Cloud Data Transfer Cost
Estimate cloud egress bandwidth cost
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Need a fast answer on estimating cloud egress bandwidth cost? Cloud Data Transfer Cost answers with the steps beside it. Just enter Data Transferred (GB/mo); Cloud Data Transfer Cost updates the result as you type. Cloud Data Transfer Cost ties each output to its formula. Use Cloud Data Transfer Cost for a reliable number, fast. You can disconnect once Cloud Data Transfer Cost has loaded; the arithmetic runs locally. Cloud Data Transfer Cost is part of the Tech & Digital collection on CalcProMaster, alongside cloud egress cost, free online cloud data transfer cost calculator and more. Cloud Data Transfer Cost shows formula, assumptions and result together. Start with Cloud Data Transfer Cost; the first number takes seconds.
What the defaults give
100 GB a month of egress from AWS costs $9.00.
The rate is a flat $0.09 per GB; Azure bills $0.087, Google Cloud $0.12, and Cloudflare $0.
The formula
Monthly cost = data transferred in GB × provider rate
Rates used: AWS $0.09, Azure $0.087, GCP $0.12, Cloudflare $0.00
That is deliberately one flat rate per provider, which is enough to rank them but not enough to reproduce a real bill. Every major cloud prices egress in tiers by volume and by destination, and the first tier is the expensive one.
Worked examples
100 GB, AWS → $9.00
100 GB, Azure → $8.70
100 GB, GCP → $12.00
100 GB, Cloudflare → $0.00
1,000 GB, AWS → $90.00
10,000 GB, GCP → $1,200.00
Egress is the line that surprises people
Inbound data is usually free and storage is cheap; outbound is where the bill grows, because it is the part that uses someone else network. A video-heavy site serving 10 TB a month pays $900 on AWS at this rate, which can exceed the compute bill entirely. The same traffic behind a CDN with free egress can cost a fraction, at the price of caching rules and a different architecture.
Direction matters in the real pricing too. Traffic between regions, between availability zones, and out to the public internet are three different rates, and only the last is modelled here. Service-to-service chatter across zones can quietly become the largest egress line on the invoice, before a single user downloads anything.
Ways to move the number
Compression is the cheapest win: text, JSON and JavaScript typically shrink 70% to 80% with gzip or brotli, which cuts egress by the same proportion. Cache headers that let browsers and CDNs keep assets reduce repeat transfers without changing the site at all. And serving images in modern formats at the size actually displayed often removes more bytes than any code change.
For predictable workloads, committed-use or private-pricing agreements discount egress meaningfully, and some providers waive it when traffic leaves to a partner CDN. Check the destination-based rules before designing around a rate card: the headline $0.09 is a starting tier, not a constant.
Frequently Asked Questions
How much does 100 GB of AWS egress cost?
$9.00 at $0.09 per GB. Azure is $8.70 at $0.087 and Google Cloud $12.00 at $0.12 for the same volume.
Why is Cloudflare free?
The tool uses a $0 rate because Cloudflare does not charge for egress on its core plans. The calculator shows the free-tier note rather than a cost.
Does the calculator use tiered pricing?
No. It applies one flat rate per provider. Real bills fall into volume tiers and vary by destination, so treat the result as a ranking rather than a quote.
What is the biggest lever on egress cost?
Compression and caching. Gzip or brotli typically cuts text payloads by 70–80%, and correct cache headers stop the same bytes being sent twice.
Is traffic between regions charged?
Yes, at a different rate from internet egress, and it is not modelled here. Cross-zone service traffic can become the largest line before any user downloads anything.
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