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CSV Cleaner Pro

1 Upload Your File

Supports CSV, XLS, and XLSX files.

2 Choose Cleaning Options

Basic Cleaning
ⓘChanges 'Column Name' to 'column_name'. Makes titles simple and consistent.
ⓘRemoves spaces from the beginning and end of each text cell.
ⓘDeletes any rows that are completely empty.
ⓘDeletes any rows that are exact copies of another row.
Data Formatting
Download Settings

Cleaned Data Preview

The Easiest Way to Clean CSV & Excel Files

Upload your file to get started. Our tool can fix messy data, standardize column headers, remove duplicates, format dates, and much more. Your data is processed securely and is never stored on our servers.

How It Works in 3 Simple Steps

Clean your data files without any software or sign-ups.

1

Upload Your File

Drag and drop or select your CSV, XLS, or XLSX file.

2

Choose Cleaning Options

Select from a wide range of formatting and cleaning rules.

3

Preview & Download

Instantly preview the cleaned data and download your file.

Powerful Data Cleaning Features

Everything you need to get your data ready for analysis.

✓

Standardize Headers

Automatically convert column titles to a consistent format like 'snake_case'.

✓

Remove Duplicates

Find and delete rows that are exact copies of another row.

✓

Trim Whitespace

Remove extra spaces from the beginning and end of all text cells.

✓

Delete Blank Rows

Get rid of empty rows that can interfere with your analysis.

✓

Normalize Dates

Convert various date formats into a single, standardized format (e.g., YYYY-MM-DD).

✓

Format Numbers

Clean up numeric columns and format them as integers or decimals.

Frequently Asked Questions

Is my data safe?

Yes. Your privacy is our top priority. All file processing happens directly in your browser. Your data is never uploaded to, or stored on, our servers.

What file types do you support?

We currently support the most common spreadsheet formats: CSV (.csv), Microsoft Excel (.xls, .xlsx), and other delimited text files.

Is this data cleaning tool free to use?

Yes, CSV Cleaner Pro is completely free to use. There are no hidden costs, usage limits, or sign-up requirements.