"Upload speed for streaming: how much headroom you really need"
Streaming is one of the few things most people do that leans on upload speed rather than download. Home connections are often lopsided - fast down, slow up - so the number that matters is the one most speed-test headlines skip.
Measure it properly
- Plug the streaming PC into the router with a cable if you can. Wi-Fi adds dips that a speed test can miss.
- Run a speed test at the time of day you usually stream, three times, and note the lowest upload result.
- Ideally, run a test stream for 20 minutes and watch your streaming software's dropped-frames counter.
Why not use all of it
Your connection's upload is shared with everything else: game traffic, Discord voice, cloud backups, someone else in the house uploading photos. Upload speed also wobbles minute to minute. A common rule of thumb is to keep your video stream at about 75% of your lowest measured upload. If your upload is 10 Mbps (10,000 kbps), that's about 7,500 kbps for everything the stream sends.
Then the platform decides too
Platforms set their own limits and recommendations, and they change, so check the current broadcasting guidelines for yours. Twitch's guidance for most channels has for years topped out around 6,000 kbps for 1080p at 60 fps; YouTube accepts higher bitrates. Sending more than a platform accepts doesn't help, and viewers on slow connections may struggle with very high bitrates if the platform doesn't transcode for them.
Typical H.264 ranges creators use:
| Setting | Typical video bitrate |
|---|---|
| 720p, 30 fps | 2,500-4,000 kbps |
| 720p, 60 fps | 3,500-5,000 kbps |
| 1080p, 30 fps | 3,500-5,000 kbps |
| 1080p, 60 fps | 4,500-6,000 kbps |
The bitrate calculator combines your upload with these ranges.
On a slow line
- Lower the resolution before the bitrate. 720p at a healthy bitrate looks far better than 1080p starved of data, which turns to blocks in every fast scene.
- Drop to 30 fps for slower games and talk streams.
- Stop background uploads: cloud sync, game updates, phones backing up photos.
- Talk to your provider. Many offer plans with faster upload, or fibre with symmetric speeds.
Signs you're over the limit
Dropped frames reported by your software, viewers seeing frequent buffering, and a stream that looks fine for minutes then freezes. If you see these, lower the bitrate by 10-20% and test again.