CSV Row Counter
Count the rows in a CSV file.
How many records
The number of rows in a CSV tells you how many records it holds, a basic but frequently-needed figure. This counts the rows in a CSV, in your browser, so you get the count without opening a large file in a spreadsheet.
Load a CSV to count its rows.
A simple count with real uses
Counting rows sounds trivial but answers genuinely useful questions. It tells you the size of a dataset at a glance, which matters for knowing what you are dealing with before processing it. It is a quick data-quality check — confirming a file has roughly the expected number of records, or spotting that an export came out short or a merge produced too many. It also helps verify operations worked, by comparing counts before and after filtering, deduplicating or merging. For very large files that are slow or awkward to open in a spreadsheet, a quick row count avoids loading the whole thing just to see how big it is. One small but important detail is whether the header row is counted — usually you want the count of data records, excluding the header, which a proper count handles. Doing it in the browser keeps even a large sensitive file local while you check its size.
Questions & answers
Why count CSV rows?
To know a dataset's size, check a file has the expected number of records, or verify operations worked by comparing counts before and after.
Does it count the header row?
Usually you want the count of data records excluding the header, which a proper count handles rather than including the column-name row.
Is my data uploaded?
No. The count happens in your browser, so the data stays on your device.