CSV Column Analyzer
Report each column's type, fill rate, distinct values and — for numbers — its range and average.
Free No signup Runs in your browser — nothing uploaded
Result
How to use the CSV Column Analyzer
- Paste your content, or load a file.
- The result appears as you type.
- Copy or download the output.
Frequently asked questions
- Why does fill rate matter?
- A column that's 40% empty will quietly break joins, averages and imports. Better to know before you load it.
- Do my files get uploaded?
- No. This tool runs entirely in your browser, so the file never leaves your device.