Free Online Audio Tools
4 tools · No signup · Works on any device
Convert, cut, speed up, and boost audio entirely online. All tools work on MP3, WAV, OGG, FLAC, AAC, and more. Upload your audio file, process it in seconds, and download the result. No installation required.
MP3 Converter
Convert WAV, OGG, FLAC, AAC, and M4A audio files to MP3 format.
Open toolAudio Cutter
Trim and cut audio files with precise start and end time controls.
Open toolAudio Speed Changer
Speed up or slow down audio playback from 0.5x to 3.0x.
Open toolVolume Booster
Boost or reduce audio volume by up to 20dB.
Open toolWhat Each Audio Tool Does
Full details on each audio tool and the best situations to use them.
MP3 Converter
Open →Convert any audio format to MP3 — the world's most universal audio format. Whether you have a WAV file that's too large to share, an OGG file that won't play on your phone, or a FLAC archive you want to make portable, our MP3 Converter handles it all. Choose from bitrates of 128 Kbps (small files for speech), 192 Kbps (good quality for music), and 320 Kbps (near-CD quality). Supported input formats include WAV, OGG, FLAC, AAC, M4A, WMA, and more.
- Convert WAV files from recording sessions to MP3 for sharing
- Convert FLAC library to MP3 for device storage limitations
- Convert OGG game audio to MP3 for use in other projects
Audio Cutter
Open →Trim and cut audio files with precise start and end time controls, down to the second. Remove silence at the beginning or end of a recording, extract a specific portion of a song, or cut a longer audio file into shorter segments. The cutter processes files on our server for accurate results — enter your start time, end time, upload, and download the trimmed clip. Works on all common audio formats.
- Remove dead silence from the start of a recording
- Extract a chorus or hook from a song for a ringtone
- Cut a podcast clip for sharing as a preview
Audio Speed Changer
Open →Speed up or slow down audio playback from 0.5x (half speed) to 3.0x (triple speed), with optional pitch correction. Listening to a lecture or podcast at 1.5x saves 33% of your time. Slowing speech to 0.7x can help language learners catch every word. Our speed changer uses high-quality time-stretching algorithms that change tempo without chipmunk effects (unless you want them — pitch correction can be disabled). Works with all audio formats.
- Speed up podcasts to 1.5x or 2x for faster consumption
- Slow down music for transcription or learning by ear
- Create slow-motion voice effects for videos
Volume Booster
Open →Increase or decrease audio volume by up to 20 dB. If you have a recording that's too quiet — a distant microphone, a phone recording in a noisy environment, or audio that was simply captured at a low gain level — our Volume Booster can raise it to a comfortable listening level. Reduce volume for audio that is too loud or to normalize levels before mixing. Supports all common audio formats with fast server-side processing.
- Boost quiet interview recordings for better clarity
- Normalize audio levels before combining in a video
- Reduce volume of music tracks for use as background audio
Supported Audio Formats
| Format | Extension | Type | Best For |
|---|---|---|---|
| MP3 | .mp3 | Lossy | Universal playback, sharing |
| WAV | .wav | Lossless | Editing, maximum quality |
| AAC | .aac / .m4a | Lossy | Apple devices, streaming |
| OGG Vorbis | .ogg | Lossy | Open source, web audio |
| FLAC | .flac | Lossless | Archiving, audiophile use |
| WMA | .wma | Lossy | Legacy Windows audio |
Tips for Best Results
Start from the highest quality source
If you have a WAV or FLAC original, always start from that when converting to MP3. Converting an already-compressed MP3 to another MP3 degrades quality further.
Use 320 Kbps for music, 128 Kbps for speech
Music has more detail and benefits from higher bitrates. Speech is intelligible at 128 Kbps and results in much smaller files, which matters for podcasts and audiobooks.
WAV for editing, MP3 for delivery
If you're going to cut, speed up, or further edit the audio, work with WAV to avoid cumulative quality loss. Convert to MP3 as the final step.
Check levels before boosting volume
Large volume boosts on quiet recordings also amplify background noise. If your recording has significant ambient noise, reducing that noise first (in a desktop editor) will give better results.
Normalize before combining tracks
When mixing multiple audio files together, normalize each one to the same volume level first using our Volume Booster. -1 dB is a good target to prevent clipping.
Use speed change for accessibility
Slowing audio to 0.7x–0.8x can make fast speakers much easier to follow. This is especially useful for language learners, transcriptionists, and listeners with hearing difficulties.