Data Cleaning Tool

Data Cleaner

Upload a messy CSV or Excel file and get a cleaner, standardized version with duplicate handling, date normalization, typo correction, and flexible missing-value rules.

Choose File

Drag and drop your file here

or click below to choose a file manually

No file selected

Supported for now: .csv and .xlsx files.

Missing Value Handling

Choose how you want missing values handled in the cleaned output.

Duplicate Check Columns

Optional. Enter comma-separated column names to define duplicates for this file. Leave blank to use the app’s default logic.

Data Cleaner

Cleaning Summary

Cleaning Mode

Inferred Domain Profile

Normalized Date Columns

Normalized Numeric Columns

Duplicate Check Columns

Final Columns

Applied Business Rules

Missing Values Before Cleaning

Missing Values After Cleaning

Changed Cells Summary

Total Changed Cells

Changed Cells by Column

Changed Cells Preview

Before Cleaning Preview

After Cleaning Preview