Split monthly traffic across world regions, find the busiest one and size its peak bandwidth from the share.
Shares are normalised rather than trusted, so an input set that adds to 96% or 104% still produces a consistent split. Each region's peak is derived from its own average bit rate, because regional prime times do not overlap — the global peak is always less than the sum of regional peaks. CDN pricing is regional and per-GB rates in Asia-Pacific and South America are often two to four times the North American rate, so the distribution — not just the total — drives both cost and where you place capacity.
Regional Traffic Distribution
region traffic = total × region share ÷ sum of shares; region peak Gbps = region TB × 8,000 ÷ seconds in the month × peak-to-average ratio.
region traffic = total × region share ÷ sum of shares; region peak Gbps = region TB × 8,000 ÷ seconds in the month × peak-to-average ratio. Shares are normalised rather than trusted, so an input set that adds to 96% or 104% still produces a consistent split. Each region's peak is derived from its own average bit rate, because regional prime times do not overlap — the global peak is always less than the sum of regional peaks.
CDN pricing is regional and per-GB rates in Asia-Pacific and South America are often two to four times the North American rate, so the distribution — not just the total — drives both cost and where you place capacity.
This calculator takes 7 inputs: Total traffic delivered, North America share, Europe share, Asia-Pacific share, Latin America share, Africa, Middle East and elsewhere, Peak-to-average ratio. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.