VoIP Bandwidth Calculator – Call Bandwidth
Calculate bandwidth needed for VoIP calls with any codec.
About This Calculator
Calculate bandwidth needed for VoIP calls with any codec. Use the calculator above for instant results.
Worked Examples
- 87.2 × 10 = 872 kbps = 0.87 Mbps
Answer: 0.87 Mbps
- 31.2 × 100 = 3,120 kbps = 3.12 Mbps
Answer: 3.12 Mbps
- 87.2 × 50 = 4,360 kbps = 4.36 Mbps
Answer: 4.36 Mbps
Who Uses This Calculator?
Plan VoIP bandwidth.
QoS policy sizing.
Unified communications design.
PBX replacement planning.
Common Mistakes to Avoid
❌ Codec bandwidth includes overhead
G.711 at 64 kbps + RTP/UDP/IP headers = 87.2 kbps per call. Always include header overhead.
❌ Jitter affects VoIP more than bandwidth
QoS must prioritize voice. Max 20ms jitter, 150ms latency, 1% packet loss for acceptable quality.
Frequently Asked Questions
G.711 vs G.729?
G.711: highest quality, 87 kbps. G.729: compressed, 31 kbps, slight quality loss. Use G.711 for quality, G.729 to save bandwidth.
QoS for VoIP?
DSCP EF marking. Priority queue. Hard limits on latency/jitter/loss.
Teams/Zoom bandwidth?
Audio: 100 kbps. SD video: 500 kbps. HD 1080p: 4 Mbps per person.