Number Format Converter
Standardize number formats (currency, decimals, thousands)
Input
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FAQ
What number formats does this converter support?
The converter handles all common number formats including US format (1,234.56), European format (1.234,56), Swiss format (1'234.56), currency symbols ($, €, £, ¥), percentages (45%), and scientific notation (1.23e+4). It auto-detects the input format per column.
How do I convert European numbers (1.234,56) to US format (1,234.56)?
Upload your CSV, select the column(s) with European-format numbers, choose 'European (period as thousands, comma as decimal)' as the input format, and 'US (comma as thousands, period as decimal)' as the output. The tool converts all values in the selected columns in one click.
Can I remove currency symbols like $ or € from numbers?
Yes. The converter detects currency symbols in numeric columns and can strip them to leave clean numeric values. You can also add a currency symbol to a column of plain numbers. This is useful when preparing financial data for analysis or chart creation.
Does it work on multiple columns at once?
Yes. The tool scans your CSV for all columns that contain numeric data and lets you apply format conversions to individual columns or all numeric columns at once. Each column can have a different source format — the auto-detection works per column.
Is my data uploaded to a server?
No. This tool processes your CSV entirely in your browser using JavaScript. Your data never leaves your device and is never sent to any server. Once you close the page, the data is gone.
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