What token ratio is used?
The default estimate is roughly four characters per token, which is adjustable in future modules.
Check how much room your prompt, documents, and expected answer need inside a model context window.
Tool workspace
Live preview/result
Estimated input tokens: 15 Reserved output tokens: 4,000 Total context needed: 4,015 Fits. Remaining room: 123,985 tokens
How it works
Paste or enter your source material.
Adjust the fields for the model or workflow.
Review the live result and copy it when ready.
Use cases
FAQ
The default estimate is roughly four characters per token, which is adjustable in future modules.
Models need room for both your input and the answer. Large outputs reduce available input space.
Related tools
Analysis
Estimate tokens, words, characters, and reading size before sending a prompt to an AI model.
Finance
Estimate API cost from input tokens, output tokens, request volume, and model pricing.
Writing
Convert rough notes into a clean prompt structure with role, task, context, constraints, and output format.
Use the free browser tools, then save your best ideas into the AiverseWorld prompt library workflow.