Rates vary by service, source region, destination, network tier, and contract. Verify and edit every rate below.
Data transferred from cloud storage/compute out to public internet clients.
Percentage of requests served directly from CloudFront/Cloudflare edge nodes.
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Introduction
Cloud egress does not have one universal provider rate. Price depends on the originating service, source region, destination geography, network tier, volume, availability-zone path, and contract. Current official pages show material differences from older summaries. AWS S3 pricing states that the first 100 GB per month of internet transfer out is free when aggregated across eligible AWS services and regions, excluding China and GovCloud. Google Cloud network pricing states that Standard Tier provides the first 200 GiB per month free per account across eligible regions, while Premium Tier prices vary by destination. Azure bandwidth pricing states that data transfer in and same-availability-zone transfer are free, with other charges selected by region in its pricing calculator. Cloudflare R2 pricing lists free internet egress, standard storage at $0.015 per GB-month, Class A operations at $4.50 per million, and Class B operations at $0.36 per million as of August 7, 2026.
What This Calculator Does
Select a provider planning preset, enter monthly internet, inter-region, and cross-zone traffic, then verify and edit every billing rate. The calculator multiplies billable volume by the entered rate after subtracting the entered free allowance. It also estimates origin traffic avoided at a stated CDN cache hit percentage and the public internet egress amount potentially avoided by R2. Those figures are not net savings because CDN delivery, request operations, storage, retrieval, and migration charges remain separate.
The Formula
The revised calculator deliberately uses editable rates. AWS applies service and volume tiers. Google separates Premium and Standard network tiers and prices by source and destination. Azure asks users to select regions and zones in its calculator. A fixed global provider table would therefore be misleading. Cloudflare R2 sets internet egress to zero but still charges storage and operations, so the displayed R2 amount represents avoided source egress only.
Step-by-Step Example
Select a planning preset
Choose AWS, Google Cloud Standard Tier, Azure, Cloudflare R2, or Custom. The preset fills editable planning values and does not claim to be a provider quote.
Enter measured monthly transfer
Enter 25 TB of public internet egress, 5,000 GB of inter-region replication, and 15,000 GB of cross-zone traffic from billing exports.
Replace the rates
Open the official provider calculator, select the same service, source region, destination, and network tier, then replace the planning rates and free allowance.
Interpret avoided traffic carefully
A 65% CDN hit rate can avoid up to 65% of origin egress, but net savings must subtract CDN transfer, request, and service charges.
Real-World Use Cases
AWS S3 download service
A SaaS team uses its exact S3 region and destination mix rather than assuming every byte is billed at the first public EC2 tier.
Google Cloud network tier comparison
An architect compares Premium Tier and Standard Tier with the correct destination prices and the current 200 GiB Standard Tier free allowance.
Azure zone architecture review
A platform team distinguishes same-zone traffic, which Azure lists as free, from zone-to-zone and region-to-region paths priced in the bandwidth calculator.
Cloudflare R2 migration
A media service compares eliminated source egress with R2 storage and operation costs before moving static objects.
Comparison
| Provider | Verified current fact | Must be selected manually |
|---|---|---|
| AWS | First 100 GB/month free across eligible services and regions | Service, region, destination, volume tier |
| Google Cloud | Standard Tier first 200 GiB/month free across eligible regions and SKUs | Premium or Standard, source and destination |
| Microsoft Azure | Inbound and same-availability-zone transfer are free | Source zone, destination, agreement, currency |
| Cloudflare R2 | Internet egress free; standard storage $0.015/GB-month | Operations, storage class, retrieval, lifecycle |
Common Mistakes to Avoid
Using a single global rate. Egress prices vary by region, destination, service, and network tier.
Assuming free egress means free storage delivery. R2 charges storage and Class A and Class B operations even though internet egress is free.
Calling avoided origin traffic net CDN savings. CDN delivery and request charges must be deducted.
Treating GB and GiB as identical. Provider free allowances and billing units may use different definitions.
Ignoring internal paths. Cross-zone and inter-region traffic can be material even when public egress is low.
Frequently Asked Questions
Why are all rates editable now?
Official provider pricing is multidimensional. Editable rates prevent a regional or service-specific price from being presented as universally current.
Is Cloudflare R2 internet egress really free?
The official R2 pricing page lists internet egress as free. Storage, operations, and Infrequent Access retrieval remain billable.
What is Google Cloud's current free Standard Tier allowance?
The official network pricing page lists the first 200 GiB per month free per account across eligible regions and SKUs.
Does the AWS 100 GB allowance apply to every account and service?
AWS describes it as aggregated across eligible AWS services and regions, with exclusions such as China and GovCloud. Verify the exact service page.
Does Azure charge within one availability zone?
The official Azure bandwidth page lists transfer within the same availability zone as free. Other paths may be charged.
Accuracy and Disclaimer
Pricing facts were researched from official AWS, Google Cloud, Microsoft Azure, and Cloudflare documentation and verified August 19, 2026. Preset rates are editable planning values, not quotes. Confirm the exact service, source, destination, tier, volume, currency, tax, and enterprise agreement before making a decision.
Conclusion
Export actual billing data by service, region, source, and destination before using this result for a commitment. Replace each planning preset with the current rate from the provider calculator or your contract. Use the Data Transfer Speed Calculator for migration windows and the Cloud Infrastructure Cost Estimator for compute and storage planning.
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