Big DataBrowser-onlyNo signup
Split a Large CSV File
Break a large CSV into smaller chunks so it is easier to open, share, validate, or convert.
Problem
A CSV is too large for a spreadsheet app, email attachment, or one-shot import workflow.
What to do
Splitting a large file keeps each chunk manageable. Use stable row counts or chunk sizes so downstream tools can process the data predictably.
- 1Upload or paste the CSV.
- 2Choose rows per chunk or target chunk size.
- 3Download the split files and process them one by one.
Use the browser tool
CSV Splitter is a free, browser-based tool that helps you get the job done quickly. Split a large CSV into N files by row count, by value, or by hash. It's built for speed and privacy: Everything runs locally in your browser — your data is never uploaded to a server. No sign-up, no installs, and no daily limits.
People also ask
- How do I use CSV Splitter?
- Paste or drop your data into the workspace, adjust the options to fit your data, then copy or download the result. Split a large CSV into N files by row count, by value, or by hash.
- Is my data uploaded or stored anywhere?
- No. Everything runs locally in your browser — your data is never uploaded to a server. Nothing is sent to a server, so it's safe to use with private or sensitive data.
- Is CSV Splitter free?
- Yes — it's completely free with no account, no sign-up, no watermark, and no daily usage limits.