Why the cloud egress cost calculator matters
Egress is priced per gigabyte leaving the provider, which means the more successful the product becomes the more the architecture decision made years ago costs. This page turns that decision into a handful of inputs you can defend in a budget review: volume, unit cost, rate of adoption, and time. The output is a planning baseline, not a promise — it tells you whether the idea deserves a vendor quote, a pilot, or a pass.
- • Biggest swing factor: monthly transfer volume
- • Second-order factor: per-GB egress rate, which varies hugely by provider and region
- • Often ignored: growth
What actually changes the answer
monthly transfer volume moves this number first, then per-GB egress rate, which varies hugely by provider and region. Run a conservative case and an upside case before you commit. If the maths only works in the upside case, treat it as a time-boxed test with a kill date rather than a line in next year's plan.
What to do with the result
If egress passes 10% of your cloud bill, put a CDN in front of the heaviest assets before you consider a provider migration — it is a smaller change with most of the saving.
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Read the guideFAQ
What does the cloud egress cost calculator work out?
It applies Monthly cost = (volume × unit price) + platform fee to the values you enter for gb transferred out per month, egress price per gb, fixed networking charges per month, monthly traffic growth. Egress is priced per gigabyte leaving the provider, which means the more successful the product becomes the more the architecture decision made years ago costs.
How accurate is this cloud egress cost calculator?
Exact on volumes. Egress pricing is tiered at most providers; use your blended effective rate from last month's invoice. Replace the defaults with your own invoice, usage export, payroll data, statement, or vendor quote before making a commitment — the maths is exact, so the answer is only as good as the inputs you feed it.
Which input should I stress-test first?
monthly transfer volume. Re-run with a pessimistic value for it; if the decision flips, that assumption is the thing you need real data on before signing anything. After that, check per-GB egress rate, which varies hugely by provider and region and growth.
Which scenario should I start from?
Start with the preset closest to your situation — lean case, expected case, scaled case — then edit the sliders. Presets are realistic starting points, not benchmarks to match, and every change updates the result instantly.
What should I do after running the numbers?
If egress passes 10% of your cloud bill, put a CDN in front of the heaviest assets before you consider a provider migration — it is a smaller change with most of the saving. A useful planning benchmark to compare against: Egress commonly reaches 10–20% of a media-heavy cloud bill.
Can I share or save this calculation?
Yes. Your inputs are written into the page URL, so copying the link shares the exact scenario you are looking at — the person who opens it sees the same numbers. You can also export the inputs and results to CSV or PDF from the result card and keep it with the rest of your workings.
How this calculator is built
Independently maintained
Written by Sam Doshi and the RevenueLab editorial team. We don't sell the data feeds this tool is built on.
Sourced from primary data
Benchmarks come from public AdSense / Stripe / IRS disclosures and reader-submitted data — never third-party "$X per view" claims. Full methodology.
Last editorial review
Reviewed on a rolling quarterly cycle. Dated reviews are published on the methodology record for each calculator.
Editorial standards
See our editorial policy and disclaimer. Results are estimates, not advice.