Free Online Time Zone Converter
Convert times between world time zones
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About this tool
Convert times between any two time zones instantly with this free time zone converter. Select a source and target time zone, enter a date and time, and see the converted result with UTC offsets and DST indicators. The tool uses your browser's built-in Intl API for accurate conversions that automatically account for daylight saving time changes. Pre-fills with your current local time for immediate use. Whether you are scheduling a meeting across continents, coordinating with a remote team, or just checking what time it is in Tokyo, this converter handles it — no sign-up, no ads, no server calls. Supports over 40 major time zones worldwide.
How to use Time Zone Converter
- Select source zone. Choose or search for the time zone you are converting from.
- Enter time. Set the date and time to convert.
- Select target zone. Choose or search for the destination time zone.
- View result. See the converted time with UTC offsets and DST status.
Frequently Asked Questions
Yes. The converter uses your browser's built-in Intl.DateTimeFormat API which automatically accounts for DST transitions. The result will show whether DST is active in either zone.
There are 24 standard time zones based on UTC offsets, but in practice there are over 40 commonly used zones because some regions use half-hour or quarter-hour offsets (like India at UTC+5:30 or Nepal at UTC+5:45).
UTC (Coordinated Universal Time) is the primary time standard by which the world regulates clocks. It replaced GMT as the reference point. UTC does not observe daylight saving time.
Countries like India (UTC+5:30), Iran (UTC+3:30), and Nepal (UTC+5:45) chose offsets that better align with their solar noon. These are political decisions, not astronomical requirements.
In the US, clocks spring forward the second Sunday of March and fall back the first Sunday of November. Europe changes the last Sundays of March and October. Many countries near the equator don't observe DST at all.
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