World Time & Timezone Converter
Compare world time zones and time differences online. Find the best international meeting time and add it directly to Google Calendar.
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What is the World Time Calculator?
The World Time Calculator is an online web tool that lets you check current times and time differences of cities worldwide directly in your browser. Accurately convert and compare opening hours for major global stock markets including US Markets with automatic Daylight Saving Time DST Japan Nikkei and Hong Kong Hang Seng all based on your local time.
Key Features
- Automatic DST calculation for US and global stock market hours
- Instantly convert major timezones like EST / PST to your local time
- Full support for over 100 major global cities and countries
- 100% compatible with mobile browsers with no app installation
- Intuitive dashboard UI to compare 2 or more cities simultaneously
- Zero-lag screen transitions with a highly optimized visual engine
Use Cases
- US Stock Nasdaq NYSE Investors: Confidently check exact pre-market open and close times reflecting automatic DST against your local time.
- Korean Stock KOSPI KOSDAQ Trading: Expats trading Korean stocks can accurately match the 9 AM KST opening and closing auction times to their local timezone.
- Asian Markets Nikkei Hang Seng: Visually confirm the exact opening and lunch break hours of major Asian indices down to the minute.
- European Markets UK Germany France: Quickly calculate timezone differences for European open hours to gauge global money flow before the US market opens.
- Video Conferences EST Conversion: Safely schedule Zoom meetings requiring EST PST translations with overseas clients.
- Overseas Travel Flight Times: Pre-calculate local arrival times and adapt to jet lag for trips to cities like Bangkok Tokyo or New York.
- Global Online Shopping: Perfectly time local major discount launches like Black Friday to your local clock.
- Contacting Expats or Family: Check the best morning and night time window to call family members in distant countries safely.
How to Use
- From the list or top search bar click your base city like Seoul.
- Select a second city you want to compare time differences with like New York for stocks or travel.
- Click the activated 'Compare' button at the bottom of the screen.
- Move to the detail page to visually confirm DST status and fluid day/night progress.
