Cloud Egress Cost Calculator
See what your monthly traffic costs on AWS, Google Cloud or Azure, by path, and the three biggest fixes.
Each one fills in the fields below for a typical workload of that kind. You can change any of them.
Monthly traffic, in TB, by where it goes.
Inside the cloud
Leaving the cloud
Projection
- A year
- $37,346.40
- Three years, with growth
- $135,616.80
- Blended per GB
- $0.0410
76 TB a month on AWS, list prices.
| Same zone, 20 TBNo charge over private addresses | $0.00 |
| Another zone, same region, 8 TB$0.01 a GB charged to the sender and $0.01 to the receiver | $160.00 |
| Another region, same continent, 5 TB$0.02 a GB | $100.00 |
| Backup or DR region, 3 TBReplication priced as inter-region, $0.02 a GB | $60.00 |
| Your data center, 10 TB$0.02 a GB over Direct Connect; the port is not in this figure | $200.00 |
| Public internet, 30 TBInternet tiers from $0.09 a GB, shared by every internet-bound path | $2,592.20 |
| Total | $3,112.20 |
Over three years
The changes worth most
- 1Serve users through Amazon CloudFront: up to $228.04/mo
The same 30 TB costs $2,364.16 a month at CDN rates, before cache-fill and request charges.
- 2Keep chatty services in one zone: up to $160.00/mo
Zone-aware routing and placing each service beside its database removes cross-zone traffic; keep a standby in another zone for failover only.
- 3Run the application in the region its data is in: up to $100.00/mo
Cross-region reads and writes between an application and its storage are the most common avoidable transfer line after a migration.
The same traffic on each cloud
| Cloud | A month | A year |
|---|---|---|
| AWS (selected) | $3,112.20 | $37,346.40 |
| Google Cloud | $2,962.28 | $35,547.31 |
| Azure | $2,932.64 | $35,191.68 |
Network only, list prices. Compute, storage and discounts usually matter more when choosing a cloud.
What this model assumes
Show
- Internet tiers are shared. Users, other clouds, and the data center when it has no private link are priced on one monthly tier ladder, after the free allowance (100 GB on AWS and Azure, 1 GiB on Google Premium Tier), and each path takes its share.
- Cross-zone differs by cloud. AWS charges $0.01 a GB to the sender and again to the receiver; Google charges $0.01 a GiB once; Azure stopped charging in May 2024.
- Units are the provider’s. Your TB are decimal; AWS and Azure bill per GB and Google per GiB, which is 7.4% larger, so the same traffic is fewer billed units on Google.
- Google is Premium Tier, to users on the same continent. Standard Tier is cheaper and slower; destinations in Asia, Oceania and South America cost more.
- Not counted: private connection ports and carriers, NAT gateway and load balancer processing, CDN requests and cache fill, and negotiated discounts. The NAT gateway calculator prices the first of those on AWS.
- Growth reprices each year, so a larger volume falls into cheaper tiers rather than scaling the bill in proportion.
Prices verified 18 Oct 2026. Public list prices in USD for North America and Europe, before any discount you have negotiated.
Already running in the cloud?
Cloud Cost Audit: We go through your real bill, find the transfer lines that placement or a private connection would remove, and rank them by saving. From $1,500, fixed. Nothing paid upfront.
Questions
How much does cloud egress cost?
It depends on where the data goes. Inside a zone it is free; across zones it is $0.01 to $0.02 a GB on AWS and Google and free on Azure; between regions $0.02 to $0.05; and to the internet $0.05 to $0.12 a GB, falling with volume. A blended rate hides which path you are paying for.
Is data transfer between availability zones free?
On Azure, yes, since May 2024. On AWS it is $0.01 a GB charged to the sender and $0.01 to the receiver, so $0.02 for each GB that crosses. On Google Cloud it is $0.01 a GiB, charged once.
Is a private connection cheaper than internet egress?
Per GB, much: Direct Connect and Interconnect carry data out for $0.02 a GB or GiB and ExpressRoute for $0.025, against $0.09 or more to the internet. The port and the carrier circuit cost a fixed amount a month. Turn the private connection off on this page to see what it would save on your traffic.
Does a CDN reduce egress costs?
Usually for user-facing traffic. CloudFront, Cloud CDN and Front Door start at $0.0825 to $0.085 a GB and fall faster with volume than internet egress, and data from the origin into the CDN is free or cheaper. Requests are billed too, which this page does not price.
What does traffic to another cloud cost?
The sending cloud bills it as internet egress, so it shares the internet tiers. Analytics in one cloud reading data in another is one of the most expensive patterns a migration can leave behind.
Related tools
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OpenNAT Gateway & Data Transfer Calculator
Price the NAT gateway line that surprises everyone, and find a cheaper setup.
OpenMore tools for: Network and data transfer
This prices the traffic you expect. Finitizer prices the traffic you have.
Finitizer reads data transfer from your bill, splits it by path and workload, and shows which placement or connectivity change would remove each line.
See how Finitizer works