Best Online Backup for Mac in 2026: Complete Comparison

Mac backup in 2026 works across three distinct categories: local Time Machine backups to an external drive (free, fast), cloud backup services that continuously back up your entire Mac to remote servers (paid, offsite protection), and selective cloud sync services like iCloud Drive (good for current files, not a full backup). For true disaster recovery — fire, theft, drive failure — you need cloud backup. Here are the 7 best online backup services for Mac in 2026.

Quick comparison

1. Backblaze Personal Backup — best value unlimited

Backblaze Personal Backup is the simplest answer to "what's the best online backup for Mac". $9/month (or $99/year) backs up your entire Mac — unlimited storage, no file size limits. Continuous background backup, 30-day version history on the standard plan, extended history add-on available. Native macOS app, fast initial backup, and a unique "Restore by Mail" service (they ship your data on a USB drive if you need to recover fast). Best for: individual Mac users who want the cheapest unlimited cloud backup with minimal setup.

2. iDrive — best multi-device backup

iDrive lets you back up unlimited devices under one plan — ideal for households or small businesses with multiple Macs, iPhones, iPads and Windows PCs. Plans start at $79.50/year for 5 TB across all devices. 30-day versioning, snapshot history, physical disk shipment option. Best for: families or small offices with multiple devices to back up under one subscription.

3. Carbonite — continuous automatic backup

Carbonite runs continuous background backup — every time you save a file, it backs up immediately rather than on a schedule. Clean Mac app, easy restore interface, automatic external drive backup on higher tiers. Starting plan (250 GB) from $9.99/month; Plus (unlimited external drive backup) from $12.99/month. Best for: users who want true set-and-forget continuous backup without managing schedules.

4. Arq Backup — bring your own storage

Arq Backup is software-only ($49.99/year) that connects to your own cloud storage — Backblaze B2 (~$6/TB/month), Amazon S3, Wasabi, Google Drive, OneDrive, or a NAS on your network. Best overall cost if you already pay for B2 or S3 and want full control over where your data goes. 60+ days versioning, end-to-end encryption client-side. Best for: technically minded users who want maximum control over backup destination and encryption.

5. CrashPlan for Small Business — team backup

CrashPlan for Small Business is unlimited backup per device at $10/device/month — no consumer plan anymore, business only. Centralised admin console to manage all team Macs, indefinite file version history (not just 30 days), and compliance-friendly retention policies. Best for: small businesses, agencies and content teams with multiple Macs to manage centrally.

6. Apple iCloud — file sync, not a true backup

iCloud Drive (from $0.99/month for 50 GB, $2.99 for 200 GB, $9.99 for 2 TB) syncs your Desktop and Documents folders across all Apple devices — but it is NOT a full backup. If you delete a file on your Mac, it deletes from iCloud. If you get ransomware, it can spread to iCloud. For a proper backup, iCloud is not sufficient on its own. Use it alongside Time Machine and a cloud backup service like Backblaze. Best for: iCloud-native workflow complement, not a backup replacement.

7. Acronis Cyber Protect Home Office — hybrid backup + security

Acronis Cyber Protect Home Office (formerly Acronis True Image) combines local disk clone/image backup with cloud backup and active ransomware protection. From $49.99/year for 500 GB cloud + unlimited local backup. The active protection layer monitors for ransomware behavior in real-time and restores affected files automatically. Best for: users who want both offline and online backup with active ransomware defense in one product.

The 3-2-1 backup strategy for Mac

The standard backup rule: keep 3 copies of your data — 2 local (e.g. Mac internal + Time Machine external drive) + 1 offsite (cloud backup service). Time Machine handles the local versioning; Backblaze or iDrive handles the offsite disaster recovery. Together they cover hardware failure, accidental deletion, theft, and fire/flood scenarios.

Frequently asked questions

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