Moving from Backblaze B2 to Cloudflare R2
A cost comparison and planning checklist. These are assessment steps, not vendor-specific migration instructions.
Backblaze B2
Hot object storage with free egress up to three times storage.
$2.63 / month
Pay as you go
Official pricing · Checked 2026-10-05
Cost breakdown and exclusions
- Monthly subscription: $0
- Stored data (10 included): $0.63
- Egress above 3× storage: $2.00
- First 10 GB free. Class A, B and C API calls are free on current pay-as-you-go pricing.
- Class D transactions, premium support and special partner egress discounts.
Cloudflare R2
S3-compatible object storage without direct egress charges.
$1.35 / month
Standard
Official pricing · Checked 2026-10-05
Cost breakdown and exclusions
- Monthly subscription: $0
- Stored data (10 included): $1.35
- Class A operations (1,000,000 included): $0
- Class B operations (10,000,000 included): $0
- Billable storage and operation units round up. Free allowances are shared across the account.
- Infrequent Access, migration services, connected Workers and other metered services.
Recurring cost difference
$15.36 lower over twelve months at unchanged usage.
Not calculated. Estimate migration labor, overlapping subscriptions, transfer charges and contract obligations before dividing those costs by any monthly savings.
What this comparison covers
Standard hot storage in one region, direct API downloads without a separate CDN. No replication, archival retrieval, acceleration or special operation classes. GB are decimal. Bunny is suitable for API access; public CDN distribution has separate fees.
Evaluating 2 products from 3 published in this category. USD monthly equivalents, before tax. Features and service compatibility need separate evaluation.
- Average stored data
- 100 GB-month
- Data downloaded
- 500 GB / month
- Write and list operations
- 100,000 operations / month
- Read operations
- 1,000,000 operations / month
Before you move
- This is a readiness assessment, not a verified vendor migration procedure.
- Use the source pricing and plan documentation: https://www.backblaze.com/cloud-storage/pricing
- Use the target pricing and plan documentation: https://developers.cloudflare.com/r2/pricing/
- Obtain the account permissions, data-owner approvals and tested backups needed for your chosen transfer method.
Modeled recurring cost
Backblaze B2: $2.63/month
Cloudflare R2: $1.35/month
Cloudflare R2 costs $1.28 less per month than Backblaze B2 at this workload. This compares modeled charges, not overall product quality.
Requirements
Pay as you go
Standard
Check object metadata, access policies, signed URLs, request semantics and data-transfer charges; verify copied objects before removing originals.
Your migration readiness checklist
Check items as you review them. Progress is kept only while this page is open.
Questions before you decide
Does a lower monthly estimate mean the migration pays for itself?
Not calculated. Estimate migration labor, overlapping subscriptions, transfer charges and contract obligations before dividing those costs by any monthly savings.
Is this a guaranteed migration procedure?
No. This assessment identifies decisions to verify with official provider documentation. It does not establish interoperability, data portability, zero downtime or a rollback guarantee.