🕓 CST to PST Converter

What is the CST to PST Converter?

Converting Central Time to Pacific Time is simpler than most cross-country time zone math because both zones belong to the same country and follow the same daylight saving calendar. The continental United States shifts clocks forward on the second Sunday of March and back on the first Sunday of November, under rules set out in the Energy Policy Act of 2005, and every zone from Eastern to Pacific makes that same shift on the same day. Because Central Time and Pacific Time both move together, the gap between them never changes: Pacific is always 2 hours earlier than Central, in January and in July alike. That is a genuine difference from conversions involving a zone like India that does not observe daylight saving at all, where the gap between two places actually shifts across the year.

That said, a fixed hour gap is not the same as a fixed calendar date. Because Pacific Time is behind Central Time, any Central time before roughly 2:00 AM converts to a Pacific time on the previous calendar day. A meeting logged for 1:00 AM Central on a Tuesday actually lands at 11:00 PM Pacific on Monday night, and it is easy to miss that date shift if you only track the clock hour and not the day it falls on. Getting this right matters for anything with a hard deadline, a scheduled broadcast, or a calendar invite where the date field, not just the time field, needs to be correct.

Under the hood, this tool does not hardcode a simple "subtract 2 hours" rule, even though that is the correct answer, because doing the lookup properly also gets the zone abbreviation and the exact offset right for the date entered. It uses the Intl.DateTimeFormat API built into every modern browser, which draws on the IANA Time Zone Database, the same reference dataset operating systems, phones, and servers use to track time zone rules worldwide. The wall-clock numbers typed for Chicago are first treated as a rough UTC guess, the tool checks what offset America/Chicago actually observes at that instant (CST at UTC-06:00, or CDT at UTC-05:00), corrects the instant using that real offset, and then renders the corrected instant as Pacific local time using the America/Los_Angeles zone identifier, which resolves to PST at UTC-08:00 or PDT at UTC-07:00 on the matching dates.

This conversion comes up constantly for anyone coordinating across US time zones: a Chicago or Dallas based team scheduling a call with colleagues in Los Angeles or Seattle, a broadcaster or streamer converting an Eastern-published schedule that got quoted in Central Time into a West Coast air time, a support or operations team handing off a shift between a Central hub and a Pacific office, or a traveler double-checking what a Central Time flight or event listing means back home on the coast. Because the calculation runs entirely in your browser, nothing about the date, time, or purpose of your conversion is sent anywhere.

When to use it

• Scheduling a call or meeting between a Central Time office (Chicago, Dallas, Houston) and a Pacific Time office (Los Angeles, Seattle, San Francisco) without doing the math by hand.
• Converting a webinar, live stream, or product launch time listed in Central Time into the correct Pacific Time for West Coast attendees.
• Working out shift handoff times for support, operations, or on-call engineering teams split between Central and Pacific hubs.
• Double-checking a flight departure or arrival time, or a live TV broadcast time, that was quoted in Central Time against the local Pacific clock.

How to use the CST to PST Converter

1. Enter the date and time exactly as a clock in Chicago (America/Chicago) would show it.
2. Or click "Use current Central time" to fill in the present moment automatically.
3. Read the equivalent Pacific Time shown below, including whether each side is on standard time or daylight time and whether the date rolled back a day.
4. Use the Copy button to grab the converted Pacific Time result for a message, calendar invite, or note.

Formula & method

Worked examples

Central Time to Pacific Time hour gap, all year

Quick reference: common Central Time hours converted to Pacific Time

Common mistakes to avoid

• Assuming the gap changes with the seasons. Unlike conversions between a US zone and a non-DST country, Central and Pacific both observe US daylight saving on the same dates, so the gap is a flat 2 hours every day of the year. There is no separate "summer number" and "winter number" to remember here.
• Forgetting the date can roll back a day. Because Pacific Time is behind Central Time, any Central time in the first two hours after midnight lands on the previous calendar day in Pacific Time. Always confirm the resulting date, not just the clock hour, for anything scheduled late at night or early morning Central Time.
• Mislabeling CST or PST year-round. "CST" and "PST" specifically mean the standard-time (winter) versions of these zones. In summer the correct labels are CDT and PDT, even though many people say "CST" or "PST" out of habit regardless of the season.
• Confusing Central Time with Mountain or Eastern Time. Central Time sits one zone away from Mountain Time and two zones from Pacific Time. Double-check which US zone a schedule was actually published in before converting, since a 1 hour mixup with Mountain Time is a common source of missed meetings.

Glossary

CST

Central Standard Time, the US Central zone offset of UTC-06:00 used outside the daylight saving window.

CDT

Central Daylight Time, the US Central zone offset of UTC-05:00 used during the daylight saving window, roughly mid-March to early November.

PST

Pacific Standard Time, the US Pacific zone offset of UTC-08:00 used outside the daylight saving window.

PDT

Pacific Daylight Time, the US Pacific zone offset of UTC-07:00 used during the daylight saving window.

UTC

Coordinated Universal Time, the neutral global reference every time zone offset is measured against.

IANA time zone database

The standardized, regularly updated dataset of time zone rules and historical offsets that browsers and operating systems use to resolve zones like America/Chicago and America/Los_Angeles correctly.

Frequently asked questions