Timestamp Converter — Unix Timestamp Date Converter
Convert between Unix timestamps and human-readable dates. Supports seconds, milliseconds, and microsecond input with automatic detection. Bidirectional conversion with timezone awareness. 100% client-side — no data is sent anywhere.
How to Use the Timestamp Converter
- Timestamp to Date: Paste a Unix timestamp in seconds or milliseconds — the tool auto-detects the unit.
- Manual unit selection: Override auto-detection by choosing seconds or milliseconds explicitly.
- Date to Timestamp: Use the datetime picker to select a date and get the corresponding Unix timestamp.
- View current time: The live timestamp at the top updates every second.
Why Use This Timestamp Converter
Unix timestamps are everywhere in software — APIs, databases, logs, and configuration files.
But raw timestamps like 1719321600 are meaningless to humans. This converter provides
instant bidirectional conversion with support for auto-detection of seconds vs. milliseconds,
multiple output formats (ISO 8601, RFC 2822, UTC, local), and relative time display.
Essential for debugging timestamp issues, converting API responses, inspecting database records, and validating time-sensitive logic in your applications.
Frequently Asked Questions
A Unix timestamp is the number of seconds (or milliseconds) that have elapsed since January 1, 1970 00:00:00 UTC, known as the Unix epoch. It's a universal time representation used across programming languages and systems.
The auto-detect feature checks the magnitude: timestamps above 10^12 are treated as milliseconds, those below as seconds. For example, 1719321600 (10 digits) is seconds, while 1719321600000 (13 digits) is milliseconds.
32-bit signed Unix timestamps overflow on January 19, 2038. Modern systems use 64-bit timestamps, which won't overflow until the year 292,277,026,596. This tool handles both 32-bit and 64-bit timestamps.
Use Cases
API Response Debugging
Convert timestamp fields in JSON responses to human-readable dates during API debugging.
Log Analysis
Convert log timestamps to understand event timelines and identify issues.
Database Record Inspection
Quickly convert created_at / updated_at timestamps in database queries to readable dates.
Configuration Validation
Verify expiry dates, token lifetimes, and scheduling timestamps in config files.