You can export your ChatGPT data in which will be delivered to your email. Download the export sent to you and within it you'll find which contains all your ChatGPT conversation history and associated metadata. You can then import this file here to view the token usage of each conversation along with the total sum of all the tokens you've sent (input tokens) and ChatGPT generated (output tokens). You can also sort chats by title, input tokens, output tokens, or total tokens, and view metadata such as creation and update dates. This is using the tokenizer for the model. Remember this is an estimation and not a complete representation of your token usage. Feel free to explore and contribute to the project since it's open-source. All processing is done locally in your browser and offline.