Estimate prompt tokens, words, and characters before use.
Workbench
Runs in your browserPrompt Token Estimator
Output
Example input
Summarize the following customer interview in five bullets.
Example output
Estimated tokens: 15 Words: 9 Characters: 58
What this tool does
Prompt Token Estimator provides a fast character-based estimate plus exact word and character counts before model submission.
Capabilities
- Approximate token count
- Exact words and characters
- Instant local calculation
- No model API required
Known limitations
- Tokenizers vary by model and language
- The estimate is not suitable for billing reconciliation
Use cases
- Estimate prompt size before sending context to a language model.
- Check context size
- Compare prompt drafts
- Plan chunking before submission
FAQ
Is the token count exact?
No. It uses a transparent character approximation because tokenization differs across models.
Is any prompt uploaded?
No. Counting happens in your browser.
What is Prompt Token Estimator?
Estimate prompt tokens, words, and characters before use.
Does this tool upload my input?
No. The transformation runs locally in your browser.
Go further
Guides
Beginner Guide
Supporting content for ai workflow workflows.
Advanced Guide
Supporting content for ai workflow workflows.
Workflow Guide
Supporting content for ai workflow workflows.
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