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Free tools / Agent-friendly tools
AI Prompt Token Estimator
Get a rough token estimate, character count and approximate context usage for a prompt or other text.
How it works
A simple tool for a specific job.
Use the result as a starting point; review important decisions independently.
01 / STEP
Paste the prompt
Include text you expect to send to a model.
02 / STEP
Set context limit
Enter the model’s advertised context length.
03 / STEP
Use as guidance
Estimate size before requesting actual token counts.
Frequently asked questions
Good to know.
Are these exact OpenAI token counts?
No. Exact counts require the correct model tokenizer.
Why does code sometimes count differently?
Tokens depend on vocabulary and character patterns, not just word count.
Keep exploring