SMI to LRC Subtitle Converter
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100% local processing in your browser. No upload. No waiting.
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Supports .smi, .sami, .html files up to 50 MB
More Subtitle Tools
How It Works
Upload SMI File
Drag & drop or select your .smi file
Convert Instantly
We process it locally in your browser
Download LRC
Get your .lrc file immediately
Why Choose AllSubConverter?
Your Privacy Matters
Everything runs in your browser. Your files are never uploaded.
Lightning Fast
Optimized processing engine converts files in seconds.
Free & Local
Each file can be up to 50 MB. Batches can contain up to 200 files or 1 GB total.
Works Everywhere
Works on Windows, Mac, Linux, iOS, Android - any modern browser.
Free Online SMI to LRC Converter
Our SMI to LRC converter reads Synchronized Accessible Media Interchange input and produces Lyrics output entirely in your browser. Source SMI timing (whole milliseconds (Start=...)) is converted to LRC timing ([mm:ss.xx] minute-second-centisecond). SMI styling and markup that the target format cannot represent are stripped, leaving valid, ready-to-use output. The conversion runs client-side, so your subtitle files are never uploaded to a server.
Input Format
SMISMI (SAMI, Synchronized Accessible Media Interchange) is a Microsoft subtitle format built from HTML-like <SYNC> elements whose Start attribute is given in milliseconds. SMI supports multiple language tracks through CSS classes and was widely used for Windows Media Player captions and accessibility content.
Output Format
LRCLRC (Lyrics) is a timestamped lyrics format for music players and karaoke apps. Each lyric line is prefixed with a [mm:ss.xx] timestamp. LRC has no end times (a line ends when the next begins) and no styling, making it ideal for synced song lyrics rather than film subtitles.
Features
Why Convert?
Format Differences
Common Use Cases
Synced Lyrics
Turn timed subtitles into LRC lyric files for music players that display synced song lyrics.
Karaoke
Produce LRC files for karaoke applications that read line-synced lyrics.
Music Apps
Generate LRC for MiniLyrics, Poweramp, and other lyric-capable music players.
Related Formats
SRT (SubRip)
The universal plain-text alternative: convert to SRT for maximum device compatibility.
VTT (WebVTT)
The web alternative: convert to VTT if your target is HTML5 video or YouTube.
TXT (Plain Text)
The transcript alternative: convert to TXT for a clean plain-text transcript.
Frequently Asked Questions
It reads a Synchronized Accessible Media Interchange file, parses each cue's timing and text, strips SMI markup, and writes a valid .lrc file. Source SMI timing (whole milliseconds (Start=...)) is converted to LRC timing ([mm:ss.xx] minute-second-centisecond).
Absolutely. Every conversion runs client-side in your browser. No subtitle data, file contents, or metadata is ever transmitted to a server.
SMI styling and markup are removed. Cue start times are truncated to centisecond precision and end times are not represented. Multi-line cue text remains multi-line, with only the first line receiving the timestamp.
Yes, completely free with no sign-up, no watermarks, and files up to 50 MB each. All processing happens in your browser, so your files are never uploaded to a server.
Source SMI timing (whole milliseconds (Start=...)) is converted to LRC timing ([mm:ss.xx] minute-second-centisecond).
Yes. The converter is fully responsive and works in any modern mobile browser on iOS and Android.