EST to AST Time Converter
Use this EST to AST time converter to compare US East Coast and Canada time instantly. AST is 1 hour ahead of EST, so 9:00 AM EST becomes 10:00 AM AST and 5:00 PM EST becomes 6:00 PM AST. The page is useful for business-hours overlap, international calls, remote-team handoffs, webinars, and travel planning, with daylight saving adjustments handled automatically.
EST to AST Quick Facts
Use this EST to AST converter to compare US East Coast and Canada time, check the 1 hour gap, and confirm the right slot for calls, handoffs, and deadlines. Good overlap starts around 9:00 AM EST / 10:00 AM AST.
How to Convert EST to AST
Converting between Eastern Standard Time and Atlantic Standard Time means accounting for a 1 hour gap — here's how to do it in under 10 seconds with no sign-up.
Pick the date and time in Eastern Standard Time (UTC -5) that you want to convert. Hit "Now" to load the current EST time instantly, or use "+1h" to step forward and compare.
The equivalent Atlantic Standard Time (UTC -4) time appears immediately. Since AST is 1 hour ahead of EST, most daytime conversions stay on the same calendar day.
Click "Copy Time" to grab the AST result for your calendar or message. Use "+1d" to check how the conversion shifts across dates — useful when Daylight Saving Time changes the gap.
Why Choose Our EST to AST Converter
When someone in United States suggests 9:00 AM EST, that's 10:00 AM AST. This converter shows the overlap so both sides agree on one slot — no back-and-forth.
Late-night EST times can land on a different date in AST because of the 1 hour offset. The converter labels "next day" or "previous day" next to the result so you never send a message a day early or miss a deadline.
Daylight Saving adjustments can widen or narrow the EST–AST gap by an hour. During transition weeks many people get it wrong. This converter pulls the current UTC offsets automatically, so the result is right even on the changeover day.
Product launches, sports matches, and webinars are often announced in EST. Convert the event time to AST so you know exactly when to tune in — with a 1 hour difference, a morning event in United States falls during work hours in Canada.
EST to AST Time Conversion Chart
Quick-reference conversion table covering every hour of the day at a glance.
Eastern Standard Time to Atlantic Standard Time full day schedule
| Eastern Standard Time | Atlantic Standard Time |
|---|---|
| 12:00 AM |
1:00 AM
|
| 1:00 AM |
2:00 AM
|
| 2:00 AM |
3:00 AM
|
| 3:00 AM |
4:00 AM
|
| 4:00 AM |
5:00 AM
|
| 5:00 AM |
6:00 AM
|
| 6:00 AM |
7:00 AM
|
| 7:00 AM |
8:00 AM
|
| 8:00 AM |
9:00 AM
|
| 9:00 AM |
10:00 AM
|
| 10:00 AM |
11:00 AM
|
| 11:00 AM |
12:00 PM
|
| 12:00 PM |
1:00 PM
|
| 1:00 PM |
2:00 PM
|
| 2:00 PM |
3:00 PM
|
| 3:00 PM |
4:00 PM
|
| 4:00 PM |
5:00 PM
|
| 5:00 PM |
6:00 PM
|
| 6:00 PM |
7:00 PM
|
| 7:00 PM |
8:00 PM
|
| 8:00 PM |
9:00 PM
|
| 9:00 PM |
10:00 PM
|
| 10:00 PM |
11:00 PM
|
| 11:00 PM |
12:00 AM
(next day)
|
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Convert Other Time Zones to AST
Find the time difference from any major zone into Atlantic Standard Time. Use these pages when scheduling with Canada from a different region.