Unix Timestamp Converter
Convert Unix timestamps to human-readable dates and vice versa. Supports seconds and milliseconds.
Common Timestamps
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What is Unix Timestamp Converter?
Convert between Unix timestamps and human-readable dates instantly. Supports both seconds and milliseconds formats, with automatic detection. See results in local time, UTC, ISO 8601, and relative format. Includes current timestamp display and common timestamp references. All processing happens client-side.
AllKit's Unix Timestamp Converter is completely free with no signup required. All processing happens directly in your browser — your data is never sent to any server, making it safe for sensitive information.
Why use AllKit?
- No ads, no distractions — a clean interface that lets you focus on the task
- Privacy-first — 100% client-side processing, nothing is uploaded
- Free forever — core tools are free with no usage limits
- API available — integrate into your workflow via our REST API
Frequently Asked Questions
What is a Unix timestamp?▾
A Unix timestamp (also called epoch time) is the number of seconds that have elapsed since January 1, 1970, 00:00:00 UTC. It's used universally in programming to represent dates and times as a single number.
What is the Year 2038 problem?▾
32-bit systems store Unix timestamps as signed 32-bit integers, which max out at 2,147,483,647 (January 19, 2038, 03:14:07 UTC). After this, the value overflows. Most modern systems use 64-bit timestamps, which last until the year 292 billion.
Seconds or milliseconds?▾
Unix timestamps in seconds have 10 digits (e.g., 1700000000). JavaScript and Java typically use milliseconds (13 digits, e.g., 1700000000000). This tool auto-detects the format.
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