Time Zone Converter
Use this free time zone converter to turn any local time into the matching time anywhere in the world. Pick a source city and a target city, enter a date and time, and the converter applies each zone's UTC offset and daylight saving rule to give you the exact corresponding time — instantly, with no sign-up.
Enter your numbers
Pick the From zone, enter the date and time there, and pick the To zone. Results update as you type.
Your results
Pick zones, a date and a time to convert.
How to use this calculator
Choose the city (or UTC) where the time is known in the From dropdown, then enter the date and time as shown on a clock there. Choose the destination city in the To dropdown. The converted time appears immediately — you can also press Calculate to recompute on demand.
The results panel shows the time in both zones plus the equivalent UTC time, each with its UTC offset and daylight saving status, so you can see exactly how the conversion was computed. If the converted time lands on a different calendar day, it says so ("+1 day" or "−1 day").
Two edge cases are flagged for you: a local time that doesn't exist because clocks spring forward (for example, 2:30 AM on the March clock-change Sunday in New York) gets an error, and an ambiguous time during the November fall-back hour is converted using the first (daylight time) occurrence and labeled as such.
How it works
Every zone in the dropdown stores two facts: its standard UTC offset (for example, New York is UTC−5) and a daylight saving rule. Two rules are coded directly into this page's JavaScript:
US rule — clocks spring forward on the second Sunday of March at 2:00 AM local standard time, and fall back on the first Sunday of November at 2:00 AM local daylight time. This applies to New York, Chicago, Denver, and Los Angeles.
EU rule — clocks spring forward on the last Sunday of March at 1:00 AM UTC, and fall back on the last Sunday of October at 1:00 AM UTC. This applies to London, Paris, and Berlin. All other zones use their standard offset year-round.
Conversion goes source local → UTC → target local. The page first figures out whether the source local time falls in daylight saving (using the zone's rule and transition dates computed in pure UTC arithmetic), subtracts the correct offset to reach UTC, then adds the target zone's correct offset for that UTC instant. Nothing depends on your device's timezone settings — the math is explicit calendar arithmetic, so every visitor gets identical results.
Limitations, stated plainly: this page models only the current US and EU daylight saving rules, applied to every year. Sydney and Auckland use Australian/New Zealand daylight saving schedules that are not modeled — they stay on standard time here. Historical rule changes (for example, pre-2007 US rules) and future law changes are not modeled either. Always double-check critical meetings, flights, or deadlines with an authoritative source.
Frequently asked questions
How does this converter handle daylight saving time?
Daylight saving is coded directly into the page: each zone stores its standard UTC offset plus a DST rule — US (clocks change the second Sunday of March and the first Sunday of November) or EU (last Sunday of March to last Sunday of October). The converter never relies on your browser's timezone database, so results are the same on any device.
Why doesn't Sydney or Auckland show daylight saving time?
This converter models the US and EU daylight saving rules only. Sydney and Auckland follow their own Southern Hemisphere schedules, which aren't coded here, so their offsets stay at standard time (UTC+10 and UTC+12). Double-check times for those cities against an official source during October–April.
Is it accurate for dates far in the past or future?
Not guaranteed. Governments change time zone and daylight saving rules, and this page only applies the current US and EU rules to every year. Historical quirks and future law changes aren't modeled — always double-check critical meetings, flights, or deadlines with an authoritative source.
What is the time difference between New York and Los Angeles?
Three hours, all year. Both cities switch their clocks on the same US schedule, so New York (ET) is always three hours ahead of Los Angeles (PT) — for example, 3:00 PM in New York is 12:00 PM in Los Angeles in both winter and summer. (Only the few hours while clocks actually change on spring-forward and fall-back Sundays can differ briefly.)