Timezone Converter
Convert any date and time from one timezone to multiple target timezones simultaneously. The timezone converter supports 80+ IANA timezones with automatic Daylight Saving Time handling — enter a date and time, select your source and target timezones, and see all converted times instantly. All conversions run locally in your browser with no signup required.
Convert any date and time from one timezone to multiple target timezones simultaneously. Supports 80+ IANA timezones with automatic DST handling. All conversions run locally in your browser with no signup required.
Source Date & Time
Convert To
Enter a date and time above
Enter a date and time above
Enter a date and time above
Uses the browser's built-in Intl API with IANA timezone database. DST transitions are handled automatically.
Why Use Our Timezone Converter?
Fast, accurate, and fully browser-based timezone conversion online
Instant Timezone Conversion
Convert any date and time to multiple target timezones simultaneously with no loading time. The timezone converter updates results instantly as you type — no submit button needed. Add as many target timezones as you need in one view.
Secure Timezone Converter Online
The timezone converter runs entirely in your browser using the built-in Intl API. Your dates, times, and timezone selections never leave your device — no server, no account, no tracking. Your scheduling data stays completely private.
Timezone Converter - No Installation
Use the timezone converter directly in any modern browser with no downloads, apps, or plugins required. DST transitions are handled automatically by the browser's IANA timezone database — always accurate, always up to date.
100% Free with 80+ Timezones
The timezone converter is completely free with no signup, no usage limits, and no ads. Convert between 80+ IANA timezones covering every major city and region worldwide — completely free forever.
Common Use Cases for Timezone Converter
Practical ways to use the timezone converter for scheduling and coordination
Scheduling International Meetings
Use the timezone converter to find the equivalent meeting time for participants in different countries. Add all participant timezones at once and see every local time side by side to find a slot that works for everyone.
Remote Work Coordination
Remote teams use the timezone converter to coordinate daily standups, deadlines, and handoffs across time zones. Convert your working hours to your colleagues' local times to avoid scheduling conflicts.
Flight and Travel Planning
Use the timezone converter to calculate arrival times, layover durations, and local times at your destination. Enter your departure time and convert it to the destination timezone to plan your itinerary accurately.
Live Event and Broadcast Times
Convert live event start times — sports matches, product launches, webinars, and concerts — to your local timezone. The timezone converter handles DST automatically so you never miss an event due to clock changes.
Software Deployment Windows
DevOps engineers use the timezone converter to plan maintenance windows and deployment schedules that minimise impact across global user bases. Convert your planned downtime to every affected region's local time.
Financial Market Hours
Traders and investors use the timezone converter to track market open and close times across exchanges in New York, London, Tokyo, Hong Kong, and Sydney. Convert market hours to your local timezone instantly.
Understanding the Timezone Converter
How the timezone converter works and how to use it effectively
What is a Timezone Converter?
A timezone converter is a tool that translates a specific date and time from one timezone to the equivalent moment in one or more other timezones. Timezones are defined by their offset from UTC (Coordinated Universal Time) and are identified by IANA timezone names such as America/New_York or Asia/Tokyo. Our timezone converteruses the browser's built-in Intl API with the IANA timezone database, which means Daylight Saving Time (DST) transitions are handled automatically and accurately for every timezone. You can convert one source time to multiple target timezones simultaneously, add or remove target timezones freely, and swap the source and target with one click. All conversions run entirely in your browser with no data sent to any server.
How Our Timezone Converter Works
- Set Your Source Date and Time:Enter the date and time you want to convert using the datetime picker, or click "Now" to use the current time. The timezone converter automatically detects your browser's local timezone and pre-selects it as the source timezone.
- Select Source and Target Timezones:Choose your source timezone from the dropdown — the timezone the input date and time is in. Then select one or more target timezones using the "Convert To" rows. Click "Add timezone" to add more targets. The timezone converter updates all results instantly as you change any input.
- Read Your Converted Times:Each target timezone row shows the converted date and time with the timezone abbreviation (e.g. EST, JST) and UTC offset. Use the "Swap with first" button to reverse the conversion direction.
What the Timezone Converter Shows
- Converted Date and Time: The full date and time in the target timezone, including weekday, month, day, year, hours, minutes, seconds, and AM/PM indicator.
- Timezone Abbreviation: The short timezone code for the target timezone at the specified date (e.g. EST, EDT, GMT, JST, IST). Note that abbreviations change with DST — EST becomes EDT in summer.
- UTC Offset: The UTC offset for the target timezone at the specified date (e.g. UTC−5:00, UTC+9:00). This accounts for DST automatically.
- Multi-Timezone View: All target timezones are shown simultaneously in a single view, making it easy to compare times across multiple regions without switching between conversions.
Understanding Daylight Saving Time (DST)
Daylight Saving Time (DST)is the practice of advancing clocks by one hour during summer months to extend evening daylight. Not all countries observe DST, and those that do change their clocks on different dates. The timezone converter handles DST automatically using the browser's IANA timezone database, which is updated regularly to reflect the latest DST rules for every timezone. This means that if you convert a date in July for New York, the converter correctly uses EDT (UTC−4:00) rather than EST (UTC−5:00), and vice versa for winter dates. Always use IANA timezone names (e.g. America/New_York) rather than abbreviations like EST or EDT, as abbreviations are ambiguous and do not encode DST information.
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Frequently Asked Questions About Timezone Converter
Common questions about the timezone converter and how it works
A timezone converter translates a specific date and time from one timezone to the equivalent moment in other timezones. Our timezone converter uses the browser's built-in Intl API with the IANA timezone database, handles DST automatically, and lets you convert to multiple timezones simultaneously — no signup required.
Yes. The timezone converter uses the browser's IANA timezone database, which includes all DST rules for every timezone. DST transitions are handled automatically — if you convert a summer date for New York, the converter correctly uses EDT (UTC−4:00), and for winter dates it uses EST (UTC−5:00). No manual adjustment is needed.
Absolutely. The timezone converter runs entirely in your browser. Your dates, times, and timezone selections are never sent to any server, stored in a database, or tracked. Everything stays completely private on your device.
Yes — the timezone converter is 100% free with no signup, no account, and no usage limits. Convert between as many timezones as you need, completely free forever with no ads.
You can add as many target timezones as you need by clicking the "Add timezone" button. Each row shows the converted time independently. There is no limit on the number of target timezones you can add.
The timezone converter uses IANA timezone names (e.g. America/New_York, Asia/Tokyo) which are the international standard for timezone identification. These names encode both the base UTC offset and all DST rules, making them unambiguous unlike abbreviations such as EST or IST which can refer to multiple timezones.
Timezone abbreviations change with DST. For example, America/New_York uses EST (UTC−5:00) in winter and EDT (UTC−4:00) in summer. The timezone converter shows the correct abbreviation for the specific date you entered, so you can see exactly which offset applies.
Yes. The timezone converter works for any date you enter — past, present, or future. Historical DST rules are preserved in the IANA database, so conversions for past dates use the rules that were in effect at that time. Future dates use the currently scheduled DST rules.
The "Swap with first" button exchanges the source timezone with the first target timezone. This lets you quickly reverse a conversion — for example, if you converted from New York to Tokyo, clicking swap converts from Tokyo to New York using the same date and time.