CSV to Excel Converter
Converting CSV files to Excel transforms raw comma-separated data into a fully formatted spreadsheet with proper data types, column widths, and the full power of Excel's analysis and visualization tools. Raw CSV data often opens in Excel as unformatted text — dates may not sort correctly, numbers lose leading zeros, and columns are cramped to default widths. SublimePDF's converter intelligently detects data types, formats columns appropriately, and produces a ready-to-use .xlsx file with auto-fitted columns and native cell types. Ideal for analysts, accountants, and anyone who regularly imports CSV data for reporting.
Convert CSV to Excel instantly in your browser — no file uploads, no registration, and completely free.
Drop your CSV files here
or click to browse — up to 50MB
How to Convert CSV to Excel Online
Upload your CSV file
Drag and drop your .csv file. The converter auto-detects the delimiter (comma, semicolon, tab, or pipe), text encoding (UTF-8, Latin-1, etc.), and quoting conventions.
Review detected columns and data types
Preview the parsed data with detected column names, data types (text, integer, decimal, date, currency), and total row count. Override the automatic detection if needed — e.g., force ZIP codes or product IDs to text type to preserve leading zeros.
Download your Excel file
Your .xlsx file opens in Excel with properly typed cells, auto-fitted column widths, a bold formatted header row, and data ready for sorting, filtering, pivot tables, and charting.
CSV to Excel Converter Features
When to Convert CSV to Excel
- Import CSV data exports from SaaS applications and web tools into Excel for analysis and reporting
- Open CSV bank statements and financial transaction logs in Excel with proper date and currency formatting
- Convert CSV database exports into formatted, filterable spreadsheets for business stakeholders
- Prepare CSV server log files and analytics data dumps as readable Excel workbooks for review
- Transform CSV API response data into polished Excel reports for non-technical teams and management
About CSV and Excel
What is CSV?
Comma-Separated Values (.csv) — A simple data format where values are separated by commas, widely used for data exchange. Learn more about CSV →
What is Excel?
Microsoft Excel Spreadsheet (.xls, .xlsx) — The standard spreadsheet format for organizing, analyzing, and visualizing data. Learn more about Excel →
Privacy & Security
Your files never leave your device. All conversion happens locally in your browser using WebAssembly technology.
CSV to Excel Conversion FAQ
Will dates be recognized as proper Excel dates?
How are leading zeros preserved?
What if my CSV uses semicolons instead of commas?
How are multi-line values handled?
Will the Excel file have formatted headers?
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