Headphone test
Test your headphones or speakers: left side, right side, bass, treble and whether the sound is swapped.
How to useTest your headphones.
Start with the volume low and turn it up gradually.
Bass and treble
Play a frequency and see how far you can hear.
Available in: 
Headphone test: what it is for
The headphone test plays separate sounds on the left side, the right side and both together, to check that your headphones are working and positioned correctly. It also has tones at several frequencies and a sweep from 20 Hz to 20,000 Hz.
Start with the volume low.
How to use
- Put on your headphones and turn the volume down.
- Play the left and right sounds.
- Try the frequencies and the sweep.
When to use it
- Checking whether one side of your headphones stopped working.
- Testing new headphones or speakers.
- Finding out up to what frequency you can hear.
Frequently asked questions
The left sound came out on the right
The sides are swapped: check that you put the right earbud in each ear (L is left, R is right) or that the speakers are on the correct sides.
I can't hear the lowest bass
That's normal: small headphones and laptop speakers don't reproduce anything below about 60 Hz well. Over time, everyone also loses hearing of the highest treble.
One side is quieter than the other
Check the sound balance in your system settings. If it persists, there may be dirt in the headphone jack or a faulty cable.
Is it really free?
Yes, 100% free. No sign-up, no subscription and no usage limits. All Tools123 are free.