CSV Unique Values Counter

Count distinct, unique values and uniqueness cardinality in a designated CSV column.

How It Works & Processing Standards

Count distinct, unique values and uniqueness cardinality in a designated CSV column.

Your input data is never sent to any server and is securely processed on your device.

Current Limits

  • Desktop max file size: 50MB
  • Mobile max file size: 20MB

CSV Unique Values Counter is a 100% free, browser-based online utility. All calculations and file conversions run locally inside your browser (Local-First) without sending data to remote servers, keeping your documents and inputs strictly private.

How to Use CSV Unique Values Counter

  1. 1
    Input CSVEnter your CSV table.
  2. 2
    Select ColumnChoose the column to analyze.
  3. 3
    View CardinalitySee distinct count, total count, and uniqueness ratio.

Examples

Distinct Value Count
Input: category Electronics Books Electronics Clothing Books
Result: Distinct Values: 3 (Total Rows: 5, Uniqueness: 60%)

Common Use Cases

  • Checking candidate primary key columns for 100% uniqueness
  • Measuring categorical diversity in survey questionnaires
  • Auditing index selectivity before designing database tables

Frequently Asked Questions (FAQ)

Can I view the list of unique values?

Yes, the tool lists each unique value along with its occurrence count.

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