Santekno/tools

Unix Timestamp Converter

Convert Unix timestamps to human-readable dates and vice versa.

Processed in your browserUpdated · Jan 2026
Input
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Output
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How to use Unix Timestamp Converter

Paste your input on the left, choose the options you want, and the output appears instantly on the right. Everything runs in your browser — none of your data is sent to a server.

  • Paste or type your input in the INPUT panel
  • The output regenerates automatically as you type
  • Use Copy to put the result in your clipboard
  • Click Sample to load a working example

What is Unix Timestamp Converter?

Unix Timestamp Converter converts between Unix timestamps (seconds since January 1, 1970 UTC) and human-readable date/time strings. Supports both seconds and millisecond timestamps, and multiple output formats including ISO 8601, UTC, and local time. This tool is part of santekno's developer toolbox — a curated collection of utilities built for engineers who care about speed, privacy, and simplicity.

Common use cases

  • Debugging API payloads and integration issues
  • Inspecting tokens, hashes, or encoded strings during development
  • Generating fixtures and sample data for tests
  • Sharing readable output with teammates in code reviews

FAQ

A Unix timestamp is the number of seconds elapsed since January 1, 1970 at 00:00:00 UTC (the Unix epoch).

The Year 2038 problem affects 32-bit signed integers. 64-bit systems are safe until year 292 billion.

Unix timestamps in seconds are 10 digits (e.g., 1700000000). Millisecond timestamps are 13 digits.

Click the "Now" button to load the current Unix timestamp.

Unix timestamps are always UTC. The local time display converts to your system timezone.