Converts WMA files to AAC format — Windows-based media libraries, legacy devices, and corporate audio systems to modern streaming services, YouTube, and devices where AAC is the native codec. All conversion happens locally in your browser with no file size limits.
Runs on FFmpeg
Content reviewed October 2026 · About Toolzum
Convert AIFF to WMA for legacy Windows systems that accept nothing else. Serve corporate libraries stuck on old codecs — local FFmpeg work, unlimited saves.
Convert AAC to universally compatible MP3 for legacy players and sharing. Reach every device ever made — local FFmpeg work, unlimited saves.
Convert WMA to FLAC for lossless Windows-library archival. Escape legacy codecs without further loss — local FFmpeg work, unlimited saves.
Convert Windows ICO icons to ultra-efficient AVIF for modern web use. Shrink favicon libraries for the fast web — local Canvas work, unlimited saves.
Convert MKV to legacy AVI for old players and embedded systems. Reach hardware that accepts nothing newer — local FFmpeg work, unlimited saves.
WMA (Windows Media Audio) uses lossy compressed encoding and is best for Windows-based media libraries, legacy devices, and corporate audio systems. AAC (Advanced Audio Coding) uses lossy compressed encoding and excels at modern streaming services, YouTube, and devices where AAC is the native codec. Converting between them lets you take advantage of each format's strengths — for example, using a compressed format for sharing and a lossless format for editing. All conversion happens locally in your browser with no file size limits.
Better quality per bit — 128k AAC matches 192k MP3 roughly. Modern phones and apps prefer AAC; legacy-only players still need MP3.
128 kbps AAC for typical rips; the source already lost quality once, so generous rates hide a second generation. Voice-only survives lower.
PlaysForSure-era DRM files cannot convert — only unprotected rips you own. Subscription downloads stay locked.
No — conversion runs locally in your browser with FFmpeg. Saves never touch a meter — downloads on local tools are unlimited.
Text to Speech (TTS)
Generate natural-sounding speech from text using your browser's built-in voices. Adjust speed and pitch — download your text as .txt.
Audio Cutter
Trim and cut audio files online — MP3, WAV, M4A, FLAC, and OGG. Set start and end times with sliders, then download the trimmed MP3 clip.
MP3 to WAV
Converts MP3 files to WAV format — universal music playback and sharing across all devices and platforms to professional audio editing, mastering, and archival in DAWs and production software. All conversion happens locally in your browser; files up to 100 MB each.
Speech to Text
Dictate live microphone speech to text in multiple languages through your browser's speech service. Live captions for meetings and notes — free to start, no Toolzum account needed.
MP3 Compressor
Shrink MP3 files by lowering bitrate with quality presets — fit podcasts into feed limits. Cut a 50 MB episode to 15 MB cleanly — local FFmpeg work, unlimited saves.
Apple Music Preview Extractor
Extracts publicly available 30-second audio preview clips from Apple Music by resolving the store URL. Free to start with no signup.