About This Tool

A fast, browser-based Unix timestamp converter for developers. Converts in both directions with auto-detection of seconds vs. milliseconds.

100% Client-Side

All conversions use your browser's built-in Date object. Nothing is transmitted to any server.

Features

• Live ticking Unix timestamp clock
• Epoch → Date: UTC, local, ISO 8601, relative time, day of week, week of year
• Date → Epoch: configurable date/time fields, UTC or local timezone
• Auto-detects millisecond timestamps (13+ digits)
• Real-time conversion as you type

Contact

Questions or feedback? Reach us at the feedback link in the navigation.