--- title: "Subtitle shifter — Free, No Signup | Murmur" description: "Shift SRT subtitles earlier or later by seconds or milliseconds. Preview and download corrected captions locally. Free, instant, no signup." canonical: "https://www.murmurtts.com/tools/subtitle-shifter" --- GET BACK IN SYNC / FREE TOOL # Subtitle shifter Captions arriving too early or late? Move every SRT cue by the same amount. 2 cues ready. Local processing · UTF-8 SRT only · up to 200 KB · your original file is never overwritten. ## How to use this tool 1. Paste your captions or open a UTF-8 SRT file. 2. Enter a positive offset to delay captions, or a negative offset to show them earlier. 3. Preview the updated timecodes and download the corrected SRT. A constant offset moves both the start and end of every cue, keeping each cue’s duration unchanged. Add 2 seconds if captions appear 2 seconds too early. Subtract 2 seconds if captions appear 2 seconds too late. YOUR NEXT RECORDING ## Give your script a voice. Create narration with Murmur, the local voice studio for Apple Silicon Macs. [Create audio with Murmur](https://www.murmurtts.com/#product) ## Subtitle shifter: questions answered. Which direction should I shift subtitles? Use a positive value to show captions later and a negative value to show them earlier. For example, +1.5 delays all cues by 1 second and 500 milliseconds. Can I shift by milliseconds? Yes. Enter decimal seconds: 0.250 moves captions 250 milliseconds later; −0.250 moves them 250 milliseconds earlier. What if a subtitle moves before zero? The tool stops and asks for a smaller negative shift. It never silently deletes or truncates a cue. Does this fix subtitles that drift over time? No. A constant shift fixes a consistent offset. If the gap grows throughout the video, you need a subtitle editor with time stretching or frame-rate correction. This tool accepts SRT only. ## Keep creating. [Speech time calculator](https://www.murmurtts.com/tools/speech-time-calculator)[Audiobook speed calculator](https://www.murmurtts.com/tools/audiobook-speed-calculator)[Words per minute calculator](https://www.murmurtts.com/tools/words-per-minute-calculator)[Online teleprompter](https://www.murmurtts.com/tools/online-teleprompter)[SRT to VTT converter](https://www.murmurtts.com/tools/srt-to-vtt)[Audio file size calculator](https://www.murmurtts.com/tools/audio-file-size-calculator)