Time Calculator
Calculate time differences, add or subtract time, convert between time zones, and find the number of days between 2 dates with our easy-to-use time calculators
Frequently Asked Questions
How do I convert between time zones?
To convert between time zones: 1. Select your source time zone from the dropdown 2. Enter the time you want to convert 3. Select the target time zone from the second dropdown 4. The calculator will instantly show the converted time For example, if it's 3:00 PM in New York (EST) and you want to know the time in Tokyo (JST), the calculator will show it's 5:00 AM the next day in Tokyo.
Why do some time zones have the same UTC offset but different names?
Time zones with the same UTC offset but different names typically represent different geographical regions that share the same offset from UTC. For example, both Eastern European Time (EET) and Israel Standard Time (IST) have a UTC+2 offset, but they represent different regions. Additionally, some regions may have different daylight saving time rules despite sharing the same standard time offset. Our calculator accounts for these differences and provides accurate conversions based on the specific time zone you select, not just the UTC offset.
How does daylight saving time affect time zone conversions?
Daylight saving time (DST) can complicate time zone conversions because: 1. Not all regions observe DST 2. Countries start and end DST on different dates 3. Some regions have abolished DST entirely Our time zone converter automatically accounts for DST when applicable, ensuring your conversions are accurate regardless of when DST begins or ends in either the source or target time zone. For example, the time difference between New York and London is 5 hours during standard time but only 4 hours when one region is observing DST and the other isn't.
What is UTC and why is it important for time calculations?
UTC (Coordinated Universal Time) is the primary time standard by which the world regulates clocks and time. It's crucial for: 1. International time coordination - UTC provides a consistent reference point for all time zones 2. Avoiding daylight saving time confusion - UTC doesn't change with seasons 3. Scientific and technical applications that require precise time synchronization All time zones are defined as offsets from UTC (e.g., Eastern Standard Time is UTC-5, meaning 5 hours behind UTC). Our calculators use UTC behind the scenes to ensure accurate time conversions and calculations regardless of daylight saving time or other regional time variations.