KDDI au Speed Test
Slow KDDI au connection in Japan, or just checking? This test measures your download, upload, ping and jitter in seconds, so you can see what you are actually getting.
Testing your KDDI au connection in Japan. Results measure the path to the KDDI au test server and may vary with server capacity and network conditions.
Detecting your provider…
Streaming
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Video calls
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Gaming
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Your recent KDDI au speed tests
Your KDDI au results will appear here after your first test.
Saved only in this browser. Showing only KDDI au tests on this page.| Date | Download | Upload | Ping | Jitter |
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ⓘ Results measure your connection to the KDDI au test server.
About this KDDI au Speed Test
Wondering if your KDDI au plan gives you what you pay for? This test measures the speed between your device and the test server, so you get a real number for your Mobile + Broadband connection in Japan.
What is a good KDDI au speed?
There is no single good speed - it depends on your home. One person streaming needs far less than a family of five on video calls. As a rule of thumb: 50 Mbps covers most homes, 100+ Mbps covers heavy use, and steady low ping matters more than a big download number for gaming.
- Download & upload
- Download speed is how fast data comes in - streaming, browsing, updates. Upload speed is how fast data goes out - video calls, cloud backups. Both are measured in Mbps, megabits per second.
- Ping & jitter
- Ping is the delay before data starts moving, in milliseconds. Low ping means a snappier connection - it matters most for gaming and video calls. Jitter is how much your ping jumps around. Steady beats jumpy.
- How to get an accurate result
- Use a cable if you can, pause other downloads, and run the test twice. Wi-Fi almost always reads lower than a wired test.
KDDI au speed test: FAQs
- How do I test my KDDI au internet speed?
- Press GO above. The test measures your download speed, upload speed, ping, and jitter in about 10 seconds. For the truest number, use an Ethernet cable if you can, close other downloads, and run it twice.
- What is a good KDDI au speed test result?
- There is no single good speed - it depends on your home. One person streaming needs far less than a family of five on video calls. As a rule of thumb: 50 Mbps covers most homes, 100+ Mbps covers heavy use, and steady low ping matters more than a big download number for gaming.
- Why is my KDDI au speed slower than my plan?
- Most of the time it is the Wi-Fi, not the line. Where your router sits, how old your devices are, how many are connected at once, and busy evening hours all pull the number down. Plug a cable straight into the router and test again - if that is fast and Wi-Fi is not, your Wi-Fi is the bottleneck.
- Does this test work if I am not a KDDI au customer?
- Yes. It tests whatever connection you are on right now - your provider does not matter. We show the provider we detect under the test panel.
- How does provider detection work on this page?
- When the page loads, we look up your IP address to guess your internet provider and show it under the test panel. It never blocks the test, and nothing personal is stored. Your results stay in your own browser.
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