Quick answer: the biggest free cloud storage tier in 2026 is TeraBox at 1 TB, but it is ad-supported with heavy speed caps. The largest free plan without those strings is MEGA at 20 GB, followed by Google Drive at 15 GB shared across Gmail and Google Photos. pCloud and Icedrive give 10 GB, OneDrive, iCloud, Proton Drive and Sync.com give 5 GB, and Dropbox trails at 2 GB. Every tier below is listed with the limit its provider does not put in the headline. Checked July 31, 2026.
| Provider | Free tier | The catch |
|---|---|---|
| TeraBox | 1 TB | Ads, speed caps, download limits |
| MEGA | 20 GB | Dynamic bandwidth limits on sharing |
| Google Drive | 15 GB | Shared with Gmail and Google Photos |
| pCloud | 10 GB | Part unlocked via referral steps |
| Icedrive | 10 GB | Daily bandwidth limits |
| OneDrive | 5 GB | Fills fast on Windows defaults |
| iCloud | 5 GB | Consumed by device backups |
| Proton Drive | 5 GB | Privacy focus over capacity |
| Sync.com | 5 GB | Slower apps, strong encryption |
| Dropbox | 2 GB | Smallest major free plan |
TeraBox: the 1 TB headline and its fine print
No free tier comes close to TeraBox’s 1 TB on paper. In practice the free plan is monetized aggressively: ads throughout the apps, throttled download speeds, limits on large-file downloads and video quality. It works genuinely well as a deep freezer for data you rarely retrieve, and badly as an active drive. Treat it as free cold storage with a slow door, and keep anything you need quick access to elsewhere.
MEGA: 20 GB with a transfer meter
MEGA’s 20 GB is the largest clean free tier, protected by end to end encryption by default. The limit you hit is not space but transfer: free accounts get a dynamic bandwidth quota that varies with network load, and sharing-heavy use can pause downloads until the quota refreshes. For personal archives it is excellent. As a distribution channel for files you share widely, the meter bites.
Google Drive: 15 GB, shared three ways
Google’s 15 GB is the most usable free tier because of what surrounds it, but the same 15 GB pool absorbs Gmail attachments and Google Photos uploads. A decade-old Gmail account plus a phone backing up photos can consume it without a single file uploaded to Drive. Check the storage breakdown before assuming you have room; many “Drive is full” complaints are actually Photos.
The 10 GB tier: pCloud and Icedrive
pCloud starts lower and unlocks the full 10 GB through verification and referral steps, then distinguishes itself with excellent media streaming from the free tier. Icedrive gives a clean 10 GB with a modern interface and daily bandwidth ceilings. Both are strong picks for a dedicated free archive that is separate from your email ecosystem.
The 5 GB tier: OneDrive, iCloud, Proton, Sync.com
Microsoft and Apple use 5 GB as an on-ramp to paid plans, and device defaults consume it quickly: Windows likes syncing Desktop and Documents into OneDrive, and iPhone backups eat iCloud. Proton Drive and Sync.com aim their 5 GB at privacy: both apply zero-knowledge encryption, meaning the provider cannot read your files even under compulsion. Small tiers, but the right home for documents that actually need protecting.
Stacking free tiers: worth it?
Adding every tier above yields roughly 1.08 TB of free space across ten accounts, and people do run this. The costs are real: ten logins and recovery emails, files scattered across incompatible apps, per-service bandwidth rules, and dormant-account deletion policies that can silently expire an archive you forgot to touch. A workable middle path is two or three tiers with clear roles, for example MEGA for private archives, Google for documents, TeraBox for cold storage. Past that point, math favors paying: 2 TB at $4.17 per TB on the pricing index costs about $100 a year and replaces the entire juggling act with one drive.
Why free tiers exist
Free storage is customer acquisition. Providers know a meaningful share of users will outgrow the tier and convert, that ecosystems like Google’s and Apple’s monetize you elsewhere, and that ad-supported models like TeraBox’s monetize you directly. None of this makes free tiers bad deals; it explains their shapes. The generous ones either throttle the exit, sell your attention, or bet on conversion. Knowing which game a provider is playing tells you how safe your data’s terms are long term.
Free cloud storage FAQ
What is the most free cloud storage you can get from one provider?
TeraBox at 1 TB, with significant speed and download restrictions. The largest unrestricted-capacity tier is MEGA’s 20 GB, subject to transfer quotas.
Is free cloud storage safe?
The major providers listed here are legitimate businesses with real security teams. The practical risks are policy, not hacking: bandwidth limits, dormancy deletion, and terms changes. For sensitive files, prefer the zero-knowledge options, Proton Drive, Sync.com or MEGA.
When should I stop stacking and pay?
When your data matters enough that scattering it hurts, or you pass roughly 50 GB of active files. At about $100 a year for 2 TB, paid plans cost less than the time free-tier juggling consumes.
The best free tier for each job
For photos, Google’s 15 GB with Google Photos integration is the most usable free arrangement, with iCloud’s 5 GB filling the same role for iPhone users until backups outgrow it, which happens fast. For a private document vault, Proton Drive or Sync.com, where zero-knowledge encryption is the point and 5 GB comfortably holds paperwork that matters. For a big personal archive you touch monthly, MEGA’s 20 GB. For a cold dump of large files you may never fetch, TeraBox’s 1 TB, accepted with its throttles as the price. For sharing files with other people, Google or Dropbox, whose link workflows recipients already understand. Matching tier to job beats maximizing gigabytes: the best free setup is usually two providers with clear roles rather than one stretched thin.
Keeping free accounts alive
Free tiers carry dormancy policies. Providers reserve the right to delete inactive free accounts, with inactivity windows commonly between one and two years, and enforcement has tightened industry-wide as storage costs get audited. The defenses are mundane: sign in to each account at least twice a year, keep the recovery email current, and note which email owns which account somewhere you will find it. An archive you cannot log into is already lost; an archive on an account flagged dormant is merely lost on a schedule. This maintenance overhead is a real cost of stacking tiers, and it compounds with every account added, which is a fair part of why the paid consolidation math on the pricing index wins earlier than pure gigabyte arithmetic suggests.
Free tiers as trial runs
The underrated use of free tiers is auditioning the paid product. Sync speed on your connection, app quality on your devices, how sharing behaves for your recipients: all of it shows on the free plan before money moves. Upload a few gigabytes, restore them, share a link, and time it. Fifteen minutes of testing across two or three free tiers tells you more than any review, ours included, because it tests your files on your network. The free tier that handles the audition best is almost always the right place to point your paid upgrade when the time comes.
File size limits and other free tier walls
Capacity is not the only wall on a free plan. Individual file size caps bite before space does for video and disk-image work: free tiers commonly restrict single uploads to a few gigabytes through browser upload paths, with desktop clients often allowed more. Sharing walls follow: link traffic caps, download limits per link, and expiring links on free accounts turn a generous archive into a poor distribution channel. Device limits appear too; Dropbox restricts free accounts to three linked devices, a wall that arrives the day you add a work laptop. None of these appear in the headline gigabyte number, which is why our table above tracks the catch column as carefully as the capacity column. Test your actual largest file and your actual sharing pattern during the audition; walls you hit in minute ten are better than walls you hit with your archive already resident.