Date Format Converter
Standardize date formats across your CSV data — free, browser-based, no upload required
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FAQ
What date formats does this converter support?
The converter auto-detects most common date formats including MM/DD/YYYY, DD/MM/YYYY, YYYY-MM-DD, DD-Mon-YYYY, Unix timestamps, and ISO 8601. It handles separators like slashes, dashes, dots, and spaces.
How does it handle ambiguous dates like 01/02/2026?
When a date could be MM/DD or DD/MM, the tool analyzes your entire dataset for context clues. If other dates in the same column have values above 12 in the first position, it treats the column as DD/MM. You can also manually specify the input format to resolve ambiguity.
Can I convert dates in multiple columns at once?
Yes. The tool detects all columns containing date values and lets you convert them individually or all at once. Each column can have a different input format — the auto-detection works per column.
Does this tool handle timezone conversions?
Yes. If your dates include timezone information (e.g., UTC offsets or timezone names), you can convert between timezones. For dates without timezone data, you can specify the source timezone before converting.
Is my data uploaded to a server?
No. This tool processes everything in your browser using JavaScript. Your CSV data never leaves your device. Once you close the page, the data is gone.
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