Cloud Egress Calculator
Stop Guessing. Start Calculating the Real Cost of Data Mobility.
Most cloud architects design for storage costs but get blindsided by the “Egress Tax.” Whether you are migrating to a new provider, setting up multi-cloud disaster recovery, or running cross-region analytics, our calculator exposes the hidden tiered pricing models of AWS, Azure, and GCP.
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*Calculations based on public On-Demand pricing as of Dec 2025.
Monthly Cost Estimate
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Key Features
Tiered Pricing Engine: Unlike simple calculators, we model the actual “waterfall” pricing tiers (e.g., the first 100GB free, next 10TB at $0.09, etc.) to give you penny-perfect accuracy.
Multi-Cloud Logic: Automatically detects if your data path is Intra-Region (Free/Cheap), Inter-Region (Backbone rates), or Cross-Cloud (Internet Egress rates).
“Shock Box” Estimates: Get an immediate headline monthly cost and an effective “Price per TB” to help you evaluate if your architecture is sustainable.
Architect’s Insight: If your costs exceed efficiency thresholds, the tool provides automated recommendations for physical transport (Snowball) or private interconnects.
Always Current: Our pricing tables are updated to reflect the latest 2025 public list prices for major hyperscalers.
FAQ
What is “Egress” and why does it cost so much?
Egress is the movement of data out of a cloud provider’s network to the internet or another provider. While Ingress (moving data in) is almost always free, providers charge a premium for outbound data to recover infrastructure costs and—more importantly—to create a financial barrier to leaving their ecosystem (vendor lock-in).
How accurate is this calculator?
We use current, public, on-demand list pricing for all calculations. However, this tool does not account for private pricing agreements (EDPs), reserved capacity, or the cost of private interconnects like AWS Direct Connect or Azure ExpressRoute. It is designed to provide the “ceiling” cost for your architecture.
Why is cross-cloud transfer so much more expensive?
When you move data from AWS to GCP, for example, the source cloud treats that traffic as “Data Transfer Out to Internet.” This is the most expensive tier of cloud networking. Our tool models this “worst-case” scenario so you can plan for the maximum possible bill.
Does this include API call charges?
No. This tool focuses exclusively on Data Transfer Volume (GB/TB). While S3/Blob storage API calls (PUT/GET/LIST) do incur small costs, they typically represent less than 1% of the total bill compared to the heavy weight of egress fees in high-volume environments.
How can I reduce these costs?
If your estimate is “shocking,” consider these three strategies:
Physical Transfer: For one-time migrations over 50TB, it is often cheaper and faster to use physical appliances like an AWS Snowball or Azure Data Box.
Locality: Move your processing/compute into the same region as your data.
CDNs: Use a Content Delivery Network to cache static assets.