Audio Latency Test is a browser lab for comparing tap-response delay, speaker-to-microphone round trips, and A/V sync across headphones, Bluetooth devices, and other audio setups.
External tool opens in a new tab.
What is this tool?
Measure perceived sound delay, headphone and Bluetooth lag, microphone round-trip latency, and audio/video sync directly in a browser.
Best for
Listeners, musicians, streamers, gamers, and support teams who need a quick browser estimate of sound delay and sync behavior.
Pricing note
The browser tests are presented as free and require no account. Microphone mode needs permission, and results are practical estimates rather than laboratory calibration.
Key features
Use cases
Compare wired headphones, Bluetooth earbuds, speakers, and different browser output paths.
Tune an audio offset for video playback, calls, games, or other timing-sensitive sessions.
Troubleshoot microphone round-trip delay and record repeatable latency and jitter results.
Pros
Cons
How to use
Open Audio Latency Test and choose Tap Test, Mic Round-Trip, or A/V Sync.
Set a comfortable BPM or connect the audio setup you want to compare.
Start the test, follow the beat or pulse, and review the average, jitter, and sample results.
Repeat with another device or setting and use the difference as a practical comparison.
FAQ
What modes does Audio Latency Test provide?
It provides Tap Test for perceived delay, Mic Round-Trip for a speaker-to-microphone check, and A/V Sync for tuning a visual and audio offset.
Can it measure Bluetooth headphone latency?
Yes. Run Tap Test or A/V Sync with Bluetooth headphones connected, then compare the result with a wired setup.
Do I need a microphone for every test?
No. Only Mic Round-Trip needs microphone permission and a speaker that the microphone can hear.
Is microphone audio uploaded?
The normal test flow analyzes the microphone signal locally in the browser and stops the stream when the test ends.
