Free Online Timestamp Converter
It also tells you which unit you pasted, which is the usual cause of a date landing in 1970 or 45000.
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How to use Timestamp Converter
- Paste the timestamp, or pick a date.
- Check seconds versus milliseconds detection.
- Read local, UTC and ISO output.
Questions about Timestamp Converter
Why is my date in January 1970?
You passed a value in the wrong unit or a string that parsed to zero.
Which time zone is used?
Your browser zone for the local row, plus explicit UTC and ISO strings.
About Timestamp Converter
Convert Unix timestamps to readable dates with our free online Timestamp Converter. 100% browser-based, fast, and private—no login or file uploads required.
These calculators and converters turn everyday numbers into answers instantly: percentages, BMI, loans and interest, units, colours and dates, with the formula shown so you can check the working.
This tool runs in your browser. The file is not uploaded. Results update as you type and are rounded for display; for money or legal figures keep the unrounded value and double-check against your own spreadsheet before relying on it.