Unix Timestamp Converter

Unix ↔ ISO, every format

Current Unix time

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Paste a date/time, e.g. 2026-06-01T12:00:00Z

More browser-only tools, free and no upload.

Questions

Is Unix Timestamp Converter free?
Yes. Unix Timestamp Converter is completely free, with no account, no sign-up, and no usage limits. It runs entirely in your browser.
Do my files get uploaded when I use Unix Timestamp Converter?
No. Unix Timestamp Converter processes everything on your device, so your files and text never leave your browser. You can verify it yourself: open your browser's Network tab and you'll see no uploads.
How do I use Unix Timestamp Converter?
Open Unix Timestamp Converter in your browser, no install or sign-up needed, then paste, type, or drop in your input and the result appears instantly. Live Unix timestamp encoder/decoder. Auto-detects seconds, milliseconds, microseconds, nanoseconds. Shows ISO 8601 UTC + local, pretty UTC + local, your timezone, and relative time. Click-to-copy any value.
Is there a file size limit in Unix Timestamp Converter?
There's no hard file or text size limit. Because Unix Timestamp Converter runs locally in your browser, the only ceiling is your device's available memory, and everyday files process instantly.