Is the AI Token & Context Calculator free?

Yes, the AI Token & Context Calculator is completely free to use. All processing happens in your browser — no sign-up or API key required.

Does the AI Token & Context Calculator send my data to a server?

No. All tools run entirely in your browser. Nothing is sent to any server.

📊 Free Tool

AI Token & Context Calculator

Find out exactly how much of your AI's context window your text is using. Estimate costs and ensure your prompts aren't being truncated before you hit send.

Input Text

0 characters0 words

Estimated Tokens

Context Window Usage

Claude 3.5 Sonnet0 / 200,000 (0.00%)

Est. cost (input): $0.0000

GPT-4o0 / 128,000 (0.00%)

Est. cost (input): $0.0000

Gemini 1.5 Pro0 / 2,000,000 (0.00%)

Est. cost (input): $0.0000

Note: Token calculation in the browser is an estimation. Exact token counts vary slightly based on the specific tokenizer (e.g. cl100k_base vs p50k_base) used by the LLM provider.

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