Token Counter & Cost Estimator
Estimate token counts, word length, and API costs for OpenAI, Anthropic, and DeepSeek models instantly.
Estimated Tokens42
Characters158
Words24
Est. API Cost$0.000105
Why Token Counting Matters
Large language models don't process raw characters or words — they process tokens. Understanding token length helps students and developers:
- Avoid Context Overflows: Prevent prompts from exceeding model limits (e.g. 128k context windows).
- Control API Expenses: Calculate cost per API call before running large batch scripts.
- Clean Up Prompts: Strip redundant spaces and formatting clutter to save tokens.
Frequently Asked Questions
How accurate is this token counter?
It uses model-specific character-to-token ratio heuristics (approx. 1 token per 3.8-4 characters in English text), providing quick estimates within ~95% accuracy.
Is my pasted text private?
Yes, 100%. The calculation runs completely in JavaScript inside your browser. No text is transmitted to external servers.