10 pages at 750 tokens/page
- Total tokens ≈ 7,500
tech calculator
PDF Token Estimator
Estimate tokens from PDF page count to budget LLM/API processing costs.
Results
- Estimated tokens
- 7,500
How to use this calculator
- Enter the PDF page count.
- Set tokens per page (default 750; adjust for more/less dense docs).
- Review estimated total tokens to plug into cost calculators.
Inputs explained
- Tokens per page
- A heuristic for your document type. Dense legal/tech may be higher; slides lower.
How it works
Total tokens = Pages × Tokens per page. Set tokens/page based on typical density (e.g., 500–1,000).
Formula
Total tokens = Pages × Tokens per page
When to use it
- Budgeting API costs for batch PDF processing.
- Estimating token usage before running a tokenizer.
- Planning ingestion pipelines for document sets of known page counts.
Tips & cautions
- Use a higher tokens/page value for dense text; lower for slides/diagrams.
- For mixed documents, run separate estimates or use an average tokens/page.
- Combine with your per-1k token rates to estimate processing cost.
- Heuristic only; actual tokens depend on content and tokenizer.
- Does not account for images/diagrams unless you adjust tokens/page accordingly.
- For exact counts, run a tokenizer on sample pages.
Worked examples
50 pages at 600 tokens/page
- Total tokens ≈ 30,000
Deep dive
Estimate PDF tokens by entering page count and a tokens-per-page heuristic to budget LLM/API costs.
Adjust tokens/page based on document density for better estimates.
FAQs
- How do I pick tokens per page?
- Start with 500–1,000. Increase for dense legal/technical text; decrease for slides/short pages.
- Is this exact?
- No. It’s a heuristic. Use a tokenizer on sample pages for precise counts.
- Can I estimate multiple PDFs?
- Sum the page counts or run per-document estimates and add them.
- Does image OCR add tokens?
- If OCR produces text, it counts toward tokens. Adjust tokens/page upward if OCR text is significant.
- Can I plug this into cost estimators?
- Yes—combine total tokens with your per-1k token rates to estimate cost.
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Heuristic estimate. For billing-critical scenarios, run actual tokenizers on the documents.