AI Token Calculator
Estimate AI input tokens from text length and combine them with expected output tokens for API cost planning.
What does this calculator answer?
AI tokens are the units language models process. This calculator estimates input tokens from text and combines them with expected output tokens so you can plan API usage before sending requests.
Inputs
Results
Estimated input tokens
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Estimated total tokens
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Word count
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Formula
Rough English estimate: about 4 characters per token. Actual tokenization varies by model and language.
Example
If each support ticket uses about 500 input tokens and 150 output tokens, processing 10,000 tickets requires roughly 6.5 million total tokens.
Common mistakes
- Treating characters, words, and tokens as the same unit
- Forgetting output tokens
- Assuming every provider uses the same tokenizer
Sources and pricing
Prices and policies can change. Confirm official sources before budgeting.
Important note
This is an estimate. For exact counts, use the provider tokenizer or API usage response.