TOOL DIRECTORY

Choose your audio task.

Focused tools for individual edits and ordered audio joins. Audio editors process files on your device with playback and downloads. The calculator estimates size without opening a file.

01 / BITRATE

MP3 Bitrate Converter

Convert MP3 bitrate to 128, 192, 256 or 320 kbps online. Compare file sizes, preview the result and download privately in your browser.

Open the tool →02 / FADE OUT

Fade Out Audio

Set how many seconds should fade at the end. Listen to the result, then save it as MP3 or WAV.

Open the tool →03 / COMPRESS

Compress MP3

Make an MP3 smaller by choosing a lower bitrate. Compare the original and actual output sizes, listen, then download. Your file stays on your device.

Open the tool →04 / CONVERT

WAV to MP3 Converter

Convert a PCM WAV recording to MP3 in your browser. Choose a bitrate, check the size difference and preview your file before saving.

Open the tool →05 / CONVERT

MP3 to WAV Converter

Convert MP3 to uncompressed 16-bit PCM WAV on your device. Compare the larger file size, preview the result and download without uploading audio.

Open the tool →06 / FADE IN

Fade In Audio

Give music a gentle beginning. Set a fade-in duration, preview the opening and download MP3 or WAV, processed privately in your browser.

Open the tool →08 / CONVERT

M4A to MP3 Converter

Convert audio-only AAC or ALAC M4A files to MP3 on your device. Choose a bitrate, compare file sizes, listen and download.

Open the tool →09 / TRIM

Trim Audio

Set start and end times, preview your selected audio and download a trimmed MP3 or WAV. Private browser processing with no uploads.

Open the tool →10 / VOLUME

Change Audio Volume

Increase or decrease audio volume with a gain in decibels. Compare the original and processed file, then download MP3 or WAV without uploading audio.

Open the tool →11 / CHANNELS

Stereo to Mono

Mix left and right channels into one mono track on your device. Compare the original and result, then download MP3 or WAV.

Open the tool →12 / JOIN

Merge Audio

Join MP3 and WAV files in your chosen order. Preview each recording, merge them into one track and download privately in your browser.

Open the tool →13 / SPEED

Change Audio Speed

Slow down or speed up MP3 and WAV audio while keeping the original pitch. Compare playback and download a new file, processed on your device.

Open the tool →14 / PITCH

Change Audio Pitch

Raise or lower MP3 and WAV audio by semitones while keeping its pace. Compare the original and result, then download a new file on your device.

Open the tool →

Planning for a size limit? Try the Audio file size calculator →

Conversion walkthroughs

Follow the M4A to MP3 recording guide, WAV to MP3 size and bitrate guide or MP3 to WAV quality and size guide before choosing an export.

Choose the right output

For a smaller file, start with MP3 compression. For a specific delivery format, choose a converter: MP3 to WAV usually increases size, while WAV to MP3 uses lossy compression. To soften an ending without shortening the track, choose fade out. For a gentle opening, choose fade in.

Tools accept the formats listed on their pages, up to 30 MiB and ten minutes. Browser memory may impose a lower practical limit. Read the audio guides for quality and file-size choices, or visit help if processing fails.