Token Counter

Estimate token count for GPT-4o, Claude, and Gemini. See how much of the context window your text uses.

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Token count is an estimate based on common tokenization rules.

Characters

Words

Tokens

Context Window Usage by Model

GPT-4o(128K token window)

<0.1%

0 / 128,000 Tokens

Claude Sonnet(200K token window)

<0.1%

0 / 200,000 Tokens

Gemini 1.5 Pro(1.0M token window)

<0.1%

0 / 1,000,000 Tokens

How Tokens Work

Tokens are chunks of text that AI models process. In English, 1 token is roughly 4 characters or 0.75 words.

CJK characters (Chinese, Japanese, Korean) are typically 1–1.5 characters per token due to their complexity.

Note: This is an approximation. Actual token counts may vary slightly by model and version.

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