How to use Audio Joiner
- Choose two to eight WAVs with matching sample rate and channel count.
- Use the file list Up and Down buttons to confirm the intended order.
- Enter Crossfade, or use zero for a direct join, then listen to the exported boundaries.
Example: Audio Joiner
Place two recordings one after the other.
Options
- Crossfade between files (seconds)
- Zero places the files sequentially without overlap. A positive duration overlaps consecutive clips and reduces the total by that duration at each boundary.
Supported inputs and limits
Where your input is processed
This tool processes your input in this browser. Your text and files are not uploaded to UseFreeTools. Check this tool's limits for anything it may save on your device.
Crossfade shortens the combined recording
An overlap mixes the end of one file with the start of the next. Two one-second files with a 0.25-second crossfade produce 1.75 seconds, not two seconds. Each source must be at least twice as long as the chosen fade so adjacent overlaps fit safely. The fade is linear rather than a loudness-matched transition.
Compatible inputs avoid hidden conversion
The joiner does not resample files or infer a channel mapping. Different sample rates or channel counts are refused. Output is PCM16 WAV and tags are not carried over. Use a separate conversion step where needed, then confirm both the order and audible join before keeping the download.
Questions about Audio Joiner
Will different sample rates be resampled?
No. Incompatible rates or channel counts are refused.
Why is a crossfaded join shorter?
Adjacent clips overlap by the entered fade duration.
Can I change the order?
Yes. Use the shared file ordering controls before processing.