Convert CSV to XLSX
Create an Excel workbook from CSV rows in the browser.
Local converter
Processed in your browser. Files do not leave your device.
Overview
CSV to XLSX creates a spreadsheet workbook from CSV rows through the shared browser-local worker path. This preview reuses the hardened tabular parser, row and cell limits, binary download support, and spreadsheet formula neutralization already added for the P0 data tools.
Use Cases
- Turn CSV exports into an XLSX workbook for spreadsheet review.
- Create formula-safe Excel files from browser-local CSV data.
- Prepare CSV data for teams that prefer workbook downloads over plain text files.
Limitations
- This preview accepts one CSV file with a header row and creates one worksheet.
- Rows, columns, and cell sizes are capped before the workbook is generated.
- Very large CSV files can still be constrained by browser memory and XLSX package size.
FAQ
Does this CSV to XLSX converter upload my file?
No. The selected CSV file is read by the browser and converted through a local worker for this preview tool.
How are spreadsheet formulas handled?
Formula-like cell values are neutralized by default so generated workbook cells remain literal text instead of executable spreadsheet formulas.
Related Tools
Remove Duplicate Rows
Keep the first copy of each CSV row and remove later duplicates.
Remove Empty Rows
Delete blank CSV rows while keeping real data in order.
Merge CSV
Combine CSV files into one spreadsheet-ready CSV in the browser.
CSV to JSON
Turn CSV rows into structured JSON objects.
XLSX to CSV
Extract worksheet rows from an XLSX workbook as CSV.
JSON to CSV
Turn arrays or objects into spreadsheet-ready CSV.