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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.

TB
GB
₹
₹
₹
%
₹
Monthly egress cost
₹91,260

₹91,260 for 10 TB out, at a blended ₹9 per GB. A CDN serving 0% would cost ₹0 and save ₹0. Annual egress comes to ₹10,95,120. Ingress is free and egress is charged, so the cost of moving data out of a provider grows with everything you accumulate there.

Blended rate per GB
₹9
Cost from origin
₹91,260
CDN cost
₹0
Saving from the CDN
₹0
Annual cost
₹10,95,120
Billable GB
₹10,140
On migration cost
Ingress is free and egress is charged, so the cost of moving data out of a provider grows with everything you accumulate there.
On prices
Prices are inputs, not constants. Provider pricing changes continuously, so take the current rate from the provider calculator rather than relying on a default here.
How this is calculated
Method and background

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

Worked examples

Each of these is asserted on every build. If a change to the engine ever moved one of these answers, the build would fail before the page could print it.

10 TB of egress

Data out a month
10 TB
Free allowance
100 GB
Rate to 10 TB
₹9
Rate 10 to 50 TB
₹8
Rate above 50 TB
₹7
Share served by a CDN
0%
CDN rate per GB
₹4

Monthly egress cost₹91,260

10,240 less 100 free; 10,140 within the first tier

Open this example

a CDN serving most of it cuts the bill

Data out a month
10 TB
Free allowance
100 GB
Rate to 10 TB
₹9
Rate 10 to 50 TB
₹8
Rate above 50 TB
₹7
Share served by a CDN
80%
CDN rate per GB
₹4

Monthly egress cost₹50,700

boundary: 8,112 GB at 4 rather than 9

Open this example

egress within the free tier costs nothing

Data out a month
0.05 TB
Free allowance
100 GB
Rate to 10 TB
₹9
Rate 10 to 50 TB
₹8
Rate above 50 TB
₹7
Share served by a CDN
0%
CDN rate per GB
₹4

Monthly egress cost₹0

degenerate case

Open this example

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 · India · 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.