Free calculators and utilities for professionals who work with audio. No signup required.
Enter your audio or video duration and we tell you the best pack, total cost and the savings versus human transcription.
Open toolPaste or upload a subtitle file and convert between the three most common formats. Everything runs in your browser: your file never leaves your device.
Open toolConvert between time formats: HH:MM:SS.ms, total seconds, milliseconds and frames at 24, 25, 30 or 60 fps. Useful for video, subtitles and editing.
Open toolPaste any text and instantly get words, characters, sentences and paragraphs, plus estimated silent-reading time and speaking time at three paces (slow, normal, fast). Useful for podcast scripts, talks, videos and posts.
Open toolIf you transcribe audio or work with subtitles, you usually end up doing three things over and over: estimating how much it will cost to transcribe a file, converting subtitles between SRT, VTT and TXT, and translating timestamps between HH:MM:SS, seconds and frames. The three are fast operations, but opening a spreadsheet or installing software every time is overkill. That is why these three tools are free, signup-free and run entirely in your browser.
These tools run 100% in your browser with JavaScript. We do not upload your files anywhere, we do not store logs and you do not need an account. The only reason they exist is so that the people already searching for transcription solutions find VOCAP when the time comes to turn audio into text with AI. Meanwhile, the tools are useful as they are and we ask for nothing in return.
No. All three tools are fully open and run in your browser. You only need to sign up to use AI automatic transcription, which is a separate service.
No. The calculator only takes a duration (not a file). The SRT/VTT/TXT converter processes text in your browser. The timestamp converter sends nothing either. Zero logs, zero uploads.
Yes. They are mobile-first. If one fails in your browser for some reason, try the latest Chrome or Safari.
No. You can use them as many times as you want. Since everything runs in your browser, there is no quota or rate limit.
That is automatic transcription, not conversion. VOCAP transcribes audio and video to SRT/VTT with word-level timestamps. 30 minutes free on signup to try it.
Of course. They are stable public URLs. If you find them useful, share them with your team or link to them from anywhere you like.