--:--:--
—
San Juan · Barbados · Halifax (winter)
For international scheduling, try the timezone meeting planner.
Difference
PST vs AST
UTC → UTC
--:--:--
—
Los Angeles · Seattle · Vancouver
AST to PST converter
Convert AST to PST time now
Free AST to PST converter. See Atlantic Standard Time and Pacific Standard Time side by side. Live clocks, a 4 hours gap, meeting hours, and a full-day chart for San Juan and Los Angeles.
America/Puerto_Rico
—
AST → PST
To · Pacific Standard Time
—
America/Los_Angeles
Interactive diagram
Watch AST convert into PST
Drag the Atlantic hour. Watch the Pacific clock change.
Atlantic
9:00 AM AST
—
PST ← AST
Pacific
—
Full-day chart
AST to PST hourly conversion chart
Full-day table. Tap a row to copy. Labels follow daylight saving.
| Atlantic | Pacific | UTC offsets |
|---|
Meeting times
Best AST to PST meeting window
Find hours that work on both sides. Then save the slot to your calendar.
Follow along
Step-by-step AST to PST conversion
Four short steps to convert any AST time to PST.
Choose AST time
Select any hour in Atlantic Standard Time. Smart mode uses America/Puerto_Rico.
AST to PST conversion guide
AST to PST conversion guide
This AST to PST converter shows Pacific Standard Time (UTC−8) for any Atlantic Standard Time (UTC−4) time. Use it to schedule between San Juan and Los Angeles. Choose Smart DST for live city clocks. Choose Fixed mode when you only want the AST and PST labels.
Atlantic
AST
UTC−4
San Juan · Barbados · Halifax (winter)
AST vs PST—
Pacific
PST
UTC−8
Los Angeles · Seattle · Vancouver
What is AST to PST conversion?
AST to PST conversion turns a AST clock into the matching PST time. Use it for calls, travel, and teams in San Juan and Los Angeles.
AST to PST time difference
PST is 4 hours behind AST. Subtract 4 hours from the AST time to get PST. The live clocks at the top show the current AST to PST gap.
AST vs PST
AST is UTC−4. PST is UTC−8. They are different names. If a region uses daylight saving, check the live labels.
AST to PST now / current time
Need ast to pst right now? Read the live clocks, or tap Use current time for an instant AST → PST result.
AST to PST time difference
Season / context — tap to explore
See how daylight saving can change this pair.
Atlantic—
—AST → PST
Pacific—
Quick answers
Atlantic
Atlantic Standard Time (AST)
UTC−4
Atlantic Standard Time (AST) is UTC−4. Smart DST uses the city clock America/Puerto_Rico so daylight saving stays correct for San Juan · Barbados · Halifax (winter).
- Cities: San Juan · Barbados · Halifax (winter)
- City clock: America/Puerto_Rico
- Fixed AST: UTC−4
- On this page it pairs with PST (UTC−8)
Pacific
Pacific Standard Time (PST)
UTC−8
Pacific Standard Time (PST) is UTC−8. Smart DST uses America/Los_Angeles for cities such as Los Angeles · Seattle · Vancouver.
- Cities: Los Angeles · Seattle · Vancouver
- City clock: America/Los_Angeles
- Fixed PST: UTC−8
- From AST: PST is 4 hours behind AST
AST to PST FAQ