Excel / CSV Converter
Convert between Excel, CSV, JSON, and TSV instantly in your browser. No uploads, no account required.
How it works:: Upload your file → choose output format → adjust options → preview → download.
Privacy first:: Everything runs 100% in your browser using Web Workers. Your files are never uploaded.
Benchmark Performance
Real-world tested, production-ready
100K rows/sec
1M+ rows
CSV/JSON/TSV
View full benchmark →