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Data Analysis · browser workspace

Data Quality Score - Grade Your CSV Completeness

Score any CSV for completeness in seconds. See filled versus empty cells across thousands of rows and download a shareable quality report.

Quick start

Built for calculate completeness, validity, and overall quality percentage.

Everything runs in your browser, so you can test the workflow with sample data when available before using production files.

Output: A new file or report produced locally in your browser.

  1. 1Choose a supported file or use sample data when available.
  2. 2Set the options shown for this workflow.
  3. 3Process the file locally, inspect the result, and download a new copy.
Preparing your private workspace…

How to Data Quality Score

  1. 1Upload the dataset you want graded.
  2. 2The tool samples up to 10,000 rows and counts filled cells.
  3. 3Your completeness percentage is calculated cell by cell.
  4. 4Download the plain-text report for tickets or reviews.

Why Use This Tool?

  • ✓One Number - A single score stakeholders understand
  • ✓Cell Level Precision - Not just empty rows but empty fields
  • ✓Fast Sampling - Large files scored without full loads
  • ✓Shareable Output - Plain-text report attaches anywhere

Frequently Asked Questions

What is a good score?

Above 95% is excellent for imports. Scores under 80% usually mean optional columns or broken exports worth investigating.

Does a high score mean the data is correct?

No — completeness measures presence, not validity. Pair it with Type Detection and Missing Values for deeper checks.

Which rows are sampled?

The first 10,000 rows. For representative scoring of very large files, run Sample Rows first and score the random sample.