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Multiple attendees from the same Internet connection


We will be hosting a meeting at our location, that up to 100 people may be attending, from that same location (using a single Internet connection).   I am concerned about bandwidth.  Will that overwhelm our bandwidth?  How much bandwidth would we need to have 100 people attending a meeting through one Internet connection?


Community Champion

Hi Roger,

that's a great question! Zoom is very efficient when it comes to bandwidth, but still, there may be some concerns with such a large group. 


Bandwidth requirements:
The bandwidth used by Zoom will be optimized for the best experience based on the participant's network. It will automatically adjust for 3G, WiFi, or wired environments.


Recommended bandwidth for meetings for group video calling, per user:
For high-quality video: 1.0 Mbps/600kbps (up/down) 
For 720p HD video: 2.6Mbps/1.8Mbps (up/down)
For 1080p HD video: 3.8Mbps/3.0Mbps (up/down)
For gallery view receiving: 2.0Mbps (25 views), 4.0Mbps (49 views)
For screen sharing only (no video thumbnail): 50-75kbps
For screen sharing with video thumbnail: 50-150kbps
For audio VoiP: 60-80kbps
For Zoom Phone: 60-100kbps


So for example, 100 users connected on-site to high-quality video would require a minimum of 100 mbps bandwidth.


The biggest concern beyond bandwidth is ensuring your network can handle that many individual clients without high latency or buffer bloat. Having a network engineer confirm that your wireless access points can support the load and that there are QoS rules in place for managing the load properly would provide the most peace of mind.