maratoolRAG Chunk Calculator — Estimate Chunk Count
Enter total tokens, chunk size, and overlap to see estimated chunk count and step size for RAG pipelines.
—Chunk count
—Step size
How to use
- Enter total document tokens (from your tokenizer).
- Set chunk size and overlap in tokens.
- See estimated chunk count and step size instantly.
Frequently asked questions
How is chunk count calculated?
For documents longer than one chunk: ceil((total − overlap) / (chunk size − overlap)).
What overlap should I use?
Common choices: 10–20% of chunk size to preserve context across chunk boundaries.
Can overlap equal chunk size?
No. Overlap must be less than chunk size or the step size would be zero.
Is my data sent to a server?
No. All calculations happen in your browser.
Last updated
Powered by maratool