Page-view bandwidth calculator

Estimate monthly page-data transfer from your own page-view count, average transferred size, and a cache assumption. This is a planning scenario, not a provider allowance check or a traffic forecast.

Enter all three values and calculate.

Method and assumptions

Gross monthly transfer = page views × average transferred MB per view ÷ 1,000. Modeled origin transfer = gross transfer × (1 − entered cache share ÷ 100). The cache input represents the share of modeled page views whose page bytes do not come from the origin host. Use a measured share only if it matches your host's accounting; otherwise treat it as a what-if assumption.

The calculator uses decimal units: 1,000 MB = 1 GB. Average transferred size should reflect bytes actually delivered for a representative view, including resources you want to count. Chrome's Lighthouse documentation explains how its report measures transfer size for requested page resources; a single lab run may not represent your full site's pages, visitors, or repeat visits.

This simple model excludes downloads, video, APIs, bots, uploads, email, backups, traffic spikes and billing rules unless you include them in your inputs. Browser caching, CDN caching, compression, and repeat visits can affect origin transfer differently. It does not estimate peak bandwidth rate, server capacity, page speed, CDN cost, or whether a hosting plan accepts the workload. Check actual usage in your host and CDN dashboards and compare the exact plan terms.

Sources

• Chrome for Developers: Avoid enormous network payloads — Lighthouse reports the size of resources requested by a page; checked November 3, 2026.
• NIST Guide to the SI, Chapter 4 — decimal SI prefixes used for MB and GB; checked November 3, 2026.

For a worked low-traffic example and a checklist for provider limits, see the bandwidth limits guide. For storage and transfer scenarios that also include WordPress files and media, use the WordPress resource needs estimator or image storage planner. To model origin-transfer reduction from a byte-based cache hit share, use the CDN cache hit savings calculator.