Count tokens and estimate API costs for different AI models. Works instantly with estimation, or use your API key for exact counts.
Estimated (~4 chars/token)
Use your Gemini API key for exact token counts
🔒 Your API key is stored only in your browser's localStorage and is never sent to our servers.
About Token Counting
Tokens are the basic units of text that AI models process. One token is roughly 4 characters or 0.75 words in English. Our estimation works for all models. For exact counts, you can optionally use a Gemini API key.
Count tokens in your text for AI models like GPT-4, Claude, and Gemini. Estimate API costs and get accurate token counts using the Gemini API. Free online token calculator.
All processing happens directly in your browser. Your data never leaves your device — we don't upload, store, or have access to any of your content.
No server roundtrips means instant results. Once this page is loaded, the tool works even without an internet connection.