Home Reports 2025 Global Japan

Internet Speed Report Japan August 2025

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

Total Tests

139

Avg. Download

253.72Mbps

Avg. Upload

287.84Mbps

Avg. Ping

28.2ms

Top Internet Providers

Provider Avg Speed
BIGLOBE Inc. 143.8 Mbps
NTT Communications Corporation 183.0 Mbps
BIGLOBE Inc. 145.6 Mbps
Jupiter Telecommunication Co. Ltd 429.7 Mbps
BIGLOBE Inc. 278.5 Mbps
OPTAGE Inc. 619.0 Mbps
Cellco Partnership DBA Verizon Wireless 211.6 Mbps
Softbank BB Corp. 546.1 Mbps
NTT Communications Corporation 146.7 Mbps
Kddi Corporation 407.3 Mbps

Top Devices

Device Share
iPhone 14.4%
iPhone 5.0%
Generic Smartphone 4.3%
Generic Smartphone 2.9%
iPhone 1.4%

Top Browsers

Browser Share
Chrome 30.2%
Mobile Safari 14.4%
Chrome 8.6%
Chrome 7.2%
Mobile Safari 5.0%
Chrome Mobile 4.3%
Chrome Mobile 2.9%
Chrome 2.9%
Chrome 2.9%
Chrome 2.9%

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.