Independent London broadband guidance Coverage · Networks · Speeds

Is 67 Mbps
fast enough?

A practical step up. Understand the capacity, the waiting time and the limits of a 67 Mbps broadband connection.

67Mbps download capacity

19m 55s for a 10 GB file at ideal full line rate. Actual transfer times vary.

The practical answer

At 67 Mbps, two 4K streams and two 1080p calls total 36 Mbps of modelled download demand. Adding our 25% margin brings that example to 45 Mbps, leaving some space on a connection actually delivering 67 Mbps.

When 67 Mbps makes sense

An FTTC package advertised around this tier may deliver a lower line-specific speed. Large game downloads remain a patience test: a 50 GB file takes about 100 minutes at an ideal 67 Mbps.

Compare the exact address estimate, advertised average, upload speed and any minimum-speed commitment. The same speed tier can be sold on different networks with different installation requirements and contract terms.

How many devices can it support?

There is no fixed number of devices attached to 67 Mbps. The meaningful number is how much bandwidth your active tasks use at the same time. A sleeping phone, a television streaming 4K and a computer downloading an update create very different demands.

Our planner uses 15 Mbps for a Netflix 4K stream, 3 Mbps down and 3.8 Mbps up for a Zoom 1080p call, and a labelled allowance for everyday browsing. It adds 25% to activity demand. Use it to compare a realistic evening in your household, then consider Wi-Fi and upload capacity separately.

Plan your household

Less waiting. More doing.

See how connection speed changes the time to download a file.

19m 55sIdeal transfer at the selected line rate
23m 25sIllustration at 85% usable throughput
100 Mbps13m 20s
500 Mbps2m 40s
1 Gbps1m 20s

Bars show ideal waiting time relative to 100 Mbps. Calculation: GB × 8,000 ÷ Mbps. The usable-throughput adjustment is an example you choose, not a forecast. Server limits, Wi-Fi, other users and overheads can increase the real time.

A practical step up for simultaneous use

Two 4K streams use 30 Mbps at Netflix’s recommended 15 Mbps per stream. Add an illustrative 4 Mbps video-call allowance and 5 Mbps for browsing, and the example reaches 39 Mbps. A 25% planning margin brings it to just under 49 Mbps.

That example shows why a stable connection around this tier can serve a modest household well. It is not a maximum device count: actual use changes over time, and a large transfer can fill whatever spare capacity remains.

Why 67 Mbps still feels slow for big files

An ideal 10 GB transfer takes almost 20 minutes at 67 Mbps, and a 50 GB download takes about one hour 40 minutes. A household may find daily browsing perfectly responsive while still wanting a faster tier for game installations.

If waiting for occasional large downloads is acceptable, improving Wi-Fi or controlling the timing of uploads may be better value than buying much more download capacity.

Compare an upgrade on total cost

This speed is often associated with part-fibre offers, but the underlying technology and address estimate should be checked rather than inferred from the number. A full-fibre package can also be sold at a lower speed.

When full fibre is orderable, compare the full contract cost and upload rate, including installation and annual price changes, instead of assuming a familiar speed tier is the cheapest choice.

What the speed number cannot tell you

  • Wi-Fi coverage: walls, router placement, interference and client hardware can limit what arrives in a room.
  • Upload performance: sharing files and cloud backups need capacity in the opposite direction.
  • Gaming response: latency, jitter and packet loss are separate from the download headline.
  • Availability: a network serving your borough may still need to connect your building or individual flat.

Your questions, answered.

Can 67 Mbps handle working from home?

It can be sufficient for ordinary browsing and video meetings if the connection is stable and the upload rate suits your work. Multiple calls, backups and other household activity should be considered together.

Is a 67 Mbps package always part fibre?

No. Speed and connection technology are different attributes. Check whether the specific offer is FTTC, FTTP or another technology.

Sources & further reading

Official information behind this guide. Links checked 29 October 2026; individual datasets retain their stated reference dates.

  1. Choose the right broadband for your needs (opens in a new tab)Ofcom
  2. Improving your Wi-Fi experience (opens in a new tab)Ofcom
  3. Netflix-recommended internet speeds (opens in a new tab)Netflix Help Centre
  4. Zoom Web App system requirements (opens in a new tab)Zoom Support