Media Studio · 29 tools
Audio Tools
30 free audio tools: trim, convert, merge, normalise, change speed or pitch, record your voice and test speakers and microphones in the browser.
Part of Media Studio.
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Audio Converter
Re-encode audio to WAV, WebM/Opus or OGG using only your browser
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Audio Trimmer
Cut and trim MP3, WAV, OGG or M4A audio using a visual waveform with live preview and WAV export — nothing is ever uploaded.
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Audio Merger
Join two or more audio files into one continuous track in the order you choose, then download the result as a WAV file.
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Online Voice Recorder
Record your voice or any microphone input straight in the browser, play it back and download it — nothing is uploaded.
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Text to Speech
Turn text into spoken audio with your device
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Audio Channel Splitter
Split a stereo file into two separate mono WAV files — one for the left channel and one for the right — in a single click.
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Audio Fade In & Out
Add a smooth fade in at the start and a fade out at the end of any audio file, with the fade length and curve you choose.
All audio tools
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Audio Merger
Join two or more audio files into one continuous track in the order you choose, then download the result as a WAV file.
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Audio Trimmer
Cut and trim MP3, WAV, OGG or M4A audio using a visual waveform with live preview and WAV export — nothing is ever uploaded.
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Audio Channel Splitter
Split a stereo file into two separate mono WAV files — one for the left channel and one for the right — in a single click.
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Audio Fade In & Out
Add a smooth fade in at the start and a fade out at the end of any audio file, with the fade length and curve you choose.
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Audio Loop Maker
Extract one section of an audio file and repeat it a chosen number of times to build a loop you can download as a WAV.
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Audio Normalizer
Normalize audio so its loudest peak lands on a target dBFS level, evening out quiet recordings without uploading a byte.
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Audio Pitch Shifter
Shift the pitch of any audio up or down by semitones while keeping the original length, for transposing songs and vocals.
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Audio Reverser
Play any audio file backwards and export the reversed track as a WAV — perfect for backmasking and sound design experiments.
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Audio Sample Rate Converter
Resample audio to 8, 16, 22.05, 32, 44.1, 48 or 96 kHz with the browser
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Audio Silence Remover
Automatically strip silent gaps below a threshold you set from podcasts, voice notes and recordings, and see the time saved.
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Audio Speed Changer
Speed audio up or slow it down from 0.25x to 4x, either the classic way that shifts pitch or with the pitch preserved.
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Audio Volume Changer
Raise or lower the volume of an audio file by a precise amount in decibels, with a clipping warning before you export.
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Microphone Tester
Check that your microphone works with a live input level meter, peak reading and a list of the input devices available.
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Mono to Stereo Converter
Convert stereo audio down to mono or expand a mono track to stereo, with a left/right balance control, fully offline.
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Ringtone Maker
Trim any song down to a 30-second ringtone-length clip with fades, preview it, and download it ready for your phone.
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Audio Converter
Re-encode audio to WAV, WebM/Opus or OGG using only your browser
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Audio to Base64 Converter
Convert an audio file into a Base64 data URI you can paste into HTML or CSS, and turn a data URI back into a playable file.
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Audio to WAV Converter
Convert MP3, M4A, OGG, FLAC, WebM or any decodable audio into an uncompressed 16-bit PCM WAV file with no upload.
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Online Voice Recorder
Record your voice or any microphone input straight in the browser, play it back and download it — nothing is uploaded.
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Hearing Frequency Test
Step through a frequency sweep from 500 Hz to 20 kHz to find roughly where your hearing rolls off. For curiosity only.
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Speaker & Headphone Tester
Check your speakers or headphones by playing test tones through the left channel, the right channel or both at a safe level.
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Text to Speech
Turn text into spoken audio with your device
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Audio Metadata Viewer
Inspect an audio file
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Audio Spectrum Analyzer
Watch a live FFT frequency spectrum of your microphone or of an audio file you load, drawn in real time on a canvas.
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Binaural Beat Generator
Play two slightly different tones, one in each ear, to create a binaural beat at the offset you pick. Not a medical device.
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BPM Detector
Estimate the tempo of a song in beats per minute using onset energy analysis of the low frequencies, entirely in-browser.
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Noise Generator
Generate white, pink or brown noise for testing speakers, masking distractions or sound design, with WAV export.
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Tone Generator
Generate a pure sine, square, sawtooth or triangle tone at any frequency, play it live and export it as a WAV file.
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Waveform Viewer
Render the waveform of any audio file and read its duration, sample rate, channel count and peak level with no upload.
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About Audio Tools
This category has 30 audio tools, from simple cuts to sound checks. The Audio Trimmer shows a waveform so you can cut exactly where a sentence or beat ends, the Audio Converter re-encodes files to WAV, Opus or OGG, and the Ringtone Maker turns a song into a short clip with fades. Other tools normalise loudness, remove silence, change speed or pitch, reverse a clip, merge several files or split stereo channels.
There are also tools for checking equipment and learning about sound. The Microphone Tester shows a live level meter, the BPM Detector estimates the tempo of a track, and the tone and noise generators produce test signals you can download as WAV. Audio is decoded and processed in your browser, so recordings and songs are not uploaded. MP3 output and rare formats such as AMR or WMA use an optional ffmpeg download of about 30 MB that only loads when you tick it.
Frequently asked questions
Why is MP3 not a default output?
Is the hearing test a medical test?
Can I record my voice without an app?
How accurate is the BPM detector?
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