csv2excel

A command-line tool that converts one or more CSV files into a single Excel (.xlsx) file. Each CSV file becomes a separate worksheet, named after the source file.

Features

• Merges multiple CSV files into one Excel workbook
• Auto-detects the delimiter (,, ;, \t)
• Supports UTF-8 and Windows-1252 encoding
• Tolerant with malformed CSV files (LazyQuotes)
• Version info injected at build time via git tags

Installation

From source

Requires Go 1.21+.

git clone https://code.beautifulmachines.dev/jakoubek/csv2excel
cd csv2excel
go install .

Build with Mage

Requires Mage.

mage Build          # current platform (auto)
mage BuildWindows   # dist/csv2excel.exe
mage BuildLinux     # dist/csv2excel
mage Install        # install to $GOBIN
mage Clean          # remove dist/

Usage

csv2excel [flags] file1.csv file2.csv ...

Flags

Flag	Default	Description
-o	output.xlsx	Output file path
-sep	auto	Delimiter: auto, ,, ;, \t
-enc	utf8	Encoding: utf8, windows1252

Examples

# Convert a single file
csv2excel data.csv

# Merge multiple files into one workbook
csv2excel -o report.xlsx sales.csv inventory.csv customers.csv

# Force semicolon delimiter, Windows-1252 encoding
csv2excel -sep ";" -enc windows1252 -o result.xlsx export.csv

Each CSV file becomes a worksheet named after the filename (without extension). Sheet names are truncated to 31 characters to comply with Excel's limit.

Dependencies

• excelize — Excel file creation and manipulation
• golang.org/x/text — Character encoding support

License

MIT