Timezone Converter

Our timezone converter makes it easy to check the current time around the world and convert any specific time between zones. The World Clock section at the top displays live, ticking clocks for every timezone you have selected. To add a new city, use the dropdown labeled "+ Add timezone" and choose from the list. Hover over any clock card and click the trash icon to remove it.

To convert a specific time, scroll to the Convert Specific Time section. Enter the time you want to convert, select the source timezone from the dropdown, and the tool will instantly show the equivalent time in every timezone visible in your World Clock. This is especially useful for scheduling international meetings, coordinating with remote teams, or planning travel across multiple time zones.

How Time Zones Work

The Earth rotates 360 degrees every 24 hours, which means each 15 degrees of longitude corresponds to a one-hour difference in solar time. In the late 19th century, standardized time zones were established so that regions sharing roughly the same longitude would observe the same clock time. Today, political and geographic boundaries mean that time zone borders do not always follow neat longitudinal lines, and some regions adopt half-hour or even quarter-hour offsets.

UTC Explained

Coordinated Universal Time (UTC) is the primary time standard by which the world regulates clocks. It replaced Greenwich Mean Time (GMT) as the international reference and is not subject to daylight saving adjustments. All other time zones are expressed as positive or negative offsets from UTC. For example, Eastern Standard Time (EST) is UTC-5, meaning it is five hours behind UTC, while Japan Standard Time (JST) is UTC+9.

Daylight Saving Time

Daylight Saving Time (DST) is the practice of advancing clocks by one hour during warmer months to extend evening daylight. Not all countries observe DST, and those that do may switch on different dates. In the United States, clocks spring forward on the second Sunday of March and fall back on the first Sunday of November. The European Union follows different transition dates, and countries near the equator typically do not observe DST at all. This means the time difference between two cities can change by an hour or more depending on the time of year.

Common Timezone Abbreviations

Timezone abbreviations can be confusing because some letters are shared. For instance, "CST" can refer to Central Standard Time in the United States (UTC-6) or China Standard Time (UTC+8). When scheduling across borders, it is safest to reference UTC offsets directly or use city-based identifiers such as "America/New_York" to avoid ambiguity.