Chars, words, lines
Instant totals for cues, characters, words, and line counts.
Free QA tool
Caption character counter for readable subtitle lines
Paste SRT, VTT, or plain caption text to see character counts, line lengths, and cue totals. Timed files also show CPS so you catch lines viewers cannot finish reading.
Flags lines over 42 characters. CPS appears when timestamps exist.
Paste captions to see counts
42-character guide
Flag lines longer than the common broadcast-style line length.
Optional CPS
When timestamps exist, see average and max characters per second.
Definition
What is a caption character counter?
A caption character counter measures how much text sits on each subtitle line. Creators use it to catch lines that wrap badly on phones or fly past too fast when timing is tight.
- · Counts characters, words, lines, and cues
- · Highlights lines over 42 characters
- · Reports CPS when cues include timing
When you need it
When accurate text still fails on mute
A correct transcript can still overflow the safe title area or flash too quickly. Check length and reading speed before you upload — especially for vertical feeds.
How it works
Audit caption length in three steps
Paste once, scan the flags, then fix lines in your editor or regenerate in Studio.
01
Paste or upload captions
Drop SRT/VTT or paste plain caption text into the tool.
02
Review totals and flags
Check summary stats and scroll any lines over the 42-character guide.
03
Fix or regenerate
Shorten lines in your file — or open AutoCaptions to restyle readable captions.
Who this counter is for
Use it whenever readability matters as much as accuracy.
caption character counter FAQ
Why flag 42 characters per line? +
Many broadcast and streaming style guides treat ~42 characters as a practical maximum per line so text stays readable and does not wrap unpredictably on small screens.
What is CPS? +
Characters per second — how fast a viewer must read before the cue disappears. Timed files show average and max CPS so you can catch cues that flash too quickly.
Do you upload my captions? +
No. Counting runs locally in your browser.
Which formats work? +
SRT, VTT, and plain text. Timed formats unlock CPS; plain text still reports characters, words, and line lengths.
How do I fix long lines in AutoCaptions? +
Generate captions in the AI subtitle generator, then edit wording and timing in Studio before you export.
Want captions that already read well on mute?
Audit soft files here — then generate styled, editable captions and export a burned-in MP4.
Burn captions into your video