Excel File Splitter
Split large Excel workbooks by sheet, row count, column value, or file size. Export to XLSX, CSV, TSV, JSON, or JSONL. Tested reliably with workbooks up to 1 million rows.
How it works: Upload Excel file → analyze sheets → configure split options → download files. Privacy first: All processing happens in your browser.
Benchmark Performance
Real-world tested, production-ready
50K rows/sec
1M+ rows
XLSX export
View full benchmark →