Free Audio Tools Online
Short audio fixes should not require a full DAW: trim silence, join clips, fade edges, or normalize loudness before you upload a lesson or social clip. These tools run in the browser using what your device can decode. Keep everyday lengths reasonable for memory limits.
Audio tools process in your browser. Clips stay on your device for local edits.
Popular tools: Voice Recorder · Audio Trimmer · Audio Joiner · Reverse Audio · Audio Volume Adjuster · Trim Silence · Normalize Audio · Fade Audio In/Out · Merge PDF · Compress PDF
14 free online tools
Most popular
Highest-demand tools in this category.
Voice Recorder
Record microphone audio in your browser and download a WebM or WAV clip — nothing is uploaded.
Audio Trimmer
Audio Trimmer keeps the span between a start time and an end time and downloads a WAV. The end time must be later than the start time.
Audio Joiner
Audio Joiner places two or more clips one after another and downloads one WAV. Every clip must use the same sample rate, or the join stops.
Reverse Audio
Reverse an audio clip and download a WAV — fun effects and quick checks, private in-browser.
Audio Volume Adjuster
Raise or lower audio volume with a gain slider and download a WAV.
Trim Silence
Remove leading and trailing near-silence from an audio clip and download a WAV.
Normalize Audio
Peak-normalize an audio clip so the loudest sample hits a target level, then download WAV.
Fade Audio in/Out
Apply linear fade-in and fade-out to an audio clip and download a WAV.
Audio editing
Trim, join, fade, reverse, normalize, and related clip-level edits for short files.
Audio to Mono
Convert stereo (or multi-channel) audio to a single mono WAV by averaging channels.
Audio File Info
Inspect duration, channels, sample rate, peak, and RMS of an audio file in your browser.
Audio Channel Swap
Swap left and right channels on a stereo clip and download a WAV.
Beep Tone Generator
Generate a sine-wave beep or tone and download a WAV — no microphone needed.
Stereo Pan Audio
Pan audio left/right into a stereo WAV using a constant-power pan law.
Insert Audio Silence
Insert a stretch of silence at a chosen time and download a WAV.
Quick audio checklist
Match sample rates before joining clips or you will hear glitches. Trim silence before stitching. Normalize after edits if levels jump between segments.
Export formats depend on the tool and browser — download and spot-check headphones before publishing. Keep a WAV master when you will edit again.
For voice lessons, fade in/out reduces clicks at cut points.
Audio Tools FAQ
- What formats can I upload?
- Common browser-decodable formats such as MP3, WAV, OGG, M4A, and WebM — exact support depends on your browser.
- Is audio uploaded to FileToolsHub?
- Local audio tools process in your browser so the clip stays on your device.
- Why does a join sound wrong?
- Mismatched sample rates or abrupt cuts cause clicks. Convert/resample consistently and add short fades.
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