Calwarden

CDN Bandwidth Cost Calculator

Estimate CDN monthly cost from bandwidth, request volume, invalidations, and user-entered pricing.

Save

Inputs

GB/mo
$/GB

Your values stay on this device.

Results

Monthly CDN Cost
Bandwidth Cost$400.00
Request Cost$15.00
Effective Cost per GB$0.04

Report

Export and share

Document

Copy and share

Assumptions

  • Prices are flat user-entered rates.
  • Regional tiers, free allowances, and volume discounts are not inferred.
  • Traffic data is not uploaded.

Sensitivity preview

CDN Bandwidth -10%: Monthly CDN Cost $400.00

CDN Bandwidth Current: Monthly CDN Cost $440.00

CDN Bandwidth +10%: Monthly CDN Cost $480.00

Formula: Monthly cost = bandwidth GB * price per GB + request count / 10000 * request price + invalidations * invalidation price + fixed fee.

Related Tools

View All
Cloud Cost Est.
Estimate monthly costs for cloud object storage from source-dated provider presets or custom rates.
AWS S3 Storage Cost Calculator
Estimate AWS S3-style storage cost with user-entered storage, request, retrieval, and egress prices.
Download Time
Calculate how long it takes to download a file based on your internet speed.
API Usage Cost Calculator
Estimate API usage cost from monthly requests, request pricing, compute duration, data transfer, and fixed fees.
Data Unit Converter
Convert between bits, Bytes, KB, MB, GB, and TB.

About this CDN Bandwidth Cost Calculator

CDN costs usually combine outbound bandwidth, request volume, cache invalidations, and optional fixed fees.

Who this calculator is for

  • Web teams estimating traffic cost.
  • Product teams pricing media delivery.
  • FinOps teams comparing CDN providers.

When to use it

  • Estimate monthly CDN spend.
  • Compare bandwidth and request cost drivers.
  • Model invalidation or fixed platform fees.

How to use this calculator

  1. Enter monthly CDN bandwidth and request count.
  2. Enter your provider rates.
  3. Add invalidation and fixed fees if applicable.
  4. Review total monthly cost and effective cost per GB.

Key assumptions

  • Prices are flat user-entered rates.
  • Regional tiers, free allowances, and volume discounts are not inferred.
  • Traffic data is not uploaded.

Accuracy and testing

Review formula sources, default test cases, assumptions, unit handling, rounding rules, and changelog for this calculator.

View accuracy page

How this calculator works

Total = bandwidth GB x price per GB + requests / 10,000 x price per 10,000 requests + invalidations x invalidation price + fixed fee.
Monthly cost = bandwidth GB * price per GB + request count / 10000 * request price + invalidations * invalidation price + fixed fee.

Inputs explained

Bandwidth GB

Billable data delivered by the CDN.

Requests

Monthly HTTP request volume, priced in request blocks.

Invalidations

Cache purge or invalidation operations if your provider charges for them.

Understanding your results

The effective cost per GB helps compare scenarios, especially when request fees or fixed fees are meaningful.

Example scenarios

Static site and downloads

10 TB bandwidth, 20 million requests, and a small fixed fee can be split into bandwidth and request-driven cost.

Key Features

  • Instant Calculation
  • Private & Secure
  • Mobile Optimized

Tips & Best Practices

  • Use cache hit ratio reporting to estimate origin transfer separately.
  • Model large download workloads separately from request-heavy API traffic.
  • Enter contract rates instead of public list rates when available.

Frequently Asked Questions

Does this include origin storage cost?
No. Use a cloud storage calculator for origin storage and egress assumptions.
Why price requests separately?
Some CDN workloads have low bandwidth but very high request counts, so request pricing can matter.
Is any infrastructure data stored?
No. The calculation runs locally in your browser and does not upload your inputs.