Internet Speeds in Japan
🇯🇵 Japan broadband benchmarks: median download, upload, ping, fibre penetration, and the ISP pages to check before choosing a plan.
Japan Internet Speed Snapshot
What Internet Is Like in Japan
Japan has among the world's best broadband infrastructure, with NTT, KDDI (au Hikari), SoftBank (Yahoo! BB), and Nuro competing for subscribers. Japan pioneered optical fibre deployments and today has over 82% FTTH penetration. Japan consistently ranks top 5 globally for both fixed and mobile internet speeds.
NTT (Nippon Telegraph and Telephone) owns and operates Japan's primary fibre infrastructure through NTT East and NTT West. KDDI and SoftBank use NTT's wholesale fibre to deliver competing services. Nuro (Sony Network) operates its own independent FTTH network offering speeds up to 10 Gbps.
Top ISP Speed Tests in Japan
Provider pages include typical download speed, upload speed, ping, plan notes, common issues, and troubleshooting steps. Use them with your own test results to see whether your connection is limited by your plan, Wi-Fi, or the wider provider network.
| Provider | Download | Upload | Ping | Technology | Details |
|---|---|---|---|---|---|
| NTT Flets Hikari | 620 Mbps | 590 Mbps | 4 ms | FTTH (GPON/XGS-PON), 10G Fiber | View speed test → |
| au Hikari (KDDI) | 600 Mbps | 570 Mbps | 5 ms | FTTH (own + NTT line), 5G Fixed Wireless | View speed test → |
| SoftBank Hikari | 570 Mbps | 540 Mbps | 5 ms | FTTH (via NTT line), 5G Fixed Wireless | View speed test → |
How to Compare Your Result Against Japan
- Run a wired speed test first so Wi-Fi does not hide your real line speed.
- Compare download and upload separately; many plans have strong download but weak upload.
- Check ping and jitter if gaming, video calls, VPNs, or remote desktop feel sluggish.
- Test again in the evening to see whether peak-hour ISP congestion is affecting you.
- Compare your ISP page against the country median before upgrading or switching.
Japan Broadband Notes
- Japan has 82% FTTH penetration - Among the highest in the world
- Nuro offers up to 10 Gbps residential fibre plans
- NTT East/West operate one of the world's largest FTTH networks
- Japan's median upload speed (243 Mbps) is among the highest globally