Math & Numbers
Convert cubic feet to US liquid gallons with configurable decimal precision
cubic-feet-to-gallonAI
Analyze language mix and estimate token usage across OpenAI, Codex, Claude, and DeepSeek profiles
ai-token-estimatorMedia
Convert AVI video files to MP4 format
avi-to-mp4Media
Real-time stereo phase correlation analyzer for mono compatibility checking
audio-phase-analyzerMedia
Audio spectrum analyzer with 3D isometric visualization
audio-spectrum-analyzer-3dMedia
Play audio files with real-time frequency visualization
audio-visualizer-playerMedia
Convert multiple audio files between different formats like MP3, WAV, FLAC, AAC, OGG, Opus with quality settings and batch processing
audio-batch-converterMedia
Edit metadata tags (artist, album, title, genre, year, track, comment) for multiple audio files at once
audio-batch-metadata-editorMedia
Normalize multiple audio files to a target peak level with consistent volume across the batch
audio-batch-normalizeMedia
Batch rename audio files using patterns, text replacement, numbering, and case conversion. Returns renamed files as a ZIP download.
audio-batch-renameMedia
Convert AMR (Adaptive Multi-Rate) audio files to MP3 format
amr-to-mp3Math & Numbers
Convert centimeters to millimeters with configurable decimal precision
cm-to-mm