Free Timezone Converter

About the Timezone Converter

Our free timezone converter helps you instantly translate times between any two time zones worldwide. Whether you are scheduling a video call with colleagues in Tokyo, planning a webinar for an audience spread across North America and Europe, or figuring out when your favourite live stream starts in your local time, this tool handles the conversion with daylight saving time adjustments applied automatically.

How Time Zones Work

The Earth is divided into 24 primary time zones, each roughly 15 degrees of longitude wide. The baseline is Coordinated Universal Time (UTC), formerly known as Greenwich Mean Time (GMT). Zones east of the Prime Meridian are ahead of UTC (positive offsets like UTC+5:30 for India), while zones to the west are behind (negative offsets like UTC-5 for US Eastern). However, many regions observe daylight saving time (DST), shifting their clocks forward by one hour during summer months. This means the offset between two cities can change throughout the year — our converter accounts for this by using the IANA timezone database built into modern browsers.

Key Features

• 400+ time zones — every IANA timezone identifier from America/New_York to Asia/Kolkata to Pacific/Auckland
• Automatic DST handling — conversions adjust for daylight saving based on the date you select
• Date-aware — see when a conversion crosses a day boundary (tomorrow/yesterday indicators)
• Quick reference panel — view your local time converted to popular zones at a glance
• Live world clocks — current time in major cities updates every second
• Swap button — instantly reverse your from/to zones for return journey planning
• No sign-up — use it immediately, no accounts or email required

Common Use Cases

Remote work and meetings: Distributed teams need to find overlapping work hours. If your team spans San Francisco (PST), London (GMT/BST), and Singapore (SGT), you can use this tool to find a window that works for everyone. Enter your proposed meeting time in one zone and see what it translates to in each colleague's local time.

Travel planning: Before flying internationally, check what time you will land in the destination's local time. Account for layovers by converting connection times. Plan your sleep schedule for jet lag management by knowing exactly how many hours ahead or behind your destination is.

Live events and broadcasts: Sports events, product launches, live streams, and conferences are often announced in a single time zone. Convert the start time to your local zone so you never miss the opening kickoff, keynote, or episode premiere.

Financial markets: Stock exchanges around the world open and close at different times. Traders and investors use timezone converters to track when the NYSE, LSE, TSE, or ASX opens relative to their own trading hours.

Understanding UTC Offsets

UTC offsets range from UTC-12 (Baker Island) to UTC+14 (Line Islands, Kiribati). Most offsets are whole hours, but some regions use half-hour or even 45-minute offsets. India uses UTC+5:30, Nepal uses UTC+5:45, and the Chatham Islands in New Zealand use UTC+12:45. Our converter handles all of these non-standard offsets correctly because it uses the full IANA timezone database rather than simplified hour-based approximations.

Daylight Saving Time Explained

Approximately 70 countries observe some form of daylight saving time, though the exact dates of transition vary. In North America, DST runs from the second Sunday in March to the first Sunday in November. In most of Europe, it runs from the last Sunday in March to the last Sunday in October. Southern hemisphere countries that observe DST (like Australia and parts of South America) do so during their summer, which is the northern hemisphere's winter. This means the time difference between, say, London and Sydney changes four times per year as each city enters and exits DST on different dates.

Tips for Scheduling Across Zones

When coordinating with people in multiple time zones, always specify the timezone abbreviation alongside the time. Instead of saying "let us meet at 3pm", say "3pm EST (8pm GMT, 1:30am IST next day)". Use our converter to verify these before sending calendar invites. Most calendar applications handle timezone conversion, but it helps to double-check — especially around DST transition weekends when errors are most common.

Looking for more time-related tools? Check out our World Clock for live multi-city time displays, or our Epoch Converter for Unix timestamp conversions. For unit conversions beyond time, browse our full converter directory.