Bandwidth Calculator
Estimate your website's monthly bandwidth from page size, visitor count, and pages per visit.
How it works
Monthly bandwidth is how much data your site sends to visitors over a month. Multiply the average page weight by the number of visitors and by how many pages each one views, and you have the total transfer.
Say your pages average 2 MB, you get 50,000 visitors a month, and each views 3 pages. That's 2 × 50,000 × 3 = 300,000 MB, or roughly 293 GB. The tool converts to GB and TB automatically.
Add your hosting plan's cap and you'll see how much headroom is left, or by how much you'd blow past it. That's the number that decides whether your current plan can handle a traffic spike.
Frequently asked questions
How do I find my average page size?
Open your site in a browser, use the developer tools Network tab, and reload — it reports the total transferred for that page. Check a few representative pages and take a rough average.
Should I add a safety margin?
Yes. This estimate ignores bots, repeat asset downloads, and traffic spikes, all of which push real usage higher. Padding your figure by 30 to 50 percent gives you breathing room.
What happens if I exceed my hosting cap?
It depends on the host. Some throttle your site, some charge overage fees, and a few take it offline until the next cycle. If the calculator shows you going over, it's worth upgrading before it bites.