How Much Storage Do You Need? Phone, Photos & 4K Video (2026)
"Is 128GB enough, or should I get 256GB?" It's the question on every phone, laptop, SD card and SSD purchase. The honest answer depends on what you store — so here are real numbers (and a calculator to do it for you).
Rough rules of thumb
- Photos: a modern phone photo is ~3–5 MB, so 1GB ≈ 250 photos. 128GB holds tens of thousands.
- Music: a song is ~4–8 MB; 1GB ≈ 200 songs.
- 1080p video: ~1.5 GB per hour. 4K video: ~7 GB per hour — this is the big one that fills phones fast.
Want exact numbers for any drive or card? Our free Storage Calculator shows how many photos, songs and hours of 1080p/4K fit on any capacity.
How much should you buy?
- 128GB: fine for a light user who streams music/video and keeps photos in the cloud.
- 256GB: the comfortable default for most phones in 2026 — lots of photos, some offline media.
- 512GB–1TB: if you shoot 4K video, keep a large offline library, or use it for work files.
- External SSD / NAS: once you're past a few TB of photos and video, move to an external drive or a home network NAS for backups.
Don't forget the 3-2-1 backup
Whatever you buy, keep 3 copies, on 2 types of media, 1 off-site (cloud counts). Storage fails; backups are what save your memories.
Frequently asked questions
Is 128GB or 256GB enough for a phone?
128GB is fine if you stream music and video and keep photos in the cloud. 256GB is the comfortable 2026 default for most people. Choose 512GB–1TB if you shoot 4K video or keep large offline libraries.
How much storage does 4K video use?
Roughly 7GB per hour of 4K video (versus about 1.5GB per hour for 1080p) — which is why 4K recording fills phones and cards quickly.
How many photos fit on 1GB?
About 250 modern smartphone photos per gigabyte (at ~3–5MB each), so even 128GB holds tens of thousands.
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