Token Splitter

Paste long text, set a maximum chunk size in tokens and an overlap, and copy or download the chunks.

Runs in your browser — nothing is uploaded
Download

Chunks

    How to use Token Splitter

    1. Paste your text.
    2. Set the maximum tokens per chunk and the overlap.
    3. Copy individual chunks or download them all as JSON or text.

    Formula & assumptions

    • Counts are estimates: the tokenizer approximation was calibrated against OpenAI’s o200k_base (typically within a few percent for English prose and code; up to about 20% off for some other languages). Nothing you paste leaves your browser.
    • Chunks break at paragraph, sentence or word boundaries, never in the middle of a word.