Time Zone Converter — World Clock Free
Convert time between different time zones instantly. Compare multiple zones at once. Free online world clock and converter.
Current time in selected zones
Source Time Zone
Target Time Zones
Converted Times
Time Zone Converter — World Clock & Meeting Planner
Convert times between any of the world's time zones instantly. Whether you're scheduling international meetings or coordinating with remote teams, our timezone converter handles daylight saving time transitions automatically so you never miss a call.
The converter supports all IANA time zones including UTC offsets, city-based zones like America/New_York, and common abbreviations. It automatically adjusts for DST changes, showing you the exact local time at any location worldwide.
Planning across multiple time zones is one of the most error-prone tasks in remote work. A single miscalculation can mean a missed deadline or an empty meeting room. This tool eliminates guesswork by computing conversions using the official tz database.
Use the converter alongside our Meeting Cost Calculator to understand both the timing and financial impact of your international meetings. For recurring meetings, bookmark your most-used zone pairs for quick reference.
For developers working with international systems, store all timestamps in UTC and convert to local time only for display. Our Timestamp Converter complements this tool by handling Unix epoch conversions, while the Meeting Cost Calculator helps quantify the financial impact of scheduling across time zones.
How the Timezone Converter Works
- Select your source timezone from the dropdown or let it auto-detect your local zone
- Enter the date and time you want to convert
- Select one or more target timezones
- View the converted times instantly — DST adjustments are applied automatically
Understanding Time Zones and DST
The world is divided into 24 primary time zones, each roughly 15 degrees of longitude wide. However, political boundaries mean many countries use offsets that don't align with geographic zones. Daylight Saving Time further complicates matters — not all countries observe it, and those that do switch on different dates. The IANA timezone database (tzdata) tracks all these rules and is updated several times per year to reflect political decisions about timekeeping.
When to Use a Timezone Converter
Use a timezone converter whenever you schedule meetings with international colleagues, plan travel across time zones, coordinate software deployments across global servers, or need to interpret timestamps in logs from different regions. It is especially important during DST transition periods (March/April and October/November in most countries) when offsets temporarily change.
Common Use Cases
- •Schedule team standups that work for colleagues in New York, London, and Tokyo
- •Plan flight itineraries where departure and arrival times are in different zones
- •Coordinate software release windows across US, European, and Asian data centers
- •Calculate the best time for a meeting with our Meeting Cost Calculator Meeting Cost Calculator — Live Timer
- •Convert server log timestamps from UTC to your local time for debugging
Expert Tips
- ✱Always specify the timezone explicitly — 'EST' and 'ET' are not the same during summer months
- ✱When scheduling recurring meetings, check if any participant's timezone has a DST transition coming up
- ✱Use UTC for all internal system timestamps and only convert to local time for display
- ✱Remember that the International Date Line means converting from Asia to Americas often changes the date
Frequently Asked Questions
- Yes. The converter uses the IANA timezone database which includes all DST transition rules for every timezone. When you select a date and time, the correct offset is applied based on whether DST is active at that moment in that specific timezone.
- For practical purposes, UTC and GMT represent the same time. However, UTC is a precisely defined time standard based on atomic clocks, while GMT is a timezone historically based on solar time at the Royal Observatory in Greenwich. UTC never observes Daylight Saving Time.
- Countries like India (UTC+5:30), Nepal (UTC+5:45), and Iran (UTC+3:30) chose offsets that better align with their geographic position or distinguish themselves from neighbors. These non-standard offsets are fully supported by the converter.
Does the converter handle Daylight Saving Time automatically?▾
What is the difference between UTC and GMT?▾
Why do some timezones have half-hour or 45-minute offsets?▾
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