Duplicate Value Checker and Remover

Data Duplicate Finder & Extractor

Find unique values, detect duplicates, count frequencies, and copy your results in multiple formats.

Input & Options

Paste Your Data

Value Separator Line Break Comma (,) Tab Custom Character

Trim leading and trailing whitespace Case-insensitive comparison (Data = data = DATA)

How it works

1. Paste your data.
2. Select the separator.
3. Choose whitespace and case options.
4. Results update automatically.
5. Select a copy format and copy the result.

Waiting for data...

Total Items: 0

Unique Values Each distinct value appears once

Unique: 0

JSON Array Horizontal Comma-Separated Vertical Comma-Separated Plain Vertical List

Editable output Generated

Duplicate Values Values appearing two or more times

Duplicates: 0

JSON Array Horizontal Comma-Separated Vertical Comma-Separated Plain Vertical List

Editable output Generated