Jay's Token Gauge

Local-only token, image, energy, water and runner-equivalent estimates for ChatGPT.

Jay's token gauge is an independent utility and is not affiliated with or endorsed by OpenAI or ChatGPT. All displayed values are estimates for educational and personal analytics use: - token estimates, - energy estimates, - runner-equivalent estimates, - water-equivalent estimates. These values are not accounting, billing, legal, or compliance records. This extension runs on your device and estimates token usage and related metrics from visible content on chatgpt.com, using fixed local formulas rather than autonomous AI features. It was developed with AI-assisted coding tools, but the extension itself is not an AI system under the EU AI Act. It follows GDPR principles such as data minimisation and privacy by design: full chat text is not intentionally stored, and data such as settings and numeric aggregates are saved only in your local browser storage unless you choose to clear or sync them. We do not operate a backend for this extension and do not sell or intentionally transmit your data.