IRST to GST Time Converter
Use this IRST to GST time converter to compare Iran and UAE and Gulf time instantly. GST is 0 hours and 30 minutes ahead of IRST, so 9:00 AM IRST becomes 9:30 AM GST and 5:00 PM IRST becomes 5:30 PM GST. 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 GST Quick Facts
Use this IRST to GST converter to compare Iran and UAE and Gulf time, check the 0 hours and 30 minutes gap, and confirm the right slot for calls, handoffs, and deadlines. Good overlap starts around 9:00 AM IRST / 9:30 AM GST.
How to Convert IRST to GST
Converting between Iran Standard Time and Gulf Standard Time means accounting for a 0 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 Gulf Standard Time (UTC +4) time appears immediately. Since GST is 0 hours and 30 minutes ahead of IRST, most daytime conversions stay on the same calendar day.
Click "Copy Time" to grab the GST 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 GST Converter
When someone in Iran suggests 9:00 AM IRST, that's 9:30 AM GST. 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 GST because of the 0 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 GST (UTC +4) 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 GST so you know exactly when to tune in — with a 0 hours and 30 minutes difference, a morning event in Iran falls during work hours in UAE.
IRST to GST Time Conversion Chart
Quick-reference conversion table covering every hour of the day at a glance.
Iran Standard Time to Gulf Standard Time full day schedule
| Iran Standard Time | Gulf Standard Time |
|---|---|
| 12:00 AM |
12:30 AM
|
| 1:00 AM |
1:30 AM
|
| 2:00 AM |
2:30 AM
|
| 3:00 AM |
3:30 AM
|
| 4:00 AM |
4:30 AM
|
| 5:00 AM |
5:30 AM
|
| 6:00 AM |
6:30 AM
|
| 7:00 AM |
7:30 AM
|
| 8:00 AM |
8:30 AM
|
| 9:00 AM |
9:30 AM
|
| 10:00 AM |
10:30 AM
|
| 11:00 AM |
11:30 AM
|
| 12:00 PM |
12:30 PM
|
| 1:00 PM |
1:30 PM
|
| 2:00 PM |
2:30 PM
|
| 3:00 PM |
3:30 PM
|
| 4:00 PM |
4:30 PM
|
| 5:00 PM |
5:30 PM
|
| 6:00 PM |
6:30 PM
|
| 7:00 PM |
7:30 PM
|
| 8:00 PM |
8:30 PM
|
| 9:00 PM |
9:30 PM
|
| 10:00 PM |
10:30 PM
|
| 11:00 PM |
11:30 PM
|
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