Back
CSV Column Count
Count rows and columns in CSV data, automatically detect column count mismatches across rows. All processing happens in your browser.
CSV Column Count Checker: Guide
- Intent
- Count CSV rows and columns, then find rows whose column count differs from the header before importing the file elsewhere.
- What it does
- Counts rows and columns in pasted CSV data and flags rows whose column count differs from the first row.
- Key features
- Row count, Column count, Uneven-row detection, Automatic delimiter detection
- Privacy
- Everything runs locally in your browser. No uploads.
- Best for
- Checking a CSV before importing it into a spreadsheet or database
- Finding a row with a missing or extra field
- Quickly inspecting sample data while debugging an ETL or parser
- Why this tool
- Flags uneven rows instead of showing only one total
- Works without opening a spreadsheet application
- Links to focused delimiter and broken-CSV tools for deeper checks
How to use
- 1Paste CSV text into the input box or load the sample.
- 2Select Check columns.
- 3Review the row and column totals. Any row with a different width is highlighted.
Common mistakes
- If automatic delimiter detection is wrong, check the file first with Delimiter Detector.
- Quoted commas such as "ACME, Inc" are handled as part of one field.
- Blank lines are trimmed, so surrounding whitespace does not increase the row count.
Examples
Count a consistent CSV
Input:
id,name
1,Alice
2,Bob
Result:
Rows: 3
Columns in first row: 2
All rows have 2 columns
Find an uneven row
Input:
id,name
1,Alice
2,Bob,bob@example.com
3,Charlie
Result:
Rows: 4
Columns in first row: 2
Row 3 has 3 columns