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CSV Numeric Column Detector

Identify columns whose non-empty data cells are all finite decimal numbers.

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CSV number column finder online

Identify columns whose non-empty data cells are all finite decimal numbers. Use this when inspecting structured input or preparing a data or code artifact. Generated commands and configurations remain text until you review and use them yourself.

How to use it

Paste the multi-line input in the format shown below. Choose Run tool. Review the output, then copy or download it.

Worked examples

Use this when inspecting structured input or preparing a data or code artifact. Generated commands and configurations remain text until you review and use them yourself.

Reproducible worked example

Settings: No additional settings.

Input:

name,team,amount
Anna,A,10
Ben,B,20
Cara,A,30

With the input and settings above, the tool produces:

Output:

[
  {
    "column": "name",
    "nonempty": 3,
    "numeric": false
  },
  {
    "column": "team",
    "nonempty": 3,
    "numeric": false
  },
  {
    "column": "amount",
    "nonempty": 3,
    "numeric": true
  }
]

The example returns 3 top-level items in an array. Each item is a record; the first record contains “column”, “nonempty”, “numeric”.

Limitations and common mistakes

Results reflect your supplied input and selected settings. Check the worked example and output before reuse.
Combined input is bounded to 150,000 characters; output text is bounded to 1.2 million characters. Some algorithms impose smaller limits, stated in their error messages.

Frequently asked questions

What format should I enter?

Paste the multi-line input in the format shown below. The worked example shows the supported structure and actual output.

How can I identify numeric CSV columns online?

Paste the multi-line input in the format shown below. Choose Run tool. Review the output, then copy or download it.

Where is my input processed?

The bundled tool processes input in your browser. It does not upload tool input to a conversion service. Other site plugins, analytics, advertising and browser extensions may have separate behavior.