AI Token Counter
Paste a prompt to estimate its token count and check whether it fits a model's context window. Runs entirely in your browser — no text is sent anywhere.
0 characters · 0 words
Why token estimates matter
AI models read text in tokens, not characters — roughly four characters or three-quarters of a word per token in English. Knowing your token count helps you stay inside a model's context window and anticipate cost. For exact, model-specific counts you'd use that model's tokenizer; this tool gives a fast, private estimate for planning.