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CSV Splitter

Split CSV data into equal parts with headers in every chunk. Break large pastes into smaller pieces — local splitting, free, no signup.

100% Local Browser Native

How to Use the CSV Splitter

1. Upload the CSV

Large files to divide.

2. Set split rule

Number of equal parts.

3. Download chunks

Headers in every part.

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Frequently Asked Questions

Split by rows or values?

Neither — the CSV is divided into N equal parts by row order. Headers repeat in every chunk.

How small per chunk?

Rows divide evenly across the parts you pick (2, 3, 4). Check the per-part row counts in the output before importing.

Encoding preserved?

Yes — BOM and UTF-8 carry into every chunk. Mixed-encoding sources normalize first.

Does splitting upload data?

No — splitting runs locally in your browser. Data never leaves your device.

What if rows do not divide evenly — 4 rows into 3 parts?

Chunk size rounds up (ceil 4/3 = 2), giving parts of 2, 2, and 0 rows — the last part ships headers only. Check the per-part row counts in the Part N banners before importing.

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Last updated October 2026