CSV to Excel

Turn CSV or TSV into Excel XLSX with delimiter and encoding options. Preserve leading zeroes and formula-like text.

Your inputs stay here

Set your data

Choose files No file selected

Field delimiter

Original file encoding

Choose CSV or TSV and its original encoding. Detect the delimiter automatically or set it yourself. Convert and review the preview.

Result

Enter your data and run the tool. Your result will appear here.

The values you enter stay on this page. Reloading or closing it clears them.

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How to use the tool

Choose CSV or TSV and its original encoding.
Detect the delimiter automatically or set it yourself.
Convert and review the preview.

Initial form values
Parameter	Value
Field delimiter	Detect automatically
Original file encoding	UTF-8

Method and principles

Every cell is written as text to preserve identifiers, leading zeroes and long numbers.

Strings starting with = are not formulas.

Quoted delimiters and multiline values are respected.

Practical example

The code 00123 stays 00123 in Excel. The text =1+1 remains text and is not calculated.

Usage scenario

Input: CSV (UTF-8)
Result: XLSX

Formats and limits

Up to 100 MB, 100,000 rows, 1000 columns and 1,000,000 cells. UTF-8, UTF-16 LE, Windows-1252 and Shift_JIS encodings. Convert cells explicitly in Excel if you need numerical calculations afterwards.

PRACTICAL GUIDES

Export CSV without losing codes, characters or columns

A spreadsheet can look correct and change when reopened. Treat the delimiter, character encoding and column types as three separate choices.

Follow the steps

CSV to Excel

Set your data

Result

How to use the tool

Method and principles

Practical example

Usage scenario

Formats and limits

Export CSV without losing codes, characters or columns

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