Date & time tool

Time Zone Converter

This time zone converter, also called a time zone calculator, changes a time from one zone into another in a tap. Set the date and time, pick the zone it's in and the zone you want, and you'll see the converted time, the date there, and a day or night read. It uses your browser's built-in zone data, so daylight saving is handled for you, and a world clock shows the moment across major cities. It's free, private, and perfect for scheduling calls and travel.

  • Any two zones
  • Daylight saving aware
  • Shows the date
  • World clock
  • Uses your zone

Last updated July 25, 2026 Daylight saving handled Built and maintained by Muhammad Younus

Converted time
3:00 PM New York

The date and time are read in the from zone. Daylight saving is applied automatically for the date you pick.

That moment around the world

Quick answer

How do you calculate the time zone difference?

The time zone difference is the gap between each zone's UTC offset. To convert a time, find both offsets and apply that gap. New York sits at UTC minus 5 in winter and Los Angeles at UTC minus 8, so New York is 3 hours ahead, which makes 3 pm in New York the same as 12 pm in Los Angeles. When either zone is on daylight saving time, the gap can shift by an hour, so the difference is tied to the date, not a fixed number. The converter above reads the real date and works out the exact offset for you.

The basics

How does converting time zones work?

Every time zone is an offset from UTC, the global reference clock, so converting between two zones means going through that shared moment. This tool takes the date and time you enter, reads it as the wall clock in your from zone, and works out the exact UTC instant it points to. Then it shows that same instant as the clock reads in your to zone. Because it applies the daylight saving rule that truly holds on that date, a July conversion and a January one between the same cities can differ by an hour. It also tracks the date, since far-apart zones can sit on different days at the same moment, so you'll never schedule a call a day early by mistake.

from zone → UTC moment → to zone
Step by step

Converting a time, step by step

Here's the quick routine for scheduling across zones:

  1. 1

    Set the timeEnter the date and time, or tap use right now.

  2. 2

    Pick the from zoneChoose the zone that time is in, often yours.

  3. 3

    Pick the to zoneChoose where you want it; tap swap to flip them.

  4. 4

    Read and planYou'll see the converted time, date, and world clock.

Quick reference

Standard UTC offsets

A few major zones and their standard-time offset from UTC. Daylight saving shifts many of these by an hour in summer.

CityStandard offset
Los AngelesUTC minus 8
New YorkUTC minus 5
LondonUTC plus 0
DubaiUTC plus 4
TokyoUTC plus 9
SydneyUTC plus 10
Common conversions

Quick time zone conversions

Here are the differences people look up most. These use standard time, so during daylight saving the gap shifts by an hour, which is exactly why the converter above checks the real date for you rather than trusting a fixed number.

ConversionDifferenceExample
EST to PSTSubtract 3 hours3 pm in New York is 12 pm in Los Angeles
EST to CSTSubtract 1 hour3 pm in New York is 2 pm in Chicago
EST to MSTSubtract 2 hours3 pm in New York is 1 pm in Denver
EST to GMTAdd 5 hours3 pm in New York is 8 pm in London
PST to ESTAdd 3 hours9 am in Los Angeles is 12 pm in New York
EST to ISTAdd 10.5 hours3 pm in New York is 1:30 am next day in India
GMT to JSTAdd 9 hours9 am in London is 6 pm in Tokyo
Plan it right

How to schedule a meeting across time zones

When a call spans several zones, the trick is to find the overlap where everyone's awake. Convert your proposed time into each person's zone first, and aim for a slot that lands in normal working hours for all of them. With the US and Europe, late morning Eastern usually works, since it's afternoon in London and still the workday on the West Coast. Stretch to Asia or Australia and there's often no comfortable overlap, so you'll take turns hosting the awkward hour.

Two habits save a lot of confusion. Always name the zone when you write a time, so "2 pm ET" rather than just "2 pm", and double-check the date, because a 9 pm call in New York is already the next morning in Tokyo. Daylight saving is the other trap: the US, Europe, and Australia switch on different weekends, so a fixed gap can drift for a few weeks each year. The converter above reads the actual date and applies the right rule, which beats doing it in your head. For the length of the call itself, the time calculator adds and subtracts hours, and the date calculator handles the day math.

FAQ

Frequently asked questions

You set a date and time, choose the zone it's in, and choose the zone you want it in. The tool turns your entry into a single moment in time, then shows that same moment as the local clock reads in the target zone, with the date and a day or night marker. It handles daylight saving automatically from the zone rules already on your device, so you never do the offset math. Everything runs on your device, so you'll see the result update the instant you change anything.

Yes, that's the tricky part it takes off your hands. Each zone springs forward and falls back on its own schedule, so a fixed offset is not enough. The converter reads the actual rules for the date you pick, so a summer conversion and a winter conversion between the same two cities can differ by an hour, and you'll always get the offset that truly applies on that date.

Because zones far apart can sit on different calendar days at the same moment. When it's late evening in New York, it's already the next morning in Tokyo, so the converter shows the correct date in the target zone, not just the time. That's why it always displays the full date alongside the clock, so a call or meeting never lands on the wrong day by accident.

UTC is the global reference clock that every zone is measured against, with no daylight saving of its own. Your zone is UTC plus or minus a number of hours, like UTC minus 5 for New York in winter. The converter works by translating your time to that shared UTC moment first, then back out to the target zone, which is what keeps conversions consistent across any pair of cities.

Yes, below the main result the world clock shows your chosen moment across a set of major cities at a glance, so you can plan a call that works for everyone. It updates with the moment you set, so you'll see how a 3 pm meeting in one city lands for colleagues elsewhere. It's a quick way to find a slot that isn't the middle of someone's night.

The four main US zones sit one hour apart in standard time: Eastern is one hour ahead of Central, two ahead of Mountain, and three ahead of Pacific. So 3 pm Eastern is 2 pm Central, 1 pm Mountain, and 12 pm Pacific. In summer most of these zones move to daylight time together, so the one-hour steps hold, but Arizona mostly stays on Mountain standard time year round, which is the kind of edge case the converter above checks for you by reading the real date.

The result here reads in 12-hour AM and PM style, since that's how most US schedules are written. To think in 24-hour terms, 1 pm is 13:00, 6 pm is 18:00, and midnight is 00:00. If you work in 24-hour time often, the military time converter switches any time between the two formats, and it pairs well with this tool when you're logging a converted time in a 24-hour system.

Yes, it's completely free, with no sign-up and no limit. It runs entirely in your browser using built-in time zone data, so it's fast and private, and nothing you enter is sent anywhere. Bookmark it for scheduling calls, booking travel, catching a live stream, or coordinating across a remote team, and you'll have an accurate conversion, daylight saving included, in a second.

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