Timestamp Converter
Convert Unix timestamps to human-readable dates and vice versa instantly. Supports multiple timezones, formats, and precise calculations. All processing happens in your browser for complete privacy.
Perfect for Developers
Enter a timestamp or date to see the conversion
Popular Examples
Understanding Unix Timestamp: Epoch Time Explained
A Unix timestamp (POSIX time or Epoch time) represents seconds elapsed since January 1, 1970, 00:00:00 UTC—the Unix Epoch. Defined by IEEE Std 1003.1 (POSIX.1), this standard eliminates timezone ambiguity across systems. Used in Linux, macOS, databases, and APIs, Unix time provides universal date representation for distributed systems.
Why Unix Timestamps?
Real-World Use Cases
Timestamp Format Comparison: Unix vs ISO 8601 vs RFC 3339
Unix Timestamp (Seconds)
Standard 10-digit format counting seconds since Epoch. Per ISO/IEC 9945, used in C time(), Python time.time(), PHP time(). Example: 1704463845 = January 5, 2024, 14:30:45 UTC.
Millisecond Precision Timestamps
13-digit format with millisecond accuracy. JavaScript Date.now() and Java System.currentTimeMillis() use this format. Example: 1704463845000 adds three digits for milliseconds.
ISO 8601 Date Format
International standard per ISO 8601:2019. Format: 2024-01-05T14:30:45Z. The "Z" suffix indicates UTC (Zulu time). Human-readable with timezone information.
RFC 3339 Internet Timestamp
Internet standard defined by RFC 3339. Format: 2024-01-05T14:30:45-05:00 with explicit timezone offset. Profile of ISO 8601 for internet protocols.
Professional Unix Timestamp Converter Use Cases
API Development & Debugging
Debug REST API responses, validate GraphQL timestamp fields, test webhook deliveries. Convert between Unix timestamps and ISO 8601 for OpenAPI specifications. Essential for microservices and serverless functions.
Database Timestamp Management
Convert MySQL UNIX_TIMESTAMP(), PostgreSQL extract(epoch), MongoDB ISODate values. Analyze timestamp indexes, optimize date range queries, migrate between storage formats.
Server Log Analysis
Parse Apache/Nginx access logs, analyze syslog timestamps, correlate CloudWatch events. Convert between log formats for SIEM integration and incident response.
Security & Compliance Auditing
Audit trail analysis for GDPR compliance, SOC 2 reporting, PCI-DSS logs. Reconstruct security event timelines with precise timestamps.
Client-Side Timestamp Conversion: No Server Required
All conversions execute in your browser using JavaScript Date APIs. No server requests, no data logging, no analytics tracking. Your API timestamps, database values, and production logs remain private. Ideal for confidential enterprise work.
Unix Timestamp Converter FAQ
How do I convert Unix timestamp to human-readable date?
Enter your Unix timestamp (10 digits like 1704463845) in the converter above. The tool auto-detects seconds vs milliseconds format and displays the date in your selected timezone. Supports seconds (10 digits), milliseconds (13 digits), and microseconds (16 digits).
What's the difference between Unix seconds and milliseconds?
Unix seconds (10 digits) count since 1970 in whole seconds. Milliseconds (13 digits) add three decimal places. JavaScript Date.now() returns milliseconds, while C time() returns seconds. Most databases store seconds. Our converter auto-detects the format.
How do timezones work with Unix timestamps?
Unix timestamps always represent UTC (Coordinated Universal Time). They're timezone-neutral—the same number represents the same moment globally. When displaying, we apply timezone offset. 1704463845 shows as 2:30 PM UTC, 9:30 AM EST, or 8:00 PM IST—same instant, different local times.
Can I convert dates to Unix timestamps?
Yes. Enter dates in formats like "2024-01-15", "01/15/2024 2:30 PM", "January 15, 2024", or ISO 8601. The parser handles multiple formats and respects your timezone selection for accurate conversion to Unix seconds or milliseconds.
What is the Year 2038 problem with Unix timestamps?
32-bit signed integers overflow at 2,147,483,647 seconds (January 19, 2038, 03:14:07 UTC). Systems using 32-bit time_t will fail. Modern systems use 64-bit timestamps supporting dates until year 292 billion. Check your database and programming language timestamp size for Y2038 compliance.