Broadband in Cardiff
In Cardiff (Wales), 78.4% of homes can get full-fibre broadband and 91.8% can get a gigabit-capable connection, according to Ofcom’s Connected Nations July 2024 data. That is 11 percentage points above the UK full-fibre average and 10 points above the UK gigabit average. Coverage is measured across 159,509 residential premises.
- Full-fibre (FTTP)
- 78.4%
- UK 67%
- Gigabit-capable
- 91.8%
- UK 82%
- Superfast (30+ Mbit/s)
- 99.1%
- Ultrafast (100+ Mbit/s)
- 92.7%
- Below USO (no decent broadband)
- 0.0%
- Gera Broadband Index
- 84.7/100
- rank 79/361
Broadband availability in Cardiff (July 2024)
| Connection type | % of premises in Cardiff | UK |
|---|---|---|
| Full-fibre (FTTP) | 78.4% | 67% |
| Gigabit-capable | 91.8% | 82% |
| Ultrafast (100+ Mbit/s) | 92.7% | — |
| Superfast (30+ Mbit/s) | 99.1% | — |
| Below USO (can’t get decent broadband) | 0.0% | — |
The Gera Broadband Index (GBI) is a transparent composite over these real Ofcom figures: GBI = 0.45 × gigabit% + 0.30 × full-fibre% + 0.20 × superfast% − 1.5 × below-USO%, clamped to 0–100. It is derived, not an Ofcom-published number. The UK median GBI is 77.4.
Areas with similar broadband coverage
- Watfordfull fibre 77.0%
- East Riding of Yorkshirefull fibre 87.1%
- Lincolnfull fibre 81.9%
- Exeterfull fibre 78.7%
- Mertonfull fibre 74.1%
- Thurrockfull fibre 77.2%
Frequently asked questions
- Can I get full-fibre broadband in Cardiff?
- In Cardiff, 78.4% of residential premises can get full-fibre (FTTP) broadband, according to Ofcom's Connected Nations July 2024 data. Across the UK, full-fibre reaches 67% of premises.
- Is gigabit broadband available in Cardiff?
- Gigabit-capable broadband is available to 91.8% of premises in Cardiff (Ofcom Connected Nations July 2024). The UK average gigabit availability is 82%.
- What broadband speeds can most homes get in Cardiff?
- 99.1% of homes in Cardiff can get superfast broadband (30 Mbit/s or faster) and 92.7% can get ultrafast (100 Mbit/s or faster), per Ofcom's July 2024 figures.
- How many homes in Cardiff cannot get decent broadband?
- 0.0% of premises in Cardiff fall below the Universal Service Obligation, meaning they cannot yet get a "decent" broadband connection (at least 10 Mbit/s download) on the network, according to Ofcom Connected Nations July 2024.
- How does Cardiff rank for broadband in the UK?
- Cardiff ranks 79 of 361 UK local authorities on the Gera Broadband Index (GBI 84.7 of 100), a transparent composite of Ofcom's real gigabit, full-fibre and superfast availability figures, with a penalty for premises below the Universal Service Obligation. The UK median GBI is 77.4.
Reference period: July 2024 (Ofcom Connected Nations 2024, latest published edition). Source: Ofcom — Connected Nations 2024, fixed broadband coverage by local and unitary authority (file 202407_fixed_laua_res_coverage_r01.csv). Contains public sector information licensed under the Open Government Licence v3.0. © Ofcom. Licensed under the Open Government Licence v3.0.