LazyDevKit
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Time Converter

Convert Unix timestamps and date strings between source and target time zones, view common formats, and adjust days, hours, minutes, or seconds.

Input and Time Zones

Unix timestamp in seconds.Unix timestamp in milliseconds.Dash-separated date string: YYYY-MM-DD HH:mm:ss.Slash-separated date string: YYYY/MM/DD HH:mm:ss.
Conversion Results
Timestamps
Unix timestamp (seconds)
1779006474
Unix timestamp (milliseconds)
1779006474000
Standard Formats
ISO 8601
2026-05-17T08:27:54.000Z
UTC time
2026-05-17 08:27:54
RFC 2822
Sun, 17 May 2026 08:27:54 GMT
Time Zone Times
Source time
2026-05-17 08:27:54 (GMT+00:00, GMT+00:00)
Target time
2026-05-17 08:27:54 (GMT+00:00, GMT+00:00)
Date & Time
SQL datetime
2026-05-17 08:27:54
Slash datetime
2026/05/17 08:27:54
Date
2026-05-17
Time
08:27:54
Weekday
Sunday
Time Zone Info
Source time zone
UTC (GMT+00:00, GMT+00:00)
Target time zone
UTC (GMT+00:00, GMT+00:00)

Processing Notes

  • All time conversion runs locally in your browser.
  • Date strings without a time zone are parsed in the source time zone, which defaults to your browser time zone.
  • GMT+8 / GMT-4 are fixed offsets; IANA zones such as America/New_York follow daylight saving rules.
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What this tool does

Paste a timestamp or date string, choose source and target time zones, then view Unix seconds, milliseconds, ISO, UTC, SQL datetime, date, time, weekday, and time zone details.

Supported formats

Input supports Unix timestamp seconds or milliseconds, YYYY-MM-DD HH:mm:ss, YYYY/MM/DD HH:mm:ss, and ISO 8601. Time zones support IANA names such as Asia/Taipei and America/New_York, plus fixed offsets such as GMT+8 and GMT-4.

Local browser processing

All parsing, time zone conversion, and time adjustment run locally in your browser. Your input is not uploaded to a server.

How to use

Enter a Unix timestamp, date string, or ISO 8601 time.

Set the source time zone. Date strings without an explicit time zone use your browser time zone by default.

Set the target time zone to convert the timestamp.

Copy common output formats from the results, or download the full conversion output.

FAQ

How are date strings without a time zone parsed?

They use your browser time zone by default, but you can change the source time zone to Asia/Taipei, GMT+8, or another supported zone.

Is GMT-4 the same as America/New_York?

Not exactly. GMT-4 is a fixed offset. America/New_York is an IANA time zone and follows daylight saving rules for the selected date.

Which timestamps are supported?

Unix timestamp seconds and milliseconds are supported, and the tool detects the unit by digit length.

Is my data uploaded?

No. The tool uses browser Date and Intl APIs to convert everything locally.

Can I copy individual results?

Yes. Each result row has its own copy button so you can copy only the timestamp or formatted date you need.