CSV to Excel, in your browser
CSV is great for exchange but awkward to work in — no column types, no formatting, and Excel often mangles it on open (dropping leading zeros, misreading dates). Converting to a proper .xlsx workbook gives you a clean spreadsheet that opens perfectly in Excel, Google Sheets or Numbers, ready to sort, filter and format.
Mynify converts entirely in your browser — your data is never uploaded.
How it works
Mynify parses the CSV correctly (handling quoted fields and embedded commas), builds a worksheet from the rows, and writes a standard .xlsx workbook you can open directly — no import wizard required.
When to use it
- Handing data to colleagues who work in Excel.
- Cleaning up a CSV that Excel otherwise imports messily.
- Building a workbook you’ll add formulas or charts to.
Need the reverse? Excel to CSV goes the other way. Free, unlimited, no signup, no watermark — your data never leaves your device.