100% browser-based — your files never leave your device

Excel & CSV tools, no upload needed

Fast, private spreadsheet tools that run entirely in your browser. No sign-up required to get started.

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Private by default

Files are processed in your browser. Nothing is sent to our servers.

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Instant conversion

No waiting for uploads or server processing. Results in seconds.

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Free to start

3 free conversions per day, no account needed. Upgrade for unlimited.

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📊Free

CSV to Excel

Convert CSV files to .xlsx instantly in your browser.

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Excel to CSV

Convert Excel spreadsheets to CSV files in your browser.

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More tools coming

Excel to CSV, merge files, and more.