Cloudflare CDN Cost Calculator

Estimate a Cloudflare bill from plan fee, Argo smart routing and the origin egress that caching still leaves behind.

About Cloudflare CDN Cost Calculator

Cloudflare's headline model is a flat plan fee with no per-GB delivery charge, so the variable part of the bill comes from optional add-ons like Argo and — crucially — from the origin egress your own cloud still bills on every cache miss. Raising the hit ratio therefore cuts the bill even though the CDN itself does not meter bytes. Comparing a flat-fee CDN with a per-GB one only works if you count origin egress on both sides, which is where most CDN comparisons go wrong. Plan pricing, Argo rates and enterprise commits all change, so confirm current pricing with Cloudflare and your origin provider.

Formula

Cloudflare CDN Cost

cost = plan fee + add-ons + (Argo price × delivered GB if enabled) + (1 − cache hit ratio) × delivered GB × origin egress price.

plan fee: Flat monthly charge for the zone's plan tier
Argo price: Per-GB charge for routing over the provider backbone
origin egress price: What your origin cloud bills to answer a cache miss

Worked example

With the default values below, Cloudflare CDN Cost Calculator returns Monthly Cost of $4,595.91. Change any input above and every figure here is recalculated in your browser.

Inputs used

Traffic delivered to usersaccepts 0–1,000,000 TB/month: 40 TB/month
Cloudflare planone of Free, Pro, Business, Enterprise (illustrative commit): Business
Edge cache hit ratioaccepts 0–100 %: 92 %
Enable Argo Smart Routing: Yes
Argo price per GBaccepts 0–10 USD/GB: 0.1 USD/GB
Load balancing and other add-onsaccepts 0–100,000 USD/month: 5 USD/month
Origin cloud egress priceaccepts 0–10 USD/GB: 0.09 USD/GB

Results

Monthly Cost: $4,595.91
Plan and Add-on Fees: $205.00
Argo Smart Routing Charge: $4,096.00
Origin Egress on Cache Misses: $294.91
Origin Egress Avoided by Caching: $3,391.49
Cost of Serving Everything From Origin: $3,686.40
Effective Price per GB Delivered: $0.1122
Traffic Served From Cache: 36.80 TB

Step by step

1Values used
2Cloudflare CDN Cost
3Monthly Cost= 4,595.91
4Plan and Add-on Fees= 205.00
5Argo Smart Routing Charge= 4,096.00
6Origin Egress on Cache Misses= 294.91
7Origin Egress Avoided by Caching= 3,391.49
8Cost of Serving Everything From Origin= 3,686.40

Assumptions and limits

The result is derived only from the 7 inputs listed above. Anything not among them is not part of the calculation.
In particular, this calculator does not take inflation, tax or compounding frequency into account.
Figures are rounded for display to 4 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Frequently Asked Questions

How is Cloudflare CDN Cost calculated?

cost = plan fee + add-ons + (Argo price × delivered GB if enabled) + (1 − cache hit ratio) × delivered GB × origin egress price. Cloudflare's headline model is a flat plan fee with no per-GB delivery charge, so the variable part of the bill comes from optional add-ons like Argo and — crucially — from the origin egress your own cloud still bills on every cache miss. Raising the hit ratio therefore cuts the bill even though the CDN itself does not meter bytes.

Why does Cloudflare CDN Cost matter?

Comparing a flat-fee CDN with a per-GB one only works if you count origin egress on both sides, which is where most CDN comparisons go wrong. Plan pricing, Argo rates and enterprise commits all change, so confirm current pricing with Cloudflare and your origin provider.

What values do I need to enter?

This calculator takes 7 inputs: Traffic delivered to users, Cloudflare plan, Edge cache hit ratio, Enable Argo Smart Routing, Argo price per GB, Load balancing and other add-ons, Origin cloud egress price. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.