Website Bandwidth Calculator

Detailed web hosting bandwidth calculator with CDN offload and cache hit ratio modeling.

Website Bandwidth Calculator Live Calculation

Monthly Pageviews:

Average Page Weight (MB):

Browser Cache Hit Ratio (%):

CDN Offload Ratio (%):

Origin Hosting Bandwidth Required:

180 GB / month

Gross Uncached Bandwidth:1,000 GB

CDN & Cache Savings:82.0%

1.3× Spike Planning Volume:234 GB / month

Continuous Baseline Rate (no spike):0.56 Mbps

Recommended Uplink (includes 1.3× buffer):0.72 Mbps

What is the Website Bandwidth Calculator?

Designed for web developers and DevOps engineers to size cloud server instances (AWS EC2, DigitalOcean, Hetzner) and avoid unexpected egress bills.

How to Use This Tool

Enter monthly pageviews, average page weight, user cache percentage, and CDN offloading to calculate origin server load.

Formula & Calculation Logic

The mathematical formula used to calculate this conversion is:

Bandwidth = Pageviews × Page Size × (1 - Cache Hit %) × (1 - CDN Offload %)

Step-by-Step Example Calculation

Here is a real-world calculation example demonstrating the mathematics:

Example: 500,000 pageviews/mo, 2 MB page weight, 40% browser cache, 70% CDN offload Origin Bandwidth = 500,000 × 2 MB × 0.60 × 0.30 = 180 GB/month

Frequently Asked Questions

When repeat visitors return to your website, their browser loads CSS, JS, and images from local disk storage rather than downloading them again from your server.

A well-optimized modern webpage should aim for under 1.5 MB to 2.0 MB on initial load.