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Just download it and enjoy. Easy, right?
CSV is a simple text format used to store tabular data, such as spreadsheets or databases. Each line represents a row, and values are separated by commas. CSV files are supported by nearly all spreadsheet and data-processing programs, making them a universal choice for data exchange.
XLSX is the modern Excel spreadsheet format introduced with Microsoft Office 2007. It uses ZIP compression and an XML-based structure, resulting in smaller files and better compatibility. XLSX supports advanced spreadsheet features and is widely used in business and data analysis.
Convert your .csv files to .xlsx right in your browser — no downloads, no installs. Everything happens securely in the cloud.
We never store your files permanently. Only you can access them, and they’re automatically deleted from our servers within 2 hours.
Turn your CSV files into XLSX in just a couple of clicks. No registration, no limits — and it’s 100% free.