Part-Fibre (FTTC)
Fibre reaches the street cabinet, then the final section normally uses copper telephone wiring. Distance and copper-line condition can reduce the speed delivered to the home.
UK broadband speed calculator
Choose a practical broadband speed for your household
Calculate for simultaneous streaming, gaming, home working and downloads, then compare the connection types available at your address.
Check your address first
Check which broadband packages are available at your postcode
Your calculated speed tier is useful only if the right network reaches your home. Check full-fibre, cable, part-fibre and other available options before choosing a package.
Interactive calculator
Calculate a practical broadband speed tier
Select your household size and the activities that regularly happen at the same time. The result includes spare headroom for background devices, Wi-Fi overhead and busy periods.
Recommended package tier
50 Mbps
For a two-person household with no high-demand activities selected, 50 Mbps leaves modest headroom for browsing, HD streaming and routine updates.
Busy-hour estimate43 Mbps
Suggested upload5-10 Mbps
Planning estimate: this calculator sizes for a busy household period; it does not promise a particular provider speed or replace an address-level availability check.
Package decision
Which broadband speed tier should you choose?
Choose for the household's busiest hour, not quiet browsing. Most light homes fit within 50-150 Mbps, busy families commonly benefit from 150-500 Mbps, and gigabit is mainly useful for very large downloads, creator uploads and substantial future headroom.
Why the household's busiest hour changes the answer
Three simultaneous 4K streams use about 75 Mbps before browsing, app updates and smart devices are counted. Add 10 Mbps of background download demand, then keep 25% spare capacity for bursts and Wi-Fi overhead.
3 × 4K streams75 Mbps
Background use+10 Mbps
25% headroom×1.25
Practical target≈106 Mbps
Upload is a separate bottleneck: a camera using 10 Mbps upstream would consume half of a 20 Mbps upload allowance. If cloud backup fills the rest, acknowledgement traffic and real-time calls can queue even while download capacity remains.
| Speed tier | Good fit for | Typical busy-hour pattern | Upload to look for | Check before buying |
|---|---|---|---|---|
| 50 MbpsLight-use baseline |
|
Browsing, email, one HD stream and routine updates. | 5-10 Mbps | Several 4K streams or large downloads will quickly use the available headroom. |
| 150 MbpsStrong general baseline |
|
Video calls, 4K streaming, browsing, cloud documents and console use. | 20-50 Mbps | Check loaded latency if cloud sync or camera uploads cause call or gaming lag. |
| 300-500 MbpsFamily sweet spot |
|
Several 4K streams, remote work, game updates and regular downloads at once. | 50 Mbps+ | Your router, Wi-Fi coverage and device capability must be able to deliver the extra speed. |
| 900 Mbps / gigabitMaximum headroom |
|
Rapid game downloads, large cloud transfers, many active devices and multiple high-demand users. | 100 Mbps+ or symmetrical | Old Wi-Fi, 1GbE overhead, slow devices and remote servers can prevent a single device reaching the headline rate. |
Download reality
What faster broadband changes in real life
Large downloads are where higher tiers are easiest to notice. These are approximate ideal times before Wi-Fi overhead, server limits and other household traffic are included.
| File or task | 50 Mbps | 150 Mbps | 300 Mbps | 500 Mbps | 900 Mbps |
|---|---|---|---|---|---|
| 10GB film or project file | ~27 min | ~9 min | ~4.5 min | ~2.7 min | ~1.5 min |
| 50GB project file | ~2 h 13 min | ~44 min | ~22 min | ~13 min | ~7 min |
| 100GB game patch | ~4 h 27 min | ~1 h 29 min | ~44 min | ~27 min | ~15 min |
| 250GB game library restore | ~11 h 7 min | ~3 h 42 min | ~1 h 51 min | ~1 h 7 min | ~37 min |
50 Mbps line≈6.25 MB/s
150 Mbps line≈18.75 MB/s
500 Mbps line≈62.5 MB/s
900 Mbps line≈112.5 MB/s
Mbps and MB/s are different: advertised broadband uses megabits per second; file-transfer screens often show megabytes per second. Divide Mbps by eight for the theoretical maximum before protocol and Wi-Fi overhead.
Reality check: a 900 Mbps package does not guarantee every game platform, cloud service or Wi-Fi device will transfer at 900 Mbps.
UK connection terminology
Part-fibre, full-fibre, cable and copper explained
Do not compare packages on Mbps alone. The connection technology affects upload capacity, consistency, fault risk and how much speed is likely to reach the property.
Full-Fibre (FTTP)
Fibre runs to an optical network terminal inside the property. It supports higher speed tiers and removes the copper final leg used by part-fibre services.
Cable
A cable network can use fibre to the local area and coaxial cable into the home. It can deliver gigabit-class download speeds, but upload profiles may remain lower than the download rate.
Copper / ADSL
Legacy copper broadband runs over older telephone-line infrastructure. It is being progressively replaced as the UK moves towards full-fibre and is poorly suited to demanding modern household use.
How major UK networks deliver these tiers
BT, Sky and other Openreach retailers
Where full-fibre is available, providers can sell packages over Openreach's fibre-to-the-premises network. Package speed, upload profile, router and support still differ by retailer.
Virgin Media
Many addresses use Virgin Media's hybrid fibre-coaxial network, while newer areas can use full-fibre. Check the stated network type and upload speed rather than assuming every gigabit package is technically identical.
Hyperoptic and Community Fibre
Independent full-fibre networks can offer high or symmetrical upload speeds on selected packages. Availability is highly address-specific, so postcode checking is essential.
Upload matters: two packages advertised at 500 Mbps download can feel different if one has 50 Mbps upload and the other is symmetrical. Check the complete speed profile before switching.
Hardware and loaded performance
Why a 900 Mbps package may not reach every device
Buying more line speed does not remove local Wi-Fi, device or router limits. Test the connection over Ethernet before deciding the broadband package is too slow.
Older Wi-Fi 5 hardware
An older router or client device may deliver only part of a gigabit package once radio overhead, interference and distance are included.
Thick walls and poor placement
Brick, stone, foil-backed insulation and distant rooms can weaken Wi-Fi. A better router position, mesh system or Ethernet backhaul may help more than a faster package.
Ports and device limits
A 1GbE connection has protocol overhead, while older laptops, TVs and phones may have slower network hardware. One device may therefore test below the advertised line rate.
Upload saturation and bufferbloat
Cloud backups, camera uploads and file sharing can fill the upstream side, causing calls and games to lag. Loaded latency can matter more than another download-speed upgrade.
If Ethernet speeds are healthy but gaming still lags, consult the full UK ISP peering and routing matrix to analyse network-core routing differences.
Evidence first
Test before paying for a faster package
Separate a genuine line-capacity problem from weak Wi-Fi, saturated upload or unavailable local infrastructure.
Run a wired baseline
Use the LinkSpeed broadband speed test over Ethernet beside the router. If Ethernet is healthy but another room is slow, fix the home network first.
Measure performance under load
Run the LinkSpeed bufferbloat test while another device streams or uploads. Large latency spikes point to queueing or upload pressure.
Check what your address can order
Use the broadband availability checker to compare full-fibre, cable and other options that actually reach your postcode.
Useful next steps
Continue with the check that matches your result
Broadband speed FAQs
Is 150 Mbps enough for working from home?
Yes for many homes, especially with one or two video calls. Upload speed and loaded latency matter as well: cloud backups, security-camera uploads or another call can make a low-upload connection lag even when its download speed is 150 Mbps.
Why is my internet slow at night even on a 500 Mbps package?
That usually points to bufferbloat, weak Wi-Fi, peak-time contention, saturated upload, router queueing or a poor route to the service. A high download result does not guarantee low latency under load. Use the slow internet at night troubleshooting guide when the problem appears mainly during evening hours.
How much broadband speed does a family need?
Many families fit in the 150-500 Mbps range, but the right tier depends on simultaneous use. Multiple 4K streams, calls, consoles, cloud backups and large downloads need spare capacity during the household's busiest hour.
Do I need gigabit broadband for gaming?
Not for active gameplay. Gigabit broadband mainly shortens large game and patch downloads and leaves more household headroom. Ping, jitter, packet loss and loaded latency decide match responsiveness.
Is upload speed important for normal homes?
Yes. Video calls, photo backups, smart cameras, file sharing, livestreaming and remote work all use upload. A low-upload connection can feel unstable even when its advertised download speed is high.
Should I buy the fastest package available?
Not automatically. Buy the tier that solves the measured bottleneck. If Ethernet is already fast but one room is slow, improve router placement, Wi-Fi coverage or Ethernet backhaul before paying for more Mbps.
Ready to check the broadband speed tiers and connection types available at your address?
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