What is OpenAI Token Calculator?

The OpenAI Token Calculator helps users estimate the number of tokens a piece of text will consume when using OpenAI models. It calculates character count, word count, estimated tokens (using both character-based and word-based heuristics), and byte size. If a price per 1,000 tokens is provided, it also estimates the cost. This tool is useful for developers, writers, and AI users to manage token usage, predict costs, and optimize prompts or outputs before sending them to a model.

How to Use:

1. Paste or Enter Text: Input your prompt or AI response in the text area.
2. Optional – Enter Price per 1,000 Tokens: If you want to calculate cost, enter the token price.
3. Click “Calculate”: The tool computes character count, word count, estimated tokens (two methods), byte size, and estimated costs.
4. Review Results: Use these estimates to plan AI usage, manage budgets, and optimize text length.
5. Clear Input (Optional): Click “Clear” to reset the tool and start a new analysis.