Convex Tools

Timestamp to Date Converter

Free, Open Source & Ad-free

Timestamp (milliseconds or seconds)

Date (UTC)

—

Date (Local)

—

Easily convert Unix timestamps into human-readable dates. Ideal for debugging logs, analyzing datasets, or working on web development projects.

Features

  • Instant Conversion: Converts timestamps automatically.
  • Accurate Results: Shows both UTC and local time.
  • Open Source: Made with 💜 by Convex Converter.dev.

How to Use Convex Converter's Timestamp Converter

  1. Input the timestamp in seconds or milliseconds.
  2. Your date is displayed instantly in UTC and local time.
  3. Copy the result for further use.

What is a Unix Timestamp?

A Unix timestamp represents the number of seconds since January 1st, 1970 UTC. It’s widely used for logging, file systems, and computing.

The Year 2038 problem affects 32-bit integers and can cause overflow; using 64-bit integers solves this limitation.

Example Code (JS/TS)

function convertTimestampToDate(timestamp: string) {
  let date: Date;

  if (/^\d{11,13}$/.test(timestamp)) {
    date = new Date(parseInt(timestamp, 10));
  } else if (/^\d{1,10}$/.test(timestamp)) {
    date = new Date(parseInt(timestamp, 10) * 1000);
  } else {
    throw new Error("Invalid timestamp format");
  }

  if (isNaN(date.getTime())) throw new Error("Invalid date");

  return date.toUTCString();
}

FAQs

  • Accuracy: Both UTC and local times are precise.
  • Suitable for all timestamps: Works for seconds and milliseconds.
  • Ease of use: Instant conversion; copy-ready output.
  • Year 2038 issue: Occurs on 32-bit timestamps; 64-bit avoids the problem.