How Much Data Does Zoom Use Per Hour? (1:1, Group, HD)

How Much Data Does Zoom Use Per Hour?

A standard one-on-one Zoom call uses about 540 MB per hour in standard definition, rising to 1.62 GB per hour at 1080p. Group calls use more — roughly 810 MB per hour standard, up to 2.4 GB per hour with HD enabled and every camera on. Audio-only calls are far lighter, at just 27–36 MB per hour.

Zoom Data Usage by Call Type

Call Type	Standard/480p	720p HD	1080p (Full HD)
1-on-1 video call	~540 MB/hr	~1.08 GB/hr	~1.62 GB/hr
Group video call (gallery view)	~810 MB/hr	~1.35 GB/hr	up to ~2.4 GB/hr
Audio-only (VoIP)	~27–36 MB/hr	—	—
Screen sharing (added on top)	~22–67 MB/hr	—	—

1-on-1 Call Data Usage per Hour

Audio-only ~36 MB

Standard/480p ~540 MB

720p HD ~1.08 GB

1080p (Full HD) ~1.62 GB

Group calls use more data than 1-on-1 calls because your device is receiving a separate video stream for every participant with their camera on — not because the call itself is "higher quality."

Why Group Calls Use So Much More Data

Every additional camera in a group call adds another video stream your device has to download simultaneously. A gallery-view call with 6 people on camera at HD quality is downloading roughly 6x the video data of a 1-on-1 call at the same setting — which is why a long HD group meeting can approach Netflix-level data usage (~2.4 GB/hour) despite being "just a work call."

How to Reduce Zoom Data Usage

Turn off HD video in Settings → Video — this alone can cut a call's data use by 30–40% with minimal visible quality loss on a laptop screen
Switch to audio-only when video isn't necessary — this is the single biggest lever, cutting usage by 80–95% compared to video
Avoid gallery view on mobile data — speaker view (showing only the active speaker) downloads fewer simultaneous video streams than gallery view
Limit screen sharing of video content — sharing a fast-moving video or animation uses more data than sharing a static document or slide

What Internet Speed Does Zoom Need?

Zoom's own recommendations:

~600 Kbps up/down — minimum for 1-on-1 calls
~1.5 Mbps up/down — minimum for group calls
~3.8 Mbps down / 3 Mbps up — recommended for 1080p HD group video

These are modest requirements compared to video streaming — see our 5 Mbps to GB conversion page for context on how much data a connection at that speed can move per hour, useful if you're checking whether a hotspot or slower connection can handle a work call comfortably.

Zoom vs. Streaming Apps

Zoom's 1-on-1 calls use noticeably less data than HD video streaming, but a long HD group call can rival Netflix or YouTube's per-hour usage. See the full comparison of data usage across Netflix, YouTube, Zoom, and more for the complete picture.

Frequently Asked Questions

How much data does Zoom use per hour?

A standard 1-on-1 Zoom call uses around 540 MB per hour. Group calls in HD gallery view can use up to 2.4 GB per hour.

Does turning off video save a lot of data on Zoom?

Yes — audio-only calls use only about 27–36 MB per hour, roughly 90%+ less than a video call.

Do group calls use more data for everyone, or just the host?

Everyone — each participant's device downloads a separate video stream for every other participant whose camera is on, so group calls use more data for all attendees, not just the host.

Does screen sharing use a lot of extra data?

Not much on its own — typically 22–67 MB per hour — but sharing video or fast-moving content uses more than sharing static documents.

Is Zoom's data usage the same on mobile as on a computer?

Roughly, though the mobile app sometimes optimizes bandwidth slightly differently, which can result in marginally lower usage on phones versus desktop.