Unix Timestamp Converter
Convert between Unix epoch timestamps and human-readable dates with relative time ("3 days ago", "in 2 hours"). Auto-detects seconds vs milliseconds. One workbench for both directions.
Everything runs in your browser. Your input is never uploaded, stored, or logged on our servers.
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Read guideFrequently asked questions
Does it show relative time?+
Yes. When converting a timestamp to a date, the workbench shows relative time like "5 minutes ago" or "in 2 days" alongside local, ISO, and UTC formats.
Seconds or milliseconds?+
Both. Values with 13+ digits are treated as milliseconds; 10-digit values are seconds. The detected unit is shown in the result.
Is this tool free?+
Yes. Every Utiliio utility is free with no sign-up, usage limits, or paywalls.
Do you store my data?+
No. Processing happens entirely in your browser. Your input never leaves your device.
Can I use this tool offline?+
Yes. Once the page loads, most tools continue working without an internet connection.