Gaming & Internet
Zoom Data Usage Calculator
Estimate how much data your Zoom meetings use, and how much bandwidth they need.
Free to useNo sign-up requiredNo watermarkRuns in your browser
Two different questions get mixed up with video calls. Bandwidth is about speed: how many megabits per second your connection needs so the meeting runs smoothly. Data usage is about volume: how many gigabytes the meetings add up to on your plan by the end of the month.
This calculator answers both. Choose the video quality, how many people are in the meeting and whether you use gallery view or screen sharing, and see the download and upload rates needed, the data used per hour, per day and per month.
How this tool works
Enter your meeting time
Hours per day and meeting days per month.
Describe the meeting
Number of participants, video quality, gallery view, audio and screen sharing.
Use measured rates if you have them
Optional: enter the rates from Zoom’s statistics to replace the estimate.
Read both answers
Bandwidth needed (Mbps) and data used (GB).
How it works
The rates come from Zoom’s published bandwidth recommendations. For one-to-one calls: about 0.6 Mbps each way for standard quality, 1.2 Mbps for 720p and 3.8 Mbps down / 3.0 Mbps up for 1080p. For group calls: 1.0 / 0.6 Mbps, 2.6 / 1.8 Mbps and 3.8 / 3.0 Mbps. Gallery view is listed at 2.0 Mbps for 25 tiles and 4.0 Mbps for 49. Audio adds 60–80 kbps (80 kbps is used) and screen sharing with video up to 150 kbps.
The calculator uses the one-to-one figures for two participants and the group figures for three or more. With gallery view on in a group call, the download rate is at least Zoom’s gallery figure.
Data per hour = (download + upload rate) × 3,600 ÷ 8. One megabit per second for an hour is 450 MB. The defaults - a five-person 720p call with audio - need about 2.68 Mbps down and 1.88 Mbps up, which is about 2.05 GB per hour.
Zoom adapts quality to your connection, and these figures are recommendations rather than measurements of your calls. If you enter your own measured rates, they replace the estimate.
Common use cases
- Checking whether a home or mobile plan can cover a month of remote work meetings.
- Deciding whether to turn video off on a hotspot or metered connection.
- Checking whether your upload speed is enough to send 1080p video.
- Planning a hybrid classroom or webinar setup.
Bandwidth vs data usage
Bandwidth is a rate, like the width of a pipe: a 720p group call needs about 2.6 Mbps coming in and 1.8 Mbps going out. If your connection cannot deliver that at the moment, video quality drops or freezes.
Data usage is a total, like the water that has flowed through the pipe: that same call used for one hour moves about 2 GB. Data caps and mobile plans care about this number, not the speed.
| 1:1 standard quality | 0.6 / 0.6 Mbps |
|---|---|
| 1:1 720p | 1.2 / 1.2 Mbps |
| 1:1 or group 1080p | 3.8 / 3.0 Mbps |
| Group 720p | 2.6 / 1.8 Mbps |
| Gallery view, 25 / 49 tiles | 2.0 / 4.0 Mbps download |
| Audio (VoIP) | 60–80 kbps |
Formula
Data per hour
(download Mbps + upload Mbps) × 450 MB
Per day
per hour × meeting hours per day
Per month
per day × meeting days per month
Worked examples
A daily one-hour team meeting at 720p
Five people in a 720p group call with audio need about 2.68 Mbps down and 1.88 Mbps up. That uses about 2.05 GB per hour, so 20 meeting days come to about 41 GB a month.
Audio-only calls, two hours a day
Audio at about 80 kbps each way uses about 72 MB per hour. Two hours on 10 days is about 1.44 GB a month - a fraction of a video call.
Frequently asked questions
How much data does a Zoom call use per hour?
Using Zoom’s published rates: about 70 MB per hour for audio only, roughly 1 GB for a one-to-one 720p call, about 2 GB for a group 720p call and around 3 GB or more for 1080p. Actual use is often lower because Zoom adapts to your connection.
What is the difference between bandwidth and data usage?
Bandwidth is the speed your connection needs during the meeting (Mbps). Data usage is how much the meeting transfers in total (GB), which counts against a data plan. This calculator shows both.
Does gallery view use more data?
It can. Zoom lists 2.0 Mbps for a 25-tile gallery and 4.0 Mbps for 49 tiles, compared with less for a single speaker in some call types.
How can I reduce Zoom data usage?
Turn off your video when it is not needed, use speaker view instead of large galleries, and avoid HD settings on metered connections. Audio-only uses a small fraction of the data.
Where do the figures come from?
From the bandwidth section of Zoom’s system requirements support article. Requirements can change, so check Zoom’s current page if you need exact figures, or enter rates you have measured.