Unix Timestamp Converter
Convert Unix timestamps to human-readable dates and vice versa. Supports seconds and milliseconds, live current timestamp. Free, private, no sign up.
Unix Timestamp → Human-Readable Date
Date & Time → Unix Timestamp
Features
100% Browser-Based
All timestamp calculations happen in your browser. Your data never leaves your device.
Free & No Sign Up
No registration, no limits, no hidden fees.
Instant Results
Real-time conversion, zero wait time.
Live Current Timestamp
See the current Unix timestamp ticking in real-time. Copy with one click.
Seconds & Milliseconds
Automatically detects and converts both second and millisecond timestamps.
How Do You Convert a Unix Timestamp?
- Paste or type a Unix timestamp into the input field — the tool auto-detects seconds (10 digits) or milliseconds (13 digits).
- The corresponding human-readable date and time appear instantly in both UTC and your local timezone.
- To convert a date to a timestamp, pick or type a date in the date/time input, and both second and millisecond timestamps are displayed.
- Watch the live current timestamp ticking at the top of ToolsMio and copy it with one click whenever needed.
- Switch between input modes freely — all conversions happen instantly in your browser with no server round-trips.
Common Use Cases
Debugging API Responses
APIs often return timestamps in seconds or milliseconds. Paste them into ToolsMio to quickly see the human-readable date and verify if the data is recent or stale.
Database Query & Log Analysis
Convert timestamps found in server logs and database records to readable dates to trace events, diagnose issues, or audit activity timelines.
Development & Testing
Generate specific timestamps for test data or validate timestamp-based logic in your code. The live timestamp feature on ToolsMio is handy for quick lookups.
Data Migration & Synchronization
When migrating data between systems that use different timestamp formats, convert between seconds and milliseconds to ensure consistency across platforms.
What Should You Know About Unix Timestamps?
- ✓ The Unix epoch starts at January 1, 1970, 00:00:00 UTC. All timestamps count forward from that moment — negative values represent dates before 1970.
- ✓ JavaScript uses millisecond timestamps (13 digits) while most Unix systems use seconds (10 digits). ToolsMio auto-detects which format you have pasted.
- ✓ Timestamps are always in UTC — they do not carry timezone information. When displaying a timestamp as a local time, your browser's timezone setting is applied.
- ✓ The Year 2038 problem affects 32-bit systems storing timestamps as signed 32-bit integers, which will overflow on January 19, 2038. Using 64-bit or millisecond formats avoids this.
- ✓ When working with APIs, always confirm whether timestamps are in seconds or milliseconds — mixing them up leads to dates that are either 50+ years in the past or far in the future.