KeroTools

Data Tools

Convert between CSV, Excel and JSON — free, private, and entirely in your browser.

CSVXLS

CSV to Excel

Convert CSV to Excel right in your browser. Your file is parsed and converted locally — nothing is uploaded, stored, or shared.

XLSCSV

Excel to CSV

Convert Excel to CSV right in your browser. Your file is parsed and converted locally — nothing is uploaded, stored, or shared.

CSV{ }

CSV to JSON

Convert CSV to JSON right in your browser. Your file is parsed and converted locally — nothing is uploaded, stored, or shared.

{ }CSV

JSON to CSV

Convert JSON to CSV right in your browser. Your file is parsed and converted locally — nothing is uploaded, stored, or shared.

XLS{ }

Excel to JSON

Convert Excel to JSON right in your browser. Your file is parsed and converted locally — nothing is uploaded, stored, or shared.

{ }XLS

JSON to Excel

Convert JSON to Excel right in your browser. Your file is parsed and converted locally — nothing is uploaded, stored, or shared.

XLS<>

Excel to HTML

Convert Excel to HTML right in your browser. Your file is parsed and converted locally — nothing is uploaded, stored, or shared.

Merge CSV

Combine several CSV files into one, stacked in order and sharing the first file’s header — right in your browser. Nothing is uploaded.