Home Reports 2025 Global Japan

Internet Speed Report Japan June 2025

A comprehensive analysis of broadband performance in Japan based on real user speed tests conducted on Bandwidth Place.

Total Tests

78

Avg. Download

231.39Mbps

Avg. Upload

298.43Mbps

Avg. Ping

31.3ms

Top Internet Providers

Provider Avg Speed
BIGLOBE Inc. 138.1 Mbps
Jupiter Telecommunication Co. Ltd 293.2 Mbps
Softbank BB Corp. 141.8 Mbps
OPTAGE Inc. 740.5 Mbps
Kddi Corporation 133.3 Mbps
BTV Cable television 297.9 Mbps
BIGLOBE Inc. 119.1 Mbps
NTT Communications Corporation 164.2 Mbps
ARTERIA Networks Corporation 155.6 Mbps
Softbank BB Corp. 1,267.9 Mbps

Top Devices

Device Share
iPhone 9.0%
iPhone 3.8%
Generic Smartphone 1.3%
iPhone 1.3%
iPhone 1.3%

Top Browsers

Browser Share
Chrome 21.8%
Chrome 20.5%
Chrome 11.5%
Mobile Safari 9.0%
Safari 5.1%
Firefox 5.1%
Mobile Safari 3.8%
Chrome 2.6%
Firefox 2.6%
Chrome 1.3%

Analysis Methodology

The data presented in this report is aggregated directly from real user speed tests performed on the Bandwidth Place platform testing network nodes globally during 2025. We calculate the localized metrics using strict data sanity checks to prevent skewed results from anomalies or extreme outliers.

SEO & Location Routing Structure: Because location data is structurally rigid, caching data dynamically to static hierarchy (Country -> State -> City) provides significant improvements to PageSpeed metrics and Time to First Byte (TTFB). This strategy ensures optimum indexing for search engines processing localized queries.