Website Bandwidth Calculator

Calculate monthly bandwidth from traffic volume and average page weight.

About Website Bandwidth Calculator

Caching removes most repeat asset transfers, so effective bandwidth is well below the naive product of pageviews and page weight. Peak days can run at twice the average, which is what matters for burst limits. Bandwidth overage charges are usually far more expensive than the base plan, making headroom worth paying for.

Formula

Website Bandwidth

Bandwidth = pageviews × page weight, reduced by the share served from cache

peak daily: Roughly twice the daily average, allowing for traffic concentration

Worked example

With the default values below, Website Bandwidth Calculator returns Monthly Bandwidth of 247.742. Change any input above and every figure here is recalculated in your browser.

Inputs used

Monthly visitsminimum 0: 80,000
Pages per visitminimum 0.1: 2.4
Average page weightminimum 0 KB: 2,200 KB
Share served from cacheaccepts 0–100 %: 55 %
Hosting bandwidth allowanceminimum 0 GB: 500 GB

Results

Monthly Bandwidth: 247.742 GB
Monthly Pageviews: 192,000
Share of Allowance Used: 49.55%
Peak Daily Bandwidth: 18.168 GB
Verdict: Comfortably within the allowance

Step by step

1Values used
2Website Bandwidth
3Monthly Bandwidth= 247.742 GB
4Monthly Pageviews= 192,000
5Share of Allowance Used= 49.55
6Peak Daily Bandwidth= 18.168 GB
7Verdict= Comfortably within the allowance

Assumptions and limits

The result is derived only from the 5 inputs listed above. Anything not among them is not part of the calculation.
In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
Figures are rounded for display to 3 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 Website Bandwidth calculated?

Bandwidth = pageviews × page weight, reduced by the share served from cache Caching removes most repeat asset transfers, so effective bandwidth is well below the naive product of pageviews and page weight. Peak days can run at twice the average, which is what matters for burst limits.

Why does Website Bandwidth matter?

Bandwidth overage charges are usually far more expensive than the base plan, making headroom worth paying for.

What values do I need to enter?

This calculator takes 5 inputs: Monthly visits, Pages per visit, Average page weight, Share served from cache, Hosting bandwidth allowance. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.