DST-aware time zone converter and world clock. Search 120+ cities or any IANA zone, scrub through the day, see working-hour overlap, upcoming DST changes, and send the time to Google Calendar or .ics.
Using this tool in an article, lesson or report? Copy a ready-made link or citation.
HTML link
<a href="https://www.toolnova.org/utilities/time-zone-converter">Time Zone Converter</a> by ToolNova
APA
ToolNova. (2026, October 5). Time Zone Converter [Online tool]. https://www.toolnova.org/utilities/time-zone-converter
MLA
“Time Zone Converter.” ToolNova, 5 Oct. 2026, www.toolnova.org/utilities/time-zone-converter.
Find the real overlap between time zones
Add the cities you work with to see their local time side by side, with day labels, UTC offsets and how far ahead or behind each one is. Pick any date and time or drag the slider, find hours when everyone is at work, and share the time as a link, text or calendar invite.
Pick a source and target zone and see the converted time immediately, with daylight-saving handled for you, the part manual math gets wrong twice a year. It's made for scheduling a call across continents, catching a live stream, or working out when a deadline actually lands in your own day.
Features
Live world clock with seconds and day/night status
Search 120+ cities, every IANA zone, or abbreviations like EST, PKT
Pick any date and time; DST and half-hour zones handled
24-hour overlap grid with working hours you set
Upcoming daylight-saving changes for each city
Copy times, Google Calendar link and .ics invite
12h / 24h, reorder cities, set a base city, shareable link
How to use Time Zone Converter
1
Add cities
Search by city, country, zone or abbreviation, or tap a popular city.
2
Set the time
Leave it live, or choose a date and time in your base city, or drag the slider.
3
Find overlap
Use the hour grid to spot hours when everyone is in working hours.
4
Share it
Copy the times, open a Google Calendar event or download an .ics invite.
Common use cases
Scheduling a call that works across several countries at once
Checking what time a launch, stream, or deadline lands in your day
Planning travel arrivals and beating jet lag
Coordinating a distributed remote team's working hours
Converting PST/EST/GMT/IST between each other during DST weeks
Comparing world clocks live on a single dashboard
Calculating the time difference between two cities
Finding overlapping working hours for international teams
Checking UTC time against local time in another city
Comparing multiple time zones before scheduling an international meeting
Detailed guide
Plan meetings without the guesswork
Because DST shifts are applied automatically, a 3 PM London slot resolves to the correct local time in New York, Dubai, or Sydney even during the weeks the offsets change. Convert once and share a time everyone reads correctly, instead of a UTC offset people have to decode.
Compare Time Zones and Calculate the Time Difference
Compare two or more cities to see their local times, UTC offsets, and the difference between them at a specific date and time. The difference between time zones is not always fixed because some regions observe daylight saving time while others do not, and countries can change their clocks on different dates. The converter applies the relevant time-zone rules so you can check the actual difference instead of relying on a fixed offset.
World Clock: See the Current Time in Multiple Cities
Use the converter as a live world clock by adding the cities you want to monitor. Each city shows its current local time, UTC offset, hour difference from your base location, and a day or night indicator. This makes it easy to compare time around the world when working with international teams, checking a location before calling someone, or following an event in another country.
Find the Best Meeting Time Across Time Zones
For international meetings, add the locations of everyone who needs to join and compare their working hours on the meeting planner. The 24-hour view makes it easier to find a time that falls within reasonable hours for the largest number of participants. Because the calculations account for daylight saving changes, the best meeting window can be checked for the specific date instead of relying on a time difference that may change during the year.
Find Overlapping Working Hours Across Time Zones
When people work from different countries, the useful meeting window is the period when their working hours overlap. The meeting planner displays the day across all selected time zones and highlights typical working hours, making the overlap easier to spot. This is useful for distributed teams, international clients, remote companies, and anyone trying to schedule a call without placing it unnecessarily early or late for another location.
Convert UTC and Local Time
UTC provides a common reference for comparing times around the world, but people usually need the result in a local city or time zone. Select a city and enter a UTC-based time to see the corresponding local time, or use a local city as the base and compare it with UTC. The converter uses the selected time zone's rules rather than treating every location as a permanently fixed UTC offset.
Common conversions: PST, EST, GMT, IST and more
The pairs people convert most follow simple offsets when there's no DST in play: EST is 3 hours ahead of PST, GMT/UTC is 5 hours ahead of EST, and IST (India) is 5.5 hours ahead of GMT, so it's 10.5 hours ahead of EST. Because several of these zones observe daylight saving on different dates, the gap between them isn't fixed year-round, which is exactly why manual math slips twice a year. Add both cities here and the converter reads the live IANA rules and shows the correct current difference, whichever side has switched.
Frequently asked questions
Does the converter handle daylight saving time?
Yes. Offsets come from your browser's time-zone database for the exact date you choose, and each city shows its next clock change.
Can I search by time zone abbreviation?
Yes. Type an abbreviation such as EST, CET or PKT to find matching zones, or type the IANA name like Asia/Karachi.
How do I send a meeting time to others?
Use Copy times for a text list, the Google Calendar button, the .ics file for Outlook and Apple Calendar, or copy a link that opens the same time.
How do I convert time between time zones?
Select your source time zone, enter the time, then select your target time zone. The tool instantly shows the equivalent time, including automatic daylight saving time adjustments.
How do I calculate the time difference between two cities?
Select the two cities you want to compare and enter the date and time you are interested in. The converter shows each local time, UTC offset, and hour difference. The result is calculated for the selected date so daylight saving changes are taken into account.
What is UTC and why is it used?
UTC (Coordinated Universal Time) is the primary time standard used globally. It doesn't change for daylight saving. All time zones are expressed as UTC+ or UTC- offsets. New York is UTC-5 (EST) or UTC-4 (EDT).
How do I convert UTC to local time?
Select the city or time zone you want to convert to, then compare it with UTC at the date and time you need. The converter applies the selected location's current time-zone rules, including daylight saving when applicable.
How can I see the current time in multiple cities?
Use live mode and add the cities you want to monitor. Each city displays its current local time, UTC offset, hour difference from your base location, and a day or night indicator.
How do I find the best meeting time for a global team?
Use the meeting planner: enter times during business hours in your time zone and see what time it is for team members in other zones. Aim for overlap in standard business hours (9am-5pm) for all participants.
How do I find overlapping working hours across time zones?
Add the cities or time zones for everyone involved and use the meeting planner to compare their working hours. Look for a period where the selected locations overlap during reasonable working hours.
How does daylight saving time affect time zone conversions?
Daylight Saving Time (DST) shifts the clock forward 1 hour in spring and back in fall. Not all countries observe DST, and they change on different dates. This tool automatically accounts for current DST status in each time zone.
What time zones does the US have?
The contiguous US has 4 time zones: Eastern (ET, UTC-5/4), Central (CT, UTC-6/5), Mountain (MT, UTC-7/6), and Pacific (PT, UTC-8/7). Hawaii is UTC-10, Alaska is UTC-9. Numbers in parentheses show Standard/Daylight Saving Time offsets.
What is the difference between a time zone and a UTC offset?
A UTC offset is a fixed number like +5:30 (India) or -8:00 (Pacific). A time zone is a named region (e.g., 'America/New_York') that may have multiple UTC offsets throughout the year due to daylight saving. Time zones are always preferred over raw offsets for scheduling because they handle DST automatically.
What time will a meeting be in other time zones?
Enter a time and add each participant's city; the converter shows the equivalent local time everywhere at once, and it accounts for daylight saving so the times stay accurate.
What is the best time to schedule a call across time zones?
Add every location and the tool highlights the hours that fall within working hours for everyone, so you can pick a slot that is reasonable for all participants.
How do I convert EST to PST or to GMT/UTC?
Pick the source and target zones (for example EST to PST is -3 hours, EST to UTC is +5 hours in winter) and enter the time; the converter handles the offset and daylight saving automatically.
Does it handle daylight saving time?
Yes: DST transitions are applied automatically for each zone, so conversions stay accurate year-round.
What is UTC?
Coordinated Universal Time is the global reference from which all time zones are offset, used as a neutral baseline for scheduling.
