Subtitle converters · 144 routes

Every subtitle format,
one step apart.

Pick a source and a target. SRT, VTT, ASS, SBV, TTML, JSON, CSV, plain text — all browser-only, all free, no signup.

From → To
From ↓ / To →SRTVTTASSTXTSBVJSONCSVTTMLLRCSMIiTTDFXPIMSC
SRT—SRT→VTTSRT→ASSSRT→TXTSRT→SBVSRT→JSONSRT→CSVSRT→TTMLSRT→LRCSRT→SMISRT→iTTSRT→DFXPSRT→IMSC
VTTVTT→SRT—VTT→ASSVTT→TXTVTT→SBVVTT→JSONVTT→CSVVTT→TTMLVTT→LRCVTT→SMIVTT→iTTVTT→DFXPVTT→IMSC
ASSASS→SRTASS→VTT—ASS→TXTASS→SBVASS→JSONASS→CSVASS→TTMLASS→LRCASS→SMIASS→iTTASS→DFXPASS→IMSC
SBVSBV→SRTSBV→VTTSBV→ASSSBV→TXT—SBV→JSONSBV→CSVSBV→TTMLSBV→LRCSBV→SMISBV→iTTSBV→DFXPSBV→IMSC
JSONJSON→SRTJSON→VTTJSON→ASSJSON→TXTJSON→SBV—JSON→CSVJSON→TTMLJSON→LRCJSON→SMIJSON→iTTJSON→DFXPJSON→IMSC
CSVCSV→SRTCSV→VTTCSV→ASSCSV→TXTCSV→SBVCSV→JSON—CSV→TTMLCSV→LRCCSV→SMICSV→iTTCSV→DFXPCSV→IMSC
TTMLTTML→SRTTTML→VTTTTML→ASSTTML→TXTTTML→SBVTTML→JSONTTML→CSV—TTML→LRCTTML→SMITTML→iTTTTML→DFXPTTML→IMSC
LRCLRC→SRTLRC→VTTLRC→ASSLRC→TXTLRC→SBVLRC→JSONLRC→CSVLRC→TTML—LRC→SMILRC→iTTLRC→DFXPLRC→IMSC
SMISMI→SRTSMI→VTTSMI→ASSSMI→TXTSMI→SBVSMI→JSONSMI→CSVSMI→TTMLSMI→LRC—SMI→iTTSMI→DFXPSMI→IMSC
iTTiTT→SRTiTT→VTTiTT→ASSiTT→TXTiTT→SBViTT→JSONiTT→CSViTT→TTMLiTT→LRCiTT→SMI—iTT→DFXPiTT→IMSC
DFXPDFXP→SRTDFXP→VTTDFXP→ASSDFXP→TXTDFXP→SBVDFXP→JSONDFXP→CSVDFXP→TTMLDFXP→LRCDFXP→SMIDFXP→iTT—DFXP→IMSC
IMSCIMSC→SRTIMSC→VTTIMSC→ASSIMSC→TXTIMSC→SBVIMSC→JSONIMSC→CSVIMSC→TTMLIMSC→LRCIMSC→SMIIMSC→iTTIMSC→DFXP—
All conversions run in your browser. Files never upload anywhere.

Subtitle formats compared

Eight formats covering every workflow from web embedding to broadcast delivery. Pick the right target for the job.

FormatTypical useStylingTimestampsSpec
SRT
SubRip Subtitle
Universal — every video editor and platform reads itNoHH:MM:SS,mmmDe facto standard
VTT
WebVTT
HTML5 <track> on the webLimited (cue tags + CSS ::cue)HH:MM:SS.mmmW3C standard
ASS
Advanced SubStation Alpha
Aegisub, fansubs, kinetic typographyFull (per-cue override codes)H:MM:SS.cc (centiseconds)Aegisub / SubStation
SBV
SubViewer / YouTube
Legacy YouTube uploadsNoH:MM:SS.mmm,H:MM:SS.mmmYouTube ingest variant
TTML
Timed Text Markup Language
Streaming, broadcast, IMSC, DFXPFull (XML attributes)begin/end attributesW3C standard
JSON
JSON cue array
Programmatic pipelines, LLM inputn/aNumeric secondsConvention only
CSV
Comma-separated values
Translation, bulk edits in Sheetsn/aConfigurable per columnRFC 4180
TXT
Plain text transcript
Show notes, blog posts, search indexingn/aStrippedn/a
Need to generate the captions in the first place?
Drop a video into the SoCaptions editor — Whisper transcription, viral styles, MP4 export. Five minutes free.
Open editor