Free Tools / Bandwidth Calculator
How much bandwidth for VoIP?
Find out how much internet bandwidth your business phone calls actually need — based on simultaneous calls and codec.
Your call load
Not your number of phones — how many calls happen at the same time at your busiest. A rule of thumb is 1 concurrent call per 3–5 regular phone users.
Recommended bandwidth
1.1 Mbps
each way (upload & download), with 30% headroom
Raw voice needs about 0.88 Mbps; we recommend headroom for signaling and other traffic.
Upload matters most — a typical symmetrical connection handles this comfortably.
Need reliable upload for your calls?
Dedicated business fiber gives you symmetrical speed so voice and data never fight for bandwidth.
Estimates only, for general guidance. Your actual figures depend on your specific setup — contact Voiswitch for an exact quote.