Any file up to 500 MB. Drop several files and they come back as one ZIP. Many image, audio and video conversions run in your browser; anything else is uploaded and removed within the hour.
Convert your high-resolution FLAC audio files to the widely compatible MP3 format effortlessly. This tool is perfect for users who need to save storage space on portable devices or ensure playback on older car audio systems.
FLAC (Free Lossless Audio Codec) stores audio without losing any data, resulting in large file sizes. MP3 is a lossy compressed format that discards non-audible frequency data to drastically reduce file size. During conversion, our tool decodes the FLAC stream and re-encodes it into the MP3 format while allowing you to choose your preferred bitrate.
Because FLAC is lossless and MP3 is lossy, you will lose some audio data during this conversion; however, using 320 kbps bitrate makes the difference virtually indistinguishable to the human ear.
We built this project so anyone can convert files without paywalls, accounts, or hidden limits. Here is what that promise means in practice.
Every converter on ConvertX is free to use: no trials, no premium tiers, and no credit packs. We will never put core conversion features behind a subscription. Whether you convert one photo or a hundred files a week, the price stays zero.
Many image, audio, and video conversions run entirely in your browser. Your files never leave your device for those jobs. When server processing is required for documents or specialized formats, uploads are handled securely and removed automatically — typically within one hour.
A quick guide to strengths and trade-offs of popular formats — so you pick the right one before converting.
Music, podcasts, voice recordings, and sound effects.
Common extensions: MP3, WAV, FLAC, OGG, AAC, M4A, OPUS
Raster and vector graphics for web, print, and photography.
Common extensions: PNG, JPG, WebP, AVIF, GIF, SVG, HEIC, TIFF
Office files, PDFs, ebooks, and plain text.
Common extensions: PDF, DOCX, XLSX, PPTX, ODT, EPUB, TXT
Clips, streams, screen recordings, and movies.
Common extensions: MP4, WebM, MOV, MKV, AVI, MPEG
