CSV Row Filter
Use CSV Row Filter locally in your browser.
Your inputs
Your inputs and files stay on your device.
Your result
A little input. A useful answer.
Enter your values and run the tool to see your result here.
How to use this tool
About CSV Row Filter
Use this CSV Row Filter for a quick result with clear validation and copyable output. It is designed to be simple on phones and desktops alike.
Does this tool send my data anywhere?
No. Its calculation or transformation happens on your device.
Using CSV Row Filter with the right inputs
Use CSV Row Filter locally in your browser. Start by matching your task to the quantities and options shown below. The definitions of the inputs matter as much as the final number or transformed output; retain the original values so that you can repeat or check the result.
Inputs and options explained
- Header to search: enter the value or text requested by this field. Check spelling, separators and case when they are significant to the operation.
- Text to keep: enter the value or text requested by this field. Check spelling, separators and case when they are significant to the operation.
- Match case: enable this option only when you want that condition to apply; compare it with the option disabled if you are checking its effect.
- CSV data: paste the source text without omitting meaningful spaces, quotation marks or line breaks. Begin with a small representative sample so that you can check the transformation before processing a longer input.
Checking the result
Begin with a small input whose expected result you can check by inspection or a separate calculation. Apply the selected operation, compare the output with that expectation, and then change one input or option at a time. This helps distinguish a change caused by your settings from a difference in the source data.
Interpretation and limitations
Check the delimiter, header row, quoted fields and line endings before processing. A comma inside a quoted field is data, not a column boundary. After conversion, compare row counts and identifiers, especially values with leading zeroes, dates and long digit strings.
Why can another application read the result differently?
Importers may guess delimiters and automatically convert text to numbers or dates. Select explicit import settings when possible and check a few representative rows after opening the output.
Before you use the output
- Choose the intended action: Filter CSV rows. Re-run the operation after changing an input or mode so that you are checking the updated result.
- Read the result label and any accompanying explanation. Keep the input values or source file with the output so that a later comparison uses the same assumptions.
- If a result looks unexpected, check units, separators and selected options first. Try a smaller example you can verify rather than repeatedly changing several settings at once.
Questions or a result that needs checking?
If you find a discrepancy, report a problem with CSV Row Filter. Include a non-sensitive example, the selected options, the result you expected and the result shown. This makes the issue easier to reproduce. See About & privacy for how the site handles tool inputs.