IRST to EST Time Converter
Use this IRST to EST time converter to compare Iran and US East Coast time instantly. EST is 8 hours and 30 minutes behind IRST, so 9:00 AM IRST becomes 12:30 AM EST and 5:00 PM IRST becomes 8:30 AM EST. The page is useful for business-hours overlap, international calls, remote-team handoffs, webinars, and travel planning, with daylight saving adjustments handled automatically.
IRST to EST Quick Facts
Use this IRST to EST converter to compare Iran and US East Coast time, check the 8 hours and 30 minutes gap, and confirm the right slot for calls, handoffs, and deadlines. Good overlap starts around 6:00 PM IRST / 9:30 AM EST.
How to Convert IRST to EST
Converting between Iran Standard Time and Eastern Standard Time means accounting for a 8 hours and 30 minutes gap — here's how to do it in under 10 seconds with no sign-up.
Pick the date and time in Iran Standard Time (UTC +3:30) that you want to convert. Hit "Now" to load the current IRST time instantly, or use "+1h" to step forward and compare.
The equivalent Eastern Standard Time (UTC -5) time appears immediately. Since EST is 8 hours and 30 minutes behind of IRST, most daytime conversions stay on the same calendar day.
Click "Copy Time" to grab the EST 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 IRST to EST Converter
When someone in Iran suggests 6:00 PM IRST, that's 9:30 AM EST. This converter shows the overlap so both sides agree on one slot — no back-and-forth.
Late-night IRST times can land on a different date in EST because of the 8 hours and 30 minutes 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.
The half-hour offset between IRST (UTC +3:30) and EST (UTC -5) already makes mental math tricky — add Daylight Saving Time and the gap can shift further. This converter uses live UTC offsets, so you're always accurate.
Product launches, sports matches, and webinars are often announced in IRST. Convert the event time to EST so you know exactly when to tune in — with a 8 hours and 30 minutes difference, a morning event in Iran hits the evening in United States.
IRST to EST Time Conversion Chart
Quick-reference conversion table covering every hour of the day at a glance.
Iran Standard Time to Eastern Standard Time full day schedule
| Iran Standard Time | Eastern Standard Time |
|---|---|
| 12:00 AM |
3:30 PM
(previous day)
|
| 1:00 AM |
4:30 PM
(previous day)
|
| 2:00 AM |
5:30 PM
(previous day)
|
| 3:00 AM |
6:30 PM
(previous day)
|
| 4:00 AM |
7:30 PM
(previous day)
|
| 5:00 AM |
8:30 PM
(previous day)
|
| 6:00 AM |
9:30 PM
(previous day)
|
| 7:00 AM |
10:30 PM
(previous day)
|
| 8:00 AM |
11:30 PM
(previous day)
|
| 9:00 AM |
12:30 AM
|
| 10:00 AM |
1:30 AM
|
| 11:00 AM |
2:30 AM
|
| 12:00 PM |
3:30 AM
|
| 1:00 PM |
4:30 AM
|
| 2:00 PM |
5:30 AM
|
| 3:00 PM |
6:30 AM
|
| 4:00 PM |
7:30 AM
|
| 5:00 PM |
8:30 AM
|
| 6:00 PM |
9:30 AM
|
| 7:00 PM |
10:30 AM
|
| 8:00 PM |
11:30 AM
|
| 9:00 PM |
12:30 PM
|
| 10:00 PM |
1:30 PM
|
| 11:00 PM |
2:30 PM
|
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