Free tools · No signup
Free video tools
Practical tools for people who work with video every day. No signup. Your files never leave your browser.
Subtitles, transcripts and timing
Practical tools and explainers for the maths and formats behind subtitles, transcripts and timecode: converting between formats, timing captions, estimating speaking time and getting the frame counting right.
Free · In your browser
Timecode calculator
Add and subtract SMPTE timecode, or convert it to frames and real seconds, at any common frame rate, drop-frame included.
Open the tool →Free · In your browser
Speaking time calculator
Paste a script to see how long it takes to say out loud, or work out how many words fit a 15, 30, 60 or 90 second video at your own speaking pace.
Open the tool →Free · In your browser
Video file size calculator
Work out how big a video file will be from its bitrate and duration, or the bitrate you need to hit a platform's upload size limit.
Open the tool →Free · In your browser
SRT to VTT converter
Convert SRT subtitles to WebVTT, or WebVTT back to SRT, entirely in your browser. Handles speaker tags, notes, styling and hour-less timings.
Open the tool →Free · In your browser
YouTube chapters generator
Type a time and a title for each section of your video, and this checks the list against YouTube's own chapter rules before you paste it into the description.
Open the tool →Social video formats
Practical tools and explainers for shaping video around a platform's frame: working out an aspect ratio, resizing to a target ratio, checking a platform's current dimensions, and getting a YouTube thumbnail through upload checks.
Free · In your browser
Aspect ratio calculator
Enter any width and height to see the reduced aspect ratio and its decimal value, then resize to a target ratio and get the other side, raw and rounded to an even pixel count.
Open the tool →Free · In your browser
Social media video sizes
Video dimensions and aspect ratios for Instagram, Facebook, YouTube, TikTok and LinkedIn, each one checked against the platform's own official spec page and linked so you can verify it yourself.
Open the tool →Free · In your browser
YouTube thumbnail size checker
Drop in a thumbnail to check it against YouTube's own published upload requirements: format, minimum width, file size and aspect ratio, entirely in your browser before you upload anything.
Open the tool →Free · In your browser
YouTube thumbnail downloader
Paste a video or Shorts link to preview its thumbnail in every size YouTube generates, then download the one you need. We never see the link you paste; only the video ID reaches YouTube's own image server, to fetch the thumbnails themselves.
Open the tool →Other tools we rate
Not ours, and we are not paid to list them. These are free tools video teams rely on.
- HandBrake ↗
Open-source desktop video transcoder with presets for most devices.
External site
- Audacity ↗
Free audio editor for cleaning up voice recordings.
External site
- VLC ↗
Plays almost any video file and can convert between formats.
External site
- OBS Studio ↗
Free recording and live streaming software.
External site
- Subtitle Edit ↗
Desktop subtitle editor with waveform timing (Windows).
External site
- FFmpeg ↗
The command-line toolkit most video software is built on.
External site
Questions about these free tools
- Are these video tools really free?
- Yes. Every tool on this page is free to use without an account, and there is no usage limit.
- Do my files get uploaded anywhere?
- No. These tools run in your browser, so the files and text you give them stay on your device. The YouTube thumbnail tool is the one exception to note: it loads thumbnail images directly from YouTube.
- Do I need an Anjin Media account?
- No. You only need an account if you want Anjin Media to compose finished edits from your own footage.
- Can I put a calculator on my own website?
- Yes. Calculators with an embed option show a short code snippet at the bottom of their page. Paste it into your site and the tool appears with a link back to us.