StudioWavePro — Online Audio Editor with 48+ Studio Tools

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StudioWavePro’s Audio Merger takes any number of audio files and joins them end-to-end into a single track. Drop in MP3, WAV, OGG, M4A or FLAC files, drag the list to reorder them, and merge — the output is one continuous WAV ready to download. Files with different sample rates, channel counts, or formats are automatically conformed so everything plays back consistently.

No watermark, no signup, no length limit. The merge is bit-accurate and the order is yours to control. For seamless transitions between clips (think DJ mix or audio drama) check the Crossfade Joiner instead — same idea but with overlapping fades between each pair.

When to use

Combine separate recordings of a podcast intro, body, and outro into one publishable file.
Stitch together multiple voice memos into a single shareable track.
Merge tracks from an album or compilation into one continuous file.
Join speech segments recorded in separate takes into one final voiceover.
Combine multiple audio samples into one demo reel.
Concatenate audiobook chapters into a single long file for easier transfer.

How to use

Click "Open Audio Merger" below to launch the editor.
Drop the first file in — this becomes the base track and the start of the merged output.
In the merger panel, click "Add" to drop in additional files. Each one appears as a row showing its duration, sample rate, and channel count.
Drag the rows to reorder them. The first row plays first in the output.
Click "Merge N files" — the tool conforms each file to match the base, joins them in order, and replaces the working track with the result. Then download as WAV or MP3.

Tips

Files with different sample rates (44.1 vs 48 kHz) are automatically resampled to match the first file. No quality loss for the first file; minor (inaudible) resampling for the rest.
For smooth transitions between clips, use the Crossfade Joiner instead — it overlaps the end of each clip with the start of the next for a gapless feel.
If you want a small silence between clips, use Silence Gap Inserter after merging.
The first file (the one already loaded) sets the format for the merged output. If you have a "master" file with the desired sample rate, load it first.
For batch combining many files, drag-select multiple in the file picker — they all load at once and you can reorder before merging.

Frequently asked questions

How many files can I merge at once?: No hard limit. The tool has been tested with 20+ files in one merge. Very large totals (hours of audio combined) may slow down depending on your computer’s memory.
Can I merge files in different formats?: Yes — MP3, WAV, OGG, M4A and FLAC can all be mixed and merged. The tool decodes each one and conforms them to the same sample rate and channel count before joining.
What if my files have different sample rates?: They’re automatically resampled to match the base track (the first file you load). Resampling uses high-quality interpolation — the difference is inaudible in nearly all cases.
Will there be a gap or silence between merged files?: No — files are joined sample-accurate, end-to-end with no gap. If you want a deliberate pause between them, use the Silence Gap Inserter after merging, or use Crossfade Joiner for overlapping transitions instead.
How do I add a crossfade between clips?: Use the Crossfade Joiner tool instead of Audio Merger. It does the same job but overlaps each pair of clips by a configurable amount so transitions feel natural.
Will merging lose audio quality?: WAV output is bit-perfect for the base file; other files undergo lossless resampling if needed. No re-encoding compression artifacts.
Can I reorder files after adding them?: Yes — drag the rows in the file list to set the order. The output joins them top-to-bottom, so whatever you put first plays first.

StudioWavePro is a complete audio editor with 48+ studio-grade tools in one workspace. Trim, master, EQ, time-stretch, denoise, remove vocals, detect BPM and musical key, generate metronomes, and more. Editing tools

Audio Trimmer — crop a track to a selected region

Mute Section — silence a selected region

Reverse Audio — play the track backwards

Fade In/Out — ramp volume at start or end

Silence Trimmer — strip leading and trailing silence

Silence Gap Inserter — insert silence at a chosen position

Audio Looper — repeat a section N times

Audio Splitter — cut a track into multiple parts

Audio Merger — join multiple files end-to-end

Silence Splitter — auto-split at silent gaps

Crossfade Joiner — join clips with overlapping fades

Time and pitch

Speed Changer — speed up or slow down (with optional pitch preservation)

Pitch Shift — change pitch without changing tempo

Tempo Detector — estimate the BPM of a music track

Key Detector — estimate the musical key

Metronome Generator — create a click track at any BPM

Effects

Volume — make a track louder or quieter

Bass Boost — lift the low end

Treble Boost — lift the high end

Low Pass Filter — cut off high frequencies

High Pass Filter — cut off low frequencies (remove rumble)

Equalizer (3-band) — low / mid / high tonal shaping

Equalizer (10-band) — fine-grained tonal control

Echo — add repeating echoes / delay

Distortion — overdrive, fuzz, and lo-fi grit

Stereo Balance — shift the L/R center of a stereo mix

Stereo Widener — make stereo narrower or wider

Vocal Remover — karaoke (center-channel removal)

Hum Remover — strip 50/60 Hz mains hum

Mastering and analysis

Normalize — maximize volume without clipping

Compressor — even out loud and quiet parts

Loudness Meter — measure peak, RMS, and LUFS

Mono Converter — collapse stereo to mono

Channel Extractor — pull L, R, Mid, or Side

Sample Rate Converter — resample to 44.1, 48, or 96 kHz

Polarity Inverter — flip waveform for phase alignment

DC Offset Remover — center waveform around zero

Audio Visualizer — render an animated video from audio

StudioWavePro supports MP3, WAV, OGG, M4A, and FLAC files. Exports include WAV and MP3. This app requires JavaScript to run. Please enable JavaScript in your browser.