Free tool
Cloud Egress Cost Calculator
Storage is cheap. Enter how much data you serve each month to see what egress actually costs.
| Provider | Est. monthly egress cost |
|---|---|
| Cloudflare R2 | Free |
| Backblaze B2 | $4.90/mo |
| Azure Blob Storage | $34.80/mo |
| Amazon S3 | $36.00/mo |
| Google Cloud Storage | $60.00/mo |
Pricing last checked 2026-07-07. Estimates only, first-tier rates — confirm current pricing on each provider's site before deciding.
Object storage pricing pages emphasize the cost per GB stored, which is usually a fraction of a cent. The number that surprises people later is egress — what you're charged for data leaving the bucket, whether that's users downloading files, a CDN pulling origin content, or backups being restored. For any storage-heavy, traffic-heavy app, egress is often the bigger line item.
This calculator compares estimated monthly egress cost across five providers for a given amount of data transferred out, including Cloudflare R2 and Backblaze B2 — both known for charging little or nothing for egress.
How to use it
- 01Enter how many GB of data you expect to transfer out per month.
- 02Compare the estimated monthly cost across providers, cheapest first.
- 03Remember this is first-tier, indicative pricing — check the provider's current pricing page for your exact region and volume.
Frequently asked questions
What is “egress” exactly?
Egress is data leaving a cloud provider's network — most commonly, files being downloaded by users, or a CDN or another service pulling data from your storage. It's billed separately from storage itself and separately from “ingress” (uploads), which most providers don't charge for.
Why do some providers charge little or nothing for egress?
Cloudflare R2 was built specifically to eliminate egress fees, and providers like Backblaze B2 offer very low egress rates (and often free egress when paired with a CDN partner like Cloudflare via the Bandwidth Alliance). Others price egress closer to their infrastructure cost, which is significantly higher.
Does this include storage cost too?
No — this tool estimates egress only. Use the Cloud Storage Price Comparison tool for storage cost estimates; the two are billed separately by every provider here.
Related tools
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