Bidirectional converter between Excel spreadsheets (XLSX) and CSV files. Select sheets, choose delimiters, and preview data before converting. Everything runs locally in your browser — nothing is uploaded.
Paste XLSX/Excel data as tab-separated text to convert to CSV
Converts JSON files to CSV format — APIs, configuration files, and data exchange between web services to spreadsheets, database exports, and data imports. All conversion happens locally in your browser with no file size limits.
Converts CSV files to JSON format — spreadsheets, database exports, and data imports to APIs, configuration files, and data exchange between web services. All conversion happens locally in your browser with no file size limits.
Convert between JSON, CSV, XML, YAML, and Excel data formats. Pick any input and output format — your files never leave your device.
Bidirectional converter between iCalendar (ICS) and CSV formats. Migrate events between Google Calendar, Outlook, Apple Calendar, and spreadsheets.
Bidirectional converter between vCard (VCF) and CSV formats. Perfect for importing/exporting address books between any platform or service.
XLSX ↔ CSV Converter lets you bidirectional converter between Excel spreadsheets (XLSX) and CSV files. Select sheets, choose delimiters, and preview data before converting. Everything runs locally in your browser — nothing is uploaded.. It works on any device with a modern web browser.
Bidirectional converter between Excel spreadsheets (XLSX) and CSV files. Select sheets, choose delimiters, and preview data before converting. Everything runs locally in your browser — nothing is uploaded. It runs entirely in your browser — no software installation or data uploads required.
Upload a file from your device. Drag and drop or use the file picker to select your document.
Yes. After the initial page load, XLSX ↔ CSV Converter runs entirely on your device with no internet connection needed. All processing is done locally.
Yes, this tool is completely free with no usage limits, registration, or credit card required.
All processing happens locally in your browser. Your data is never uploaded to any server.
Yes. After the initial page load, the tool runs entirely offline without requiring an internet connection.
No. You can use this tool unlimited times with no quotas or restrictions.
Any modern web browser (Chrome, Firefox, Safari, Edge) on desktop or mobile. No installation needed.
JSON to XML
Converts JSON files to XML format — APIs, configuration files, and data exchange between web services to enterprise systems, SOAP APIs, document formats like DOCX and SVG. All conversion happens locally in your browser with no file size limits.
Archive Converter
Compress ZIP archives directly in your browser. Upload any file and download a standard ZIP archive — no uploads to servers, no file size limits.
MKV to MP4
Convert MKV video files to MP4 format directly in your browser. 100% free, private — your files never leave your device.
MOV to MP4
Convert MOV video files to MP4 format directly in your browser. 100% free, private — your files never leave your device.
WEBM to MP4
Convert WEBM video files to MP4 format directly in your browser. 100% free, private — your files never leave your device.
EPUB to PDF
Converts EPUB files to PDF format — e-readers, mobile devices, and accessible digital books to document sharing, printing, and archival with consistent formatting. All conversion happens locally in your browser with no file size limits.