Upload speed: why it matters as much as download
Contents
Internet plans highlight download speed, but upload is often what explains a poor video call or a backup that never ends.
Upload: definition
Upload speed measures how much data your connection can send to the internet each second. Every time you share something, whether a photo, a video, your image in a call or a work file, upload is doing the job.
Uses that depend on upload
- Video calls: your camera sends a continuous stream of about 1.5 to 4 Mbps in HD.
- Remote work: sending documents, syncing shared folders, company VPN.
- Social media: posting a 500 MB video takes over 6 minutes at 10 Mbps and about 40 seconds at 100 Mbps.
- Cloud backup: phone photos and automatic backups.
- Security cameras: each camera viewed remotely sends a permanent stream.
- Live streaming: Twitch, TikTok Live or Instagram Live need stable upload of several Mbps.
Values to aim for
| Profile | Recommended upload |
|---|---|
| Light use (messaging, photos) | 2 to 5 Mbps |
| Regular video calls | 5 to 10 Mbps |
| Remote work, online classes for the family | 20 Mbps and more |
| Content creation, live, heavy cloud | 50 Mbps and more |
Upload by technology
- ADSL: structurally weak upload, often around 1 Mbps, its main weakness for remote work.
- VDSL2: better, from a few Mbps to about 10 to 20 Mbps on short lines.
- 4G / 5G: varies with coverage; upload is usually well below download.
- Fibre: by far the best upload. Depending on the plan, it may equal download or be lower; check your contract.
Full comparison: fibre or ADSL.
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The trap: saturated upload slows everything
When upload is used at 100%, for example during a cloud photo backup, the acknowledgements that downloads need are delayed. Browsing and video slow down too, and ping shoots up. If your connection becomes slow "for no reason", check that no device is sending large files. See slow internet: causes and fixes.
How to improve upload
- Test over a cable to rule out Wi-Fi.
- Schedule cloud backups at night.
- Lower the upload quality of security cameras.
- If you are on ADSL with regular video calls or file sending, fibre is the only real solution.
Sources and further reading
Frequently asked questions
Why is my upload much lower than my download?
Most technologies (ADSL, 4G, some fibre plans) are asymmetric: they give more capacity to receiving, the dominant use.
What upload do I need for Zoom or Teams?
About 2 to 4 Mbps of stable upload for an HD call. Plan more if several people are on calls at once.
Does upload affect ping?
Yes: saturated upload sharply increases latency for the whole connection.
The SpeedFibre team Guides written and reviewed by a telecom engineer specialised in fibre optics (FTTH), with more than 8 years of hands-on network maintenance and measurement. Editorial policy.
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