Istanbul to Tehran Time Converter
Convert time between Istanbul and Tehran with live clocks and the current, daylight-saving-aware time difference.
About this tool
Istanbul to Tehran Time Converter
Convert time between Istanbul and Tehran with live clocks and the current, daylight-saving-aware time difference.
See what time it is in Tehran when you know the time in Istanbul — this converter shows both cities' clocks live and the exact current time difference between them, adjusted automatically for daylight saving. Istanbul runs on the Europe/Istanbul zone (TRT) and Tehran on Asia/Tehran (IRST); the tool reads your browser's own time-zone data, so the offset is always right even across the days each city changes its clocks. Type any Istanbul time to pin the matching Tehran time, or press swap to convert the other way. Nothing is uploaded.
How to use Istanbul to Tehran Time Converter
- 1
Open Istanbul to Tehran Time Converter on AltFTool — it loads instantly in your browser.
- 2
Read the live clocks at the top for the current time in Istanbul and Tehran.
- 3
Type a specific time into the Istanbul field to see the matching Tehran time and date.
- 4
Press swap to convert Tehran times to Istanbul instead.
Why use Istanbul to Tehran Time Converter
Live clocks for both cities
The current local time in Istanbul and Tehran updates every second, with each city's UTC offset and abbreviation shown.
Daylight-saving aware
Offsets come from the browser's IANA time-zone database, so the difference is correct on either side of a daylight-saving change — no stale table.
Pick any time
Enter a specific Istanbul time to see the exact Tehran time for today, including the date if the conversion crosses midnight.
Free and private
It runs entirely in your browser — no account, and no times are sent anywhere.
Common use cases
- Scheduling a call or meeting between Istanbul and Tehran without miscounting the hours.
- Working out when a live event in Tehran starts in Istanbul local time.
- Planning travel or a deadline across the Istanbul–Tehran time difference.
Frequently asked questions
What is the time difference between Istanbul and Tehran?
It can change through the year because one or both cities observe daylight saving, so the converter above shows the current difference live rather than a fixed number. Istanbul uses Europe/Istanbul and Tehran uses Asia/Tehran.
What time is it in Tehran when it's 9:00 AM in Istanbul?
Type 9:00 into the Istanbul field above and the converter shows the matching Tehran time for today, daylight saving included. It also shows the Tehran date in case the time crosses midnight.
Does this converter handle daylight saving between Istanbul and Tehran?
Yes. It uses your browser's own time-zone data (Europe/Istanbul for Istanbul, Asia/Tehran for Tehran), which carries each region's daylight-saving rules, so the result stays correct all year.
Can it convert Tehran time to Istanbul time as well?
Yes — press the swap button and the converter flips to show Tehran → Istanbul, with the same live clocks and time picker.
Is the Istanbul to Tehran time conversion accurate and private?
It relies on the standard IANA time-zone database built into your browser, not an approximation, and makes no network calls, so your times stay on your device.
Embed this tool on your site
Add the Istanbul to Tehran Time Converter widget to your blog or website — free, responsive, no signup. Just keep the “Widget by AltFTool” credit link visible.
<iframe src="https://www.altftool.com/embed/widget/istanbul-to-tehran-time-converter"
title="Istanbul to Tehran Time Converter — free AltFTool widget"
width="100%" height="640" style="border:0;border-radius:12px;overflow:hidden"
loading="lazy" referrerpolicy="no-referrer-when-downgrade" allow="clipboard-write"></iframe>
<p style="font-size:12px;margin:4px 0 0">Widget by <a href="https://www.altftool.com/tools/all/istanbul-to-tehran-time-converter?utm_source=embed&utm_medium=widget" rel="nofollow">AltFTool — free online tools</a></p>