Prompt Token Estimator
Estimate prompt tokens, characters, words, and lines before sending text to an LLM.
About This Tool
Estimate how much context a prompt may consume before sending it to a language model.
The estimate is intentionally conservative for planning. Use the target model tokenizer for exact billing or hard limits.
Estimated tokens
28
Characters
128
Words
21
Lines
1
Token counts are a planning estimate. Use the target model tokenizer for final billing or hard limits.
How to Use
- 1
Enter the values you need or paste your text into the input area.
- 2
Adjust any options, units, or settings for your exact use case.
- 3
Review the result and copy it into your document, workflow, or next task.
Features
Instant Results
Outputs update directly in the browser as you enter values.
Browser-Based Processing
Your inputs are handled locally and are not uploaded for calculation.
Simple Inputs
Clear fields and readable outputs keep repeat tasks fast.
Free to Use
Use the tool immediately with no sign-up or installation.
Common use cases
- ›Check whether a prompt is likely to fit in a model context window.
- ›Estimate token growth while editing system prompts and instructions.
- ›Prepare rough token budgets before moving prompts into production.
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