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CSV Numeric Punctuation Converter
Change selected CSV decimal and grouping punctuation while preserving every admitted digit.
Pasted CSV, One UTF-8 CSV/TSV/text file
numeric-punctuation.csv, numeric-punctuation-report.json
Browser only
Runs locally in your browser. Your files, pasted content and generated output are not uploaded. Reset clears this tool’s working data.
This tool needs JavaScript. If it does not load, refresh the page and try again.
How to use this tool
- Enter the admitted input using CSV input, Input delimiter, Columns (blank means all), Source decimal, Source grouping, Target decimal, Target grouping, Non-numeric fields. A selected UTF-8 source file takes precedence over paste.
- Use the explicit mode and declared finite options. Only selected operation fields participate.
- Select Convert numeric punctuation and download numeric-punctuation.csv, numeric-punctuation-report.json.
Examples
The default values 1234.50 and 001 preserve every digit. Choosing comma for Target decimal emits the complete 1234,50 field with CSV quoting.
Limitations
- 5 MiB input; 50,000 data rows, 500 columns and 500,000 cells. Selected tokens at most 10,000 UTF-16 units; combined artifacts 20 MiB and a 30-second processing limit.
- Strict declared punctuation grammar; no locale inference, rounding, precision, currency, percentage or scientific notation. Spreadsheet protection may prefix generated signed grouped/comma-decimal fields.
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