We tested Google Drive, Dropbox, and OneDrive with the same 15GB of files — uploading, downloading, sharing, and collaborating. Here's the honest breakdown of what you actually get on the free plan.
Free Storage at a Glance
| Service | Free Storage | File Size Limit | Offline Access |
|---|---|---|---|
| Google Drive | 15 GB | 5 TB (paid) | Yes |
| Dropbox | 2 GB | 50 MB (free) | Yes |
| OneDrive | 5 GB | 250 GB | Yes |
Google Drive: Best All-Round Free Option
Google Drive wins on free storage — 15GB versus Dropbox's 2GB or OneDrive's 5GB. For most users, 15GB is enough to store documents, PDFs, spreadsheets, and even a small number of photos.
What works well:
- Google Docs, Sheets, and Slides don't count toward your storage limit — only files you upload do
- Excellent Google Search integration — searches file contents, not just file names
- Seamless on Android — automatic backup is built into every Android phone
- Google Workspace collaboration (comments, suggestions, real-time editing) is best in class
What doesn't:
- 15GB fills up faster than expected once Gmail and Google Photos are included
- Desktop sync app is slower than Dropbox's
- Storage cannot be expanded on the free plan — you must pay for Google One
Dropbox: Best for Sharing and Reliability
Dropbox's 2GB free plan sounds tiny, but it has the best sync reliability of the three. Files appear on other devices faster, the desktop experience is polished, and link sharing works flawlessly.
What works well:
- Block-level sync — only changed parts of a file sync, not the whole file
- Paper (collaborative documents) is clean and simple
- The most reliable sync across slow/unstable connections
- Excellent third-party integrations (Slack, Zoom, Trello)
What doesn't:
- 2GB is essentially unusable for actual file storage in 2026
- Even basic features like offline access require the paid plan
- Significantly more expensive per GB than competitors
OneDrive: Best for Windows Users
OneDrive comes pre-installed on Windows 10 and 11, and integrates deeply with Microsoft Office. If you use Word, Excel, or PowerPoint regularly, OneDrive is the most seamless choice.
What works well:
- Built into Windows — no installation needed
- Auto-saves Office documents in real time
- Microsoft 365 subscribers get 1TB storage included
- Personal Vault feature adds extra encryption for sensitive files
What doesn't:
- 5GB free is limited compared to Google Drive's 15GB
- Sync can be unreliable on macOS
- Confusing interface — files vs Photos vs backup paths are unclear
Our Recommendation
How to Get More Free Storage (Legitimately)
- Google One: 100GB for $2.99/month — the best value paid upgrade
- Free bonus storage: Some Android phones come with extra Google One storage as a promotion (check Settings → Google → Storage)
- Student accounts: Many universities offer unlimited Google Drive storage through Google Workspace for Education — check with your institution