Cloud Egress Cost Calculator

Cloud egress cost calculator

✓ Last verified: 2026-07-15· Source: official provider pricing page· Auto-monitored — report change →

Moving data out of the cloud is one of the most surprising lines on a bill. Enter your monthly outbound GB and see exactly what AWS, Google Cloud, Azure, Cloudflare R2, Backblaze B2 and Wasabi charge — ranked cheapest first, with the zero-egress option highlighted.

Why egress is the cloud bill's quiet killer

Storing data is cheap. Moving it out is where the hyperscalers make margin. AWS, Google Cloud and Azure all charge roughly $0.08–$0.12 per GB of data sent to the public internet, after a small free allowance — while data coming in is free. Because egress scales with traffic, not storage, a viral file, a chatty API or a video workload can quietly add hundreds or thousands of dollars a month. The fix is almost always architectural: cache at the edge, compress responses, or move egress-heavy storage to a zero-egress provider.

Zero-egress providers change the math

Cloudflare R2 charges $0 for egress entirely, and Backblaze B2 gives very generous free egress (especially through its Cloudflare bandwidth-alliance partnership). For a 2 TB/month media workload that costs ~$180/mo on AWS, the same egress on R2 is $0. You still pay for storage and operations, but the line that grows with your success disappears. The trade-off is fewer regions and a smaller ecosystem — fine for static assets, downloads and media, less ideal if you're deeply tied to one cloud's services.

Cut egress before you switch clouds

Even on AWS or GCP you can slash egress: put a CDN in front so most bytes are served from cache (egress to a same-provider CDN is cheaper or free), gzip/brotli your API and HTML, serve modern image formats, and avoid chatty endpoints. Model the rest of your bill with the API stack cost calculator, size a download or storage API with the API request cost calculator, and read more in the API costs that double your bill.

Related tools & guides

API stack cost calculator · API alternatives finder · market-data APIs · free API tiers

Frequently asked questions

What is cloud egress and why does it cost money?

Egress is data leaving a cloud provider's network to the public internet — every file download, API response, image or video served to a user. Most big clouds charge per gigabyte of egress (often $0.08–$0.12/GB after a small free tier) while inbound data is free. It's one of the most surprising line items on a cloud bill because it scales with traffic, not storage.

Which cloud has the cheapest egress?

Cloudflare R2 and Backblaze B2 are dramatically cheaper than the hyperscalers: R2 charges zero egress fees, and B2 gives generous free egress. AWS, Google Cloud and Azure typically charge around $0.08–$0.12/GB after the first free GBs. For a high-traffic download or media workload, moving egress-heavy storage to a zero-egress provider can cut that line of the bill by 90–100%.

How do I estimate my monthly egress?

Multiply your average response or file size by how many times it's served per month. For an API, average JSON response (5–50 KB) × monthly requests. For media, average asset size × downloads. Enter the resulting GB above and the calculator prices it across every provider so you can see the cheapest option and the yearly difference.