--:--:--
—
New York · Toronto · Miami
Find the best shared slot in the time and meeting planner.
Difference
AST vs EST
UTC → UTC
--:--:--
—
San Juan · Barbados · Halifax (winter)
EST to AST converter
Convert EST to AST time now
Free EST to AST converter. See Eastern Standard Time and Atlantic Standard Time side by side. Live clocks, a 1 hour gap, meeting hours, and a full-day chart for New York and San Juan.
America/New_York
—
EST → AST
To · Atlantic Standard Time
—
America/Puerto_Rico
Interactive diagram
Watch EST convert into AST
Drag the Eastern hour. Watch the Atlantic clock change.
Eastern
9:00 AM EST
—
AST ← EST
Atlantic
—
Full-day chart
EST to AST hourly conversion chart
Full-day table. Tap a row to copy. Labels follow daylight saving.
| Eastern | Atlantic | UTC offsets |
|---|
Meeting times
Best EST to AST meeting window
Find hours that work on both sides. Then save the slot to your calendar.
Follow along
Step-by-step EST to AST conversion
Four short steps to convert any EST time to AST.
Choose EST time
Select any hour in Eastern Standard Time. Smart mode uses America/New_York.
EST to AST conversion guide
EST to AST conversion guide
This EST to AST converter shows Atlantic Standard Time (UTC−4) for any Eastern Standard Time (UTC−5) time. Use it to schedule between New York and San Juan. Choose Smart DST for live city clocks. Choose Fixed mode when you only want the EST and AST labels.
Eastern
EST
UTC−5
New York · Toronto · Miami
EST vs AST—
Atlantic
AST
UTC−4
San Juan · Barbados · Halifax (winter)
What is EST to AST conversion?
EST to AST conversion turns a EST clock into the matching AST time. Use it for calls, travel, and teams in New York and San Juan.
EST to AST time difference
AST is 1 hour ahead of EST. Add 1 hour to the EST time to get AST. The live clocks at the top show the current EST to AST gap.
EST vs AST
EST is UTC−5. AST is UTC−4. They are different names. If a region uses daylight saving, check the live labels.
EST to AST now / current time
Need est to ast right now? Read the live clocks, or tap Use current time for an instant EST → AST result.
EST to AST time difference
Season / context — tap to explore
See how daylight saving can change this pair.
Eastern—
—EST → AST
Atlantic—
Quick answers
Eastern
Eastern Standard Time (EST)
UTC−5
Eastern Standard Time (EST) is UTC−5. Smart DST uses the city clock America/New_York so daylight saving stays correct for New York · Toronto · Miami.
- Cities: New York · Toronto · Miami
- City clock: America/New_York
- Fixed EST: UTC−5
- On this page it pairs with AST (UTC−4)
Atlantic
Atlantic Standard Time (AST)
UTC−4
Atlantic Standard Time (AST) is UTC−4. Smart DST uses America/Puerto_Rico for cities such as San Juan · Barbados · Halifax (winter).
- Cities: San Juan · Barbados · Halifax (winter)
- City clock: America/Puerto_Rico
- Fixed AST: UTC−4
- From EST: AST is 1 hour ahead of EST
EST to AST FAQ