Home / ChatGPT context meter: see how full your chat is
ChatGPT context meter: see how full your chat is
A ChatGPT context meter shows how much of the chat's context window you have used, so you can tell when a long conversation is about to get worse. ContextMeter is a free Chrome extension that does exactly that.
What is a ChatGPT context meter?
It is a small gauge on the ChatGPT page that shows the percent of the context window your current chat is using. The window is the amount of text the model can consider at once.
How to use it
- Install ContextMeter from the Chrome Web Store.
- Open any ChatGPT chat. A percent badge appears in the corner.
- Click it to see tokens used, room left, and the largest messages.
- At red, use Handoff to carry the chat into a new one with a summary.
ContextMeter is a free Chrome extension (Edge and Firefox to follow) in US English, priced at $0. It runs only in your browser, and your chat text never leaves your computer. Add it to Chrome.
Why people use a context meter
A long ChatGPT or Claude chat gets worse before it hits a hard limit: it forgets early instructions, repeats mistakes and drifts off the task. A meter shows how full the chat is, so you can switch to a new chat at about 50 to 70 percent with a summary, rather than guessing.
Frequently asked questions
Is there a free ChatGPT context meter?
Yes. ContextMeter is a free Chrome extension that shows a live percent-used meter on ChatGPT. It has no paid tier and no account.
Does a ChatGPT context meter work in the US?
Yes. ContextMeter is built in US English and priced in US dollars at $0. It works for anyone in the United States who uses ChatGPT in Chrome.
Does ChatGPT show a context meter itself?
No. ChatGPT does not show how full a chat is. You need a token counter or a context meter extension to see it.
Is my ChatGPT chat sent to a server?
No. ContextMeter reads the messages already on your screen in your browser. It has no servers and stores no message text.
What percent should I switch chats at?
Many people switch at about 50 percent to wrap up and 70 percent to hand off. Quality usually slips before the limit.
Last reviewed 2026-10-08. Numbers change often; see the sources linked on this page.
ContextMeter is a free, private browser extension that shows how full your ChatGPT or Claude chat is while you use it, and helps you carry the chat into a fresh one. See how it works.