Timezone Converter
Convert Unix timestamps, compare timezones, and format dates instantly.
Current Time
Input
Output
Quick Comparison
| City | Timezone | Time | Offset | DST |
|---|---|---|---|---|
| UTC | UTC | 2026-04-01 16:46:37 | UTC+00:00 | — |
| Seoul | Asia/Seoul | 2026-04-02 01:46:37 | UTC+09:00 | — |
| Tokyo | Asia/Tokyo | 2026-04-02 01:46:37 | UTC+09:00 | — |
| Shanghai | Asia/Shanghai | 2026-04-02 00:46:37 | UTC+08:00 | — |
| Mumbai | Asia/Kolkata | 2026-04-01 22:16:37 | UTC+05:30 | — |
| Berlin | Europe/Berlin | 2026-04-01 18:46:37 | UTC+02:00 | Active |
| London | Europe/London | 2026-04-01 17:46:37 | UTC+01:00 | Active |
| New York | America/New_York | 2026-04-01 12:46:37 | UTC-04:00 | Active |
| Chicago | America/Chicago | 2026-04-01 11:46:37 | UTC-05:00 | Active |
| Los Angeles | America/Los_Angeles | 2026-04-01 09:46:37 | UTC-07:00 | Active |
Real-time Clock
Live-updating Unix timestamp and UTC/local time, refreshed every second.
DST Auto-Detection
Automatically detects Daylight Saving Time status for every timezone.
100% Client-Side
All conversions happen locally in your browser. No data is ever sent to a server.
What Is Timezone Converter?
Timezone Converter is a free, browser-based tool that converts Unix timestamps to human-readable dates, transforms date strings into epoch time, and compares the current time across 10 major world timezones — all without sending any data to a server.
Related Tools
Key Features
- Unix Timestamp ↔ Date conversion with auto-detection (10-digit seconds vs 13-digit milliseconds)
- Multiple output formats: ISO 8601, RFC 2822, SQL Timestamp, Unix seconds/milliseconds, and more
- Live-updating real-time clock with Unix timestamp, local time, and UTC time
- Quick comparison table showing 10 major cities with timezone, offset, and DST status
- Relative time display (e.g., "5 minutes ago") for converted dates
- One-click copy for every value and format
Supported Formats
- ISO 8601 (e.g., 2024-01-15T09:30:00.000Z)
- RFC 2822 (e.g., Mon, 15 Jan 2024 09:30:00 +0000)
- SQL Timestamp (e.g., 2024-01-15 09:30:00)
- Unix Timestamp in seconds (10-digit) and milliseconds (13-digit)
- Short Date (YYYY-MM-DD) and Short Time (HH:mm:ss)
- Full human-readable format (e.g., Monday, January 15, 2024 9:30:00 AM)
How It Works
Simply enter a Unix timestamp or a date string into the input field. The tool automatically detects whether you entered seconds, milliseconds, or a date string, and instantly converts it to all supported formats. The comparison table updates in real-time to show the equivalent time across 10 major world cities.
Privacy & Security
Timezone Converter runs entirely in your browser using the dayjs library and the IANA timezone database. No data is transmitted to any server. All processing happens locally on your device, making it safe to use with any timestamp or date value.
Frequently Asked Questions
- What is epoch time?
- Epoch time (also called Unix time or POSIX time) counts the number of seconds since January 1, 1970, 00:00:00 UTC. It is a widely used standard for representing time in programming and databases.
- Why are there 10-digit and 13-digit timestamps?
- 10-digit timestamps represent seconds since epoch, while 13-digit timestamps represent milliseconds. JavaScript's Date.now() returns milliseconds, while many server-side languages and APIs use seconds.
- How does DST detection work?
- The tool compares the UTC offset of January (winter) and July (summer) for each timezone. If the offsets differ, the timezone observes DST. It then checks the current offset to determine if DST is currently active.
- Can I use this tool offline?
- Yes. Once the page has loaded, all conversions work without an internet connection because everything runs locally in your browser.