How is monthly bandwidth calculated?

Monthly bandwidth equals data per visit multiplied by visits per month (times any safety factor). For example, 2 MB per visit times 100,000 visits equals about 200 GB per month. The average sustained link speed is that monthly volume converted to bits and divided over a 30-day month.

How accurate is this estimate?

It is a planning estimate. Real usage varies with caching, repeat visitors, asset sizes and traffic distribution (most sites peak rather than spread evenly). Use the redundancy factor to add headroom; treat the average sustained rate as a lower bound on the link you need.

Is my traffic data sent anywhere?

No. The calculator is privacy-first and runs entirely in your browser — the numbers you enter never leave your device.

Bandwidth Calculator

Estimate how much monthly bandwidth a site or service will use, and the average link speed it implies. The core formula is simple:

monthly transfer = data per visit × visits per month × safety factor

A page that ships 2 MB to 100,000 visitors a month moves roughly 200 GB. Spread evenly over a 30-day month that is only a couple of Mbit/s on average — but real traffic peaks, so multiply by a redundancy factor of 1.5–2.0 when sizing a host or CDN allowance. Data transfer here uses decimal units (1 GB = 1000 MB) and the bit conversion uses 1 byte = 8 bits. Everything is calculated locally in your browser — nothing is sent anywhere.