Split large CSV files by row count, file size, number of files, or column value. Extract random samples by percentage or count. Every output file keeps the header row. No uploads required.
Split by rows, file count, file size, or column value. Or sample a random percentage. All client-side.
Your CSV is processed entirely in your browser. We never see your data. No account required.
Click to browse or drag and drop
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Need to clean or transform this CSV first?
Trim whitespace, reformat fields, build new columns, and more.
Upload once, choose a split mode, configure, and download. Everything runs in your browser with no file ever leaving your device.
Click the upload zone or drag and drop your CSV file. Processed entirely in your browser using PapaParse. Nothing sent to a server.
Export all records, sample rows by percentage or count, split by row count, number of files, file size, or column value.
Set your row limit, file count, size cap, or column. A live preview shows exactly how many output files will be produced.
Click Split. All output files are packaged into a single ZIP. Every file is UTF-8 encoded with a BOM and includes the header row.
Platform import limits, team workflows, and research needs all create situations where one large file needs to become several smaller ones.
Qualtrics Supplemental Data Sources have a hard 100,000-row cap. Split your contact file by row count before import to stay within the limit.
Extract a random sample by percentage or exact count for a pilot study, A/B test, or quota check. The Fisher-Yates shuffle ensures a genuinely random cross-section.
Many email platforms cap imports at 10,000 to 50,000 contacts. Split by row count to create batches that fit within your platform's upload limit.
Divide a respondent file equally across researchers or call centre agents. Split by number of files to produce equal-sized workloads in one step.
Split a contact list or survey export by Region, Status, or any column to produce one file per segment, each named after the column value.
CRM platforms often impose file size limits on bulk imports. Split by file size in KB to produce parts that import cleanly without hitting server-side limits.
Common questions about splitting CSV files online.
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