Install it in your browser right now
A free browser extension that lets you calculate the duration of selected text on any open page in a couple of clicks.
Estimate the duration of selected text on any web page
You can highlight text inside an email, a CRM, a CMS or any other browser tab and send it directly into Chronometer. The selected text is inserted automatically so you can see the estimated spoken duration right away.
This is especially handy for account managers, producers and copywriters who review scripts all day and need a fast timing check without switching tools.
Copy and paste from any source on your computer
You can also use the extension like a quick workspace: paste any text manually and get the result immediately. When you finish one script, clear the form and continue with the next one.
Adjust for speaking pace
The extension supports different delivery speeds so you can choose a slow, dynamic or balanced reading style for the script you are evaluating.
Keep in mind that the estimate is optimized for informational or announcer-style reads. If your production includes acting or complex performance beats, allow extra room in the final timing.
A practical tool for managers, copywriters and audio teams
The extension removes the need to ask an engineer or copywriter for every quick estimate. If a client asks “how long will this script run?”, you can answer almost instantly and continue the conversation with confidence.
It is a small tool, but it saves a surprising amount of time inside daily production workflows.
