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Word Counter
Count words, characters, sentences and paragraphs in your text instantly.
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AI Token Counter
Estimate token counts for GPT, Claude, Gemini, DeepSeek, and other AI models. See cost estimates and tokenization rules of thumb.
ai token countertiktokenizeropenai token calculatorllm token countertoken estimator
Characters
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Words
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Estimated Token Counts
Cost Estimate
Based on GPT-4 class tokenization
Tokenization Rules of Thumb
- 📏 1 token ≈ 4 characters in English (≈ 0.75 words)
- 🔤 1 token ≈ 1 word in simple text, less for technical/code
- 🇨🇳 Chinese: 1 character ≈ 1-2 tokens (varies by model)
- 💻 Code tokens are denser — keywords, operators count as 1 token each
- 📊 Numbers are split: "123456" → multiple tokens
How to use
How to estimate AI token counts with this tool
- 1 Paste your prompt, system message, or any text into the input area. The token estimates update in real time.
- 2 Review the estimated token counts for each model family. Different tokenizers produce slightly different counts.
- 3 Check the cost estimate section to see how much your text would cost as input tokens across popular models.
- 4 Use the rules of thumb section to build intuition about how text maps to tokens for future estimates.
- 5 Click Load Sample to see a typical AI prompt tokenized for reference.
Token counting matters because AI API pricing is based on tokens, not words or characters. A token is roughly four English characters or three-quarters of a word, but the exact mapping depends on the tokenizer each model uses. This tool estimates token counts for GPT, Claude, Gemini, DeepSeek, and open-source models so you can predict costs before sending requests.
The cost estimate section translates token counts directly into dollar amounts using current API pricing. This is especially useful when designing prompts for production systems where every token adds up across thousands of requests per day.
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