Estimate transcript size from audio duration before you start editing or publishing.
Use this free browser estimator to predict transcript length from audio or video runtime, or reverse-estimate speaking time from finished transcript text.
Duration
42:00
Pace
150 WPM
Words
6,300
Subtitle cues
900
Useful for people who turn recordings, captions, and transcripts into publishable work.
Plan transcript volume faster
Estimate words, pages, and subtitle cue counts before the recording enters production.
Use real media duration when you have it
Upload local audio or video files and let the browser read the runtime for a closer estimate.
Adjust for speaker pace
Switch between slower and faster words-per-minute assumptions depending on the source material.
Use the audio duration and transcript length estimator
Estimate forward from audio runtime or backward from transcript text. It is useful for scoping editing work, content production, subtitle volume, and publication planning.
Audio duration input
Enter a duration manually or upload an audio or video file to grab the runtime locally.
Estimated words
2,250
Estimated characters
13,950
Subtitle cues
321
Page count
4.5 / 9
Single-spaced / double-spaced pages.
Duration
00:15:00
Pace
150 WPM
Adjust the speaking pace to fit interviews, lectures, podcasts, or meetings.
Good planning starts before the transcription is finished
If you know roughly how many words, pages, or subtitle cues a recording will produce, it becomes much easier to budget editing time, content repurposing, and publishing effort.
How it works
Each tool is designed to feel lightweight while still being practical enough for real transcript and subtitle work.
Choose audio or transcript mode
Go from media duration to transcript size, or from transcript size back to speaking time.
Set duration or text
Upload a media file, type the runtime manually, or paste the transcript you want to estimate from.
Use the estimate for planning
Scope editing, subtitles, publishing, and internal review work with a more realistic sense of volume.
Useful next steps after estimating
Once you know the size of the transcript job, the next step is usually generating the transcript or cleaning the export.
Transcript Cleaner
Clean the transcript once it exists and remove the structural noise that slows review down.
Subtitle Converter
Turn the finished transcript into subtitle formats or pull subtitles back into plain text.
WhisperUI Speech to Text
Transcribe the original recording when you are ready to move from estimate to actual output.
Ready to move from estimate to actual transcript?
Use WhisperUI to upload audio, generate the transcript, export TXT or SRT files, and keep the rest of the workflow connected.
Frequently asked questions
Answers about how transcript estimation works, what upload support is included, and how precise the numbers are meant to be.