a single two-hour film at HD quality burns through roughly 6 GB. That's your entire Spark plan gone in one sitting.
What That Means Month to Month
Let's make it practical. Say you watch Netflix on mobile every day — even just 30 minutes during a commute. Here's how the data adds up across a month:
| Daily Viewing | Quality | Monthly Data Used |
|---|---|---|
| 30 min/day | Low | ~4.5 GB |
| 30 min/day | SD | ~10.5 GB |
| 30 min/day | HD | ~45 GB |
| 1 hour/day | SD | ~21 GB |
| 1 hour/day | HD | ~90 GB |
That HD column is eye-opening. Streaming at full HD on mobile every day isn't realistic on a standard SIM-only plan — not unless you're on an unlimited tariff or you're very deliberate about where and how you stream.
The good news: you don't need HD to enjoy Netflix on a phone screen. More on that in a moment.
How Netflix Data Maps to Fuse's Plans
Fuse Mobile is a UK multi-network eSIM that connects your phone to all four UK networks — EE, Three, Vodafone, and O2 — automatically switching to whichever has the strongest signal. That's useful context for streaming: you're far less likely to buffer or drop quality mid-episode because your signal is always optimised.
But even with perfect signal, data allowance still matters. Here's how Netflix streaming fits across Fuse's three plans:
Spark — 5 GB/month (£5.99)
Spark is Fuse's entry-level UK-only plan. At 5 GB, you've got room for:
- Around 16 hours of Low quality streaming
- Around 7 hours of SD streaming
- Just over 1.5 hours of HD streaming
Spark works well for light users who mostly stream on Wi-Fi and only dip into mobile data for browsing, maps, and messaging. If Netflix on mobile is a regular habit, you'll want more headroom.
Pulse — 10 GB/month (£9.99)
Pulse is Fuse's most popular plan — and it's easy to see why. 10 GB gives you:
- Around 33 hours of Low quality streaming
- Around 14 hours of SD streaming
- Around 3.5 hours of HD streaming
For a commuter watching 20–30 minutes of Netflix a day at SD or Low quality, Pulse is a comfortable fit. It also includes roaming in 130+ countries, which is worth noting if you travel.
Surge — 15 GB/month (£14.99)
Surge gives you the most breathing room:
- Around 50 hours of Low quality streaming
- Around 21 hours of SD streaming
- Around 5 hours of HD streaming
If you stream regularly on mobile and don't want to think too hard about data, Surge is the sensible pick. Like Pulse, it includes international roaming — so your Netflix habits abroad won't catch you off guard either.
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How to Reduce Netflix Data Usage on Mobile
You don't have to choose between enjoying Netflix and keeping your data bill under control. A few simple habits make a significant difference.
1. Change Your Netflix Data Setting
Netflix lets you control data usage directly in the app. Go to App Settings → Cellular Data Usage and set it to Save Data or a specific quality level.
- Save Data drops usage to around 0.3 GB/hour — roughly the same as the Low setting
- Maximum Data pushes quality as high as your connection allows, which burns through data fast
On a phone screen, the difference between SD and HD is far less noticeable than on a TV. Dropping one quality level can halve your data consumption without meaningfully affecting your viewing experience.
2. Download on Wi-Fi Before You Leave
This is the single most effective trick for mobile Netflix users. Download episodes or films while you're connected to Wi-Fi at home, then watch them offline on the go — no mobile data required.
Netflix allows downloads on most plans. A standard SD episode of a 45-minute show uses around 500 MB when downloaded. Download four episodes before a long journey and you've got three hours of viewing without touching your mobile data at all.
3. Set a Data Warning on Your Phone
Both Android and iOS let you set a monthly data usage warning. Set it to 80% of your plan allowance and you'll get a nudge before you accidentally hit your limit — giving you time to switch to Wi-Fi or drop your streaming quality.
4. Watch on Wi-Fi Whenever You Can
Obvious, but worth stating: if you're at a café, hotel, or friend's place with Wi-Fi, use it. Save your mobile data for when you genuinely need it — when you're on the move and there's no alternative.
5. Check Your Netflix Plan Quality Cap
Netflix's own subscription tiers affect streaming quality too. The Standard with Ads and Standard plans cap at 1080p HD. Only the Premium plan unlocks 4K. If you're not on Premium, you can't accidentally stream 4K — so that 7 GB/hour figure isn't relevant to most people.
Why Signal Quality Matters for Streaming
Here's something worth understanding: it's not just about how much data Netflix uses — it's about whether your connection is stable enough to use it efficiently.
When your signal drops, Netflix buffers. To compensate, the app often drops to a lower quality setting automatically, then ramps back up when signal improves. That constant quality switching can actually increase data usage compared to a stable connection at a consistent quality level.
This is where multi-network coverage genuinely helps. Because Fuse connects to all four UK networks simultaneously — EE, Three, Vodafone, and O2 — your phone always has the best available signal, even in areas where one network has patchy coverage. Fewer drops, smoother streams, more predictable data usage.
If you want to understand how your overall data needs stack up — not just for Netflix, but for everything you do on your phone — our guide on how much mobile data you actually need in the UK is worth a read.
FAQ
How much data does Netflix use per hour in the UK?
Netflix uses approximately 0.3 GB/hour on Low quality, 0.7 GB/hour on SD, 3 GB/hour on HD, and 7 GB/hour on 4K Ultra HD. HD is the default setting on most devices, so expect around 3 GB per hour unless you've manually adjusted your data settings in the Netflix app.
Can I stream Netflix on a 5 GB mobile plan?
Yes, but you'll need to be selective. At SD quality (0.7 GB/hour), 5 GB gives you around 7 hours of streaming — enough for light use if you download content on Wi-Fi when possible. HD streaming at 3 GB/hour would exhaust a 5 GB plan in under two hours of viewing.
Does Netflix use data when downloading?
Yes — downloading an episode uses roughly the same amount of data as streaming it, depending on the quality you download at. The difference is that you choose when to use that data (ideally on Wi-Fi), rather than using mobile data in real time.
Which Fuse plan is best for Netflix on mobile?
For occasional mobile streaming at SD or Low quality, Pulse (10 GB, £9.99/month) is the sweet spot. If you stream daily or want more flexibility, Surge (15 GB, £14.99/month) gives you extra headroom. Both plans include roaming in 130+ countries, which is a bonus if you travel.
The Bottom Line
Netflix data usage ranges from manageable to eye-watering depending on quality — and HD on mobile eats through allowances faster than most people expect. Drop your quality setting, download on Wi-Fi, and choose a plan that actually matches how you use your phone.
If you're not sure which plan fits your lifestyle, compare Fuse's plans or start with a 7-day free trial to see how your data usage plays out in practice. The right plan is the one you don't have to think about.