Data Egress Cost Calculator
Egress cost with tiered rates and CDN offload. Egress is the cost that makes cloud migration expensive: moving 100 TB out is a real bill, and that asymmetry is worth understanding before it becomes a constraint.
Also called: data transfer cost calculator, bandwidth cost.
$91,260.00 for 10 TB out, at a blended $9.00 per GB. A CDN serving 0% would cost $0.00 and save $0.00. Annual egress comes to $1,095,120.00. Ingress is free and egress is charged, so the cost of moving data out of a provider grows with everything you accumulate there.
How this is calculated
Egress prices in tiers, with each rate applying only to the volume inside its band, so the blended rate falls as volume grows. A CDN typically charges less per gigabyte than origin egress and serves repeat requests from cache, so offloading a large share cuts the bill substantially for static content. The strategic point is that ingress is free and egress is not: the cost of getting data out of a provider is a genuine switching cost, and it grows with the data you accumulate.
egress prices in tiers, each rate applying only to the volume inside its band- g
- Billable GB
Method and limits
What it assumes
- A single provider with the tier structure you enter.
What it deliberately does not model
- Inter-region and inter-availability-zone transfer price differently again.
- CDN pricing varies by region and by commitment.
- Some providers have changed egress pricing substantially under regulatory pressure.
Formula version 1.0.0 · definition 1.0.0 · United States · Report a problem with this calculator
Frequently asked questions
- Why is data in free and data out charged?
- It reflects a real network cost asymmetry, and it also raises the price of leaving. Both are true, and the second is worth factoring into architecture decisions early.
- Does a CDN always save money?
- For cacheable content served repeatedly, usually. For unique content fetched once each, the CDN adds a hop without saving origin egress.