Wi-Fi Bandwidth Calculator
Work out the download and upload speed your site really needs.
Bandwidth calculator
Planning assumptions (Mbps per active user - edit them to match your site)
| Usage profile | Download | Upload |
|---|---|---|
| Light browsing & messaging | ||
| Mixed (web, social, music, some video) | ||
| Video streaming (HD) | ||
| Video calls |
Recommended internet line
Download
100Mbps
Upload
40Mbps
Active users: 25
Per active user: 3 / 1 Mbps
Calculated need: 93.8 Mbps down / 31.3 Mbps up
A 100 Mbps line covers this. With 25 people online together, a per-user limit of about 6 Mbps down keeps one heavy user from slowing everyone else - that's what hotspot fair-use plans are for.
Formula: users × online % × per-user Mbps × (1 + headroom %), rounded up.
This is a planning estimate, not a guarantee. Real usage varies with apps, video quality and time of day - measure your current line with a speed test and review it after go-live.
How it works.
Buying too little bandwidth means slow Wi-Fi and complaints; buying too much wastes money every month. This calculator gives a transparent planning estimate: enter how many users or devices the site has, what share of them are online at the same time, the kind of use you expect, and how much headroom you want. It shows the download and upload speed to plan for, rounded up to a common line size.
The maths is simple and shown on the page: users × percentage online together × Mbps per active user × (1 + headroom). Concurrency is the number that matters most. A 200-room hotel rarely has every guest streaming at once, while an exam hall or a conference keynote can have almost everyone online in the same minute. If you're unsure, start with 40-60% for offices and guest Wi-Fi and raise it for events and accommodation in the evening.
The per-user figures are planning assumptions, not measurements, and you can edit every one of them. Light browsing and messaging needs little; mixed use adds social media, music and some video; HD video streaming services publish recommendations of around 5 Mbps per stream; and video-call apps list a few Mbps in each direction for HD group calls, which is why the video-call profile has a much higher upload figure. If your site has a known pattern - for example, mostly video calls in the daytime - set the numbers to match.
Headroom covers what averages miss: operating-system updates, cloud backups, peak-hour bursts and growth over the next year or two. 20-30% is a sensible starting point. Remember too that an internet line is shared by everything on the network - CCTV uploads, point-of-sale, phones and servers - so add their needs separately if they use the same connection.
Bandwidth alone doesn't make Wi-Fi feel fast. Without per-user limits, one device downloading a large file can take most of the line and slow everyone else. On guest and hotspot networks, a fair-use policy - a speed cap per user and optional data quotas - lets you serve far more people on the same line. WiFiNexa sets upload and download limits per plan or per user, with time and data limits, on MikroTik routers.
After go-live, check your estimate against reality: run a speed test at busy times, look at peak usage in your router or hotspot reports, and adjust. If the line is fine but users still complain, the problem is often Wi-Fi coverage, channel congestion or cabling rather than bandwidth - our team can survey the site and fix it.
Questions, answered.
How much bandwidth do I need per user?
It depends on what people do. The calculator's editable defaults are 1 Mbps for light browsing, 3 Mbps for mixed use, 5 Mbps for HD video streaming and 3 Mbps both ways for video calls, per active user. Measure your own site and adjust them for the most accurate result.
What does "online at the same time" mean?
It's the share of your users who are actively using the internet in the busiest period, not just connected. Phones sitting idle on the Wi-Fi use almost nothing, so this number is usually well below 100%, except at events and in accommodation during the evening peak.
Why is upload lower than download?
Most browsing and streaming is downloaded. Upload grows with video calls, cloud backups, CCTV and file sharing, so choose the video-call profile or raise the upload figures if those are common at your site.
How much bandwidth does a hotel or hotspot need?
Enter the number of guest devices you expect at peak (often more than the number of guests), an evening concurrency figure and the video-streaming profile for a cautious estimate. Per-user speed limits then let that line serve everyone fairly.
Is the result guaranteed?
No - it's a planning estimate based on the assumptions shown. Actual usage depends on apps, video quality, time of day and the line's real performance. Test at busy times after installation and adjust.
How do I stop one user using all the bandwidth?
Set a per-user speed limit on your router or hotspot controller. With WiFiNexa you set upload and download speeds per plan or per user, add time and data limits, and see usage in reports.