Ready to convert
Select timezones and click Convert// convert timezones instantly
Timezone Converter — instantly convert time between any two time zones. Browser-based, free, no sign-up required.
Ready to convert
Select timezones and click ConvertEnter the date and time you want to convert using the date picker.
Choose the timezone the input time belongs to.
Choose the timezone you want to convert to.
Get the converted time with UTC offset and time difference instantly.
Yes. The converter uses the browser's built-in Intl API which is fully DST-aware. It will automatically apply DST rules for any given date and timezone.
All timezones follow the IANA tz database format (e.g. America/New_York, Europe/London). This is the industry standard used by all major operating systems.
No. All conversion is done entirely in your browser using JavaScript's Intl API. No data is ever sent to any server.
Yes. UTC is available in the timezone list. Simply select UTC as your target timezone to convert any local time to Coordinated Universal Time.
The conversion is fully accurate down to the minute. It relies on the IANA timezone database maintained by your browser and operating system.
Yes. Click the ⇅ SWAP button to instantly swap the source and target timezones and reconvert the time.
The Timezone Converter by JLV DevTools lets you instantly convert any date and time from one timezone to another. Whether you're scheduling an international meeting, coordinating with a remote team, or planning travel across time zones, this tool gives you accurate results in seconds — no sign-up, no server, no hassle.
Every timezone in the world is defined relative to UTC (Coordinated Universal Time), with an offset measured in hours and minutes. For example, New York (EST) is UTC-5, while London (GMT) is UTC+0, and Tokyo (JST) is UTC+9. When converting between timezones, the tool calculates the total offset difference and applies it to the input time, accounting for Daylight Saving Time (DST) where applicable.
This tool uses IANA timezone identifiers — the global standard for naming time zones. Each identifier follows a Region/City format (e.g., America/Los_Angeles, Asia/Singapore). The IANA database is maintained continuously and is used by Linux, macOS, Android, and all major programming languages and frameworks.
Daylight Saving Time (DST) is observed in over 70 countries and shifts clocks forward by 1 hour during summer months. This converter is fully DST-aware — when you pick a date, it automatically applies the correct DST rules for that specific point in time for both the source and target timezone.
Unlike many online converters, this tool runs entirely in your browser. There is no backend, no tracking, and no data sent anywhere. It loads fast, works offline after the first load, and covers the full IANA timezone list including exotic regions and territories. The swap button makes it easy to reverse the conversion without re-entering your data.