Broadband Coverage in Cardiff
Compare broadband deals and check coverage across 171,426 premises. Data sourced from Ofcom Connected Nations December 2025.
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Is Full Fibre Broadband Available in Cardiff?
Based on the latest Ofcom Connected Nations data (December 2025), full fibre broadband (FTTP) is available to 81.5% of premises in Cardiff. This represents 139,679 properties out of a total of 171,426.
Cardiff has a "Very Good" broadband coverage rating. With 92.4% gigabit-capable coverage, most residents can access ultrafast speeds suitable for demanding applications like 4K streaming, online gaming, and remote working.
Key Broadband Statistics for Cardiff
Detailed Broadband Coverage Statistics
Comprehensive breakdown of broadband availability in Cardiff, including connection types and speed tiers. This data helps you understand what services are available before checking your specific postcode.
Broadband Coverage Rating
Based on full fibre availability
Full Fibre (FTTP)
81.5%Fibre to the premises - fastest available
139,679 premises covered
Gigabit Capable
92.4%1000 Mbps+ speeds available
158,416 premises covered
Superfast (30Mbps+)
98.2%Suitable for most households
168,287 premises covered
Ultrafast (100Mbps+)
93.6%Ideal for busy households
160,420 premises covered
Connectivity Challenges in This Area
- 0.3% cannot receive 10 Mbps download speeds
- 1.3% cannot receive 30 Mbps superfast speeds
If you cannot get 10 Mbps, you may be eligible for an upgrade under the Universal Service Obligation.
Speed Availability Breakdown
Understanding these speeds: Superfast (30 Mbps) handles HD streaming for 2-3 people. Ultrafast (100+ Mbps) suits busy households with multiple devices. Gigabit (1000 Mbps) future-proofs your home for any application.
Fixed Wireless Access (FWA)
51.1% of premises in this area can access Fixed Wireless broadband as an alternative to wired connections. FWA can be a good option where traditional fibre infrastructure is limited.
Broadband Deals in Cardiff
Compare the best broadband deals available in your area. Prices and availability may vary by postcode.
Gig2 Fibre Broadband + Netflix
- FREE setup
- Netflix (Standard with Ads)
- Hub 5x WiFi 6E router
Gig1 Fibre Broadband
- FREE setup
- Unlimited downloads
- Hub 5 WiFi 6 router
Full Fibre 900
- FREE setup
- Near-gigabit speeds
- UK-based support
Full Fibre 900
- FREE setup
- Stay Fast Guarantee
- £150 Reward Card
Full Fibre 900
- FREE setup
- Apple TV+ 6 months
- 5G backup included
Full Fibre 1600
- FREE setup
- Apple TV+ 6 months
- 5G backup included
Helpful Tips for Getting Broadband in Cardiff
Whether you're moving to Cardiff or looking to switch providers, these tips will help you make the best broadband choice for your household.
1. Always Check Your Exact Address
While Cardiff has 81.5% full fibre coverage overall, availability can vary street by street. Before committing to any deal, use each provider's postcode checker to confirm exactly which services and speeds you can get at your property.
2. Match Your Speed to Your Needs
Don't overpay for speeds you won't use. Based on typical household usage in Wales:
- 1-2 people: 30-67 Mbps handles HD streaming and video calls
- 3-4 people: 100-300 Mbps for multiple 4K streams and gaming
- 5+ people or power users: 500+ Mbps for busy households
Use our speed guide to calculate your exact requirements.
3. Consider Upgrading to Full Fibre
With 81.5% full fibre availability in Cardiff, there's a good chance you can upgrade from part-fibre (FTTC) to full fibre (FTTP). Full fibre offers:
- More reliable speeds that don't slow down during peak times
- Better upload speeds for video calls and cloud backups
- Future-proof technology as more services move online
Learn more about the difference between FTTC and FTTP.
4. Save Money on Your Broadband
Broadband prices in Cardiff vary significantly between providers. To get the best deal:
- Never auto-renew: Out-of-contract prices can be 40-60% higher
- Check altnet providers: Local full fibre providers often beat big brands on price
- Consider broadband-only: Skip the landline if you only use mobile phones
Read our guide on saving money on broadband bills.
5. Switching is Easier Than You Think
The One Touch Switch process makes changing broadband providers simple. Your new provider handles everything, including cancelling your old service. Most switches complete within 10-14 working days with minimal disruption.
Learn more in our guide to switching broadband.
Frequently Asked Questions About Broadband in Cardiff
Common questions about broadband coverage and availability in the Cardiff area.
About This Data
Broadband coverage statistics are sourced from Ofcom's Connected Nations report (January 2025). Data represents local authority-level coverage and may not reflect availability at specific addresses. Always check with providers directly for exact availability at your property.