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SEO & text
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Free AI Token Counter & Tokenizer

Count AI tokens, words, and characters locally and inspect token boundaries with OpenAI-compatible encodings.

Count tokens locally

The tokenizer downloads to your browser; your text is not uploaded.

0 characters

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Tokens

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Characters

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Characters per token

About this tool

Token counts help estimate context usage and API cost before sending a prompt. Switch between modern o200k and cl100k encodings and inspect exactly how the text is split.

How to use Free AI Token Counter & Tokenizer

  1. 1Paste a prompt, document excerpt, or model response.
  2. 2Choose the encoding used by the target model.
  3. 3Count tokens and inspect the individual token pieces.

Tips for a better result

  • Allow room for the model response when checking a context limit.
  • Remember that chat wrappers can add tokens beyond the visible message.
  • Use an estimate rather than tiktoken for non-OpenAI tokenizer families.

Frequently asked questions

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