CSV to Excel Converter
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Export an Excel worksheet to CSV with the delimiter you choose.
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Convert CSV rows into a JSON array of objects.
CSV Tools
Merge, split, de-duplicate, filter and clean CSV columns.
How to use CSV to Excel
- Choose your file (or drop it onto the page).
- Adjust the options shown.
- Select the action button and wait for it to finish.
- Review the result, then download it.
What to expect
A new file is created. Your original file is never modified.
- Only values are written — no formulas, charts or styling beyond a bold, frozen header row.
- One worksheet is created.
Frequently asked questions
Why do my leading zeros survive?
By default every cell is stored as text. Turn on “Store numeric-looking values as numbers” if you want real numbers instead.
Is my CSV uploaded anywhere?
No. The CSV is read and processed by JavaScript in your browser. Only the website's own code and assets are downloaded.
Do I need to create an account?
No. Every tool works without sign-up or login.
Is it safe for confidential documents?
Files are processed locally in your browser and never uploaded. Close the tab or select Clear to release them from memory.