Does this include CDN request fees?

No. It focuses on GB egress. Add request/WAF fees separately.

What about tiered egress pricing?

Not modeled. Use an average rate across your tiers/regions.

Can I use this for video streaming?

Yes, as a rough cut—set compression low and CDN cost to your media CDN rate.

Does it include origin acceleration?

No. Only egress is modeled; any acceleration charges are outside this estimate.

How do I include free tiers?

Reduce data out inputs or rates to reflect free-tier GB if you have them.

tech calculator

Cloud Bandwidth Savings Estimator

Estimate bandwidth cost savings from caching and compression versus serving traffic direct from origin.

Results

Current origin bandwidth cost: $900
Optimized delivered GB (after compression): 7500.00
Origin egress GB after caching: 3000.00
Optimized origin cost: $270
CDN egress cost: $150
Total optimized bandwidth cost: $420
Estimated monthly savings: $480

How to use this calculator

Enter monthly data out and your origin egress rate.
Enter expected cache hit rate, compression savings, and CDN egress rate.
Review optimized origin GB, CDN GB, total cost, and savings.

Inputs explained

Cache hit rate: Percent of requests served from CDN cache; higher hit rate lowers origin egress.
Compression savings: Byte reduction from gzip/brotli or image optimization across traffic.

How it works

Current cost = data out × origin rate. Optimized delivery reduces bytes by compression, then applies cache hit rate to origin egress.

Optimized cost = origin egress × origin rate + delivered GB × CDN rate. Savings = current − optimized.

Formula

Current cost = Data out × Origin $/GB
Compression factor = 1 − Compression%
Optimized delivered GB = Data out × Compression factor
Origin egress GB = Optimized delivered GB × (1 − Cache hit rate)
Origin cost = Origin egress GB × Origin $/GB
CDN cost = Optimized delivered GB × CDN $/GB
Optimized total cost = Origin cost + CDN cost
Monthly savings = Current cost − Optimized total cost

When to use it

Justifying CDN rollout or tuning caching policies.
Estimating ROI on compression/image optimization projects.
Benchmarking cloud egress savings by region/provider.

Tips & cautions

Static assets often reach 80%+ hit rates; API traffic may be lower—adjust accordingly.
If CDN charges vary by region, use a blended CDN rate.
Include image/video transcode savings by increasing the compression input.
Simplified linear model; no tiered egress pricing or regional mix.
Does not include CDN request fees or WAF/DDoS charges.
Compression varies by content type; use an average for your mix.

Worked examples

10,000 GB/mo, $0.09 origin, 60% cache hit, 25% compression, $0.02 CDN

Current cost = $900
Optimized delivered ≈ 7,500 GB; Origin egress ≈ 3,000 GB
Origin cost ≈ $270; CDN cost ≈ $150
Optimized total ≈ $420; Savings ≈ $480/mo

Deep dive

Estimate cloud bandwidth savings from caching and compression versus origin-only delivery.

See origin egress reduction, CDN costs, and net monthly savings in one view.

FAQs

Does this include CDN request fees?: No. It focuses on GB egress. Add request/WAF fees separately.
What about tiered egress pricing?: Not modeled. Use an average rate across your tiers/regions.
Can I use this for video streaming?: Yes, as a rough cut—set compression low and CDN cost to your media CDN rate.
Does it include origin acceleration?: No. Only egress is modeled; any acceleration charges are outside this estimate.
How do I include free tiers?: Reduce data out inputs or rates to reflect free-tier GB if you have them.

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