UTC time to Tehran time
Tehran is 3.5 hours ahead of UTC all year (UTC UTC/UTC+00:00 in summer; Tehran GMT+3:30/UTC+03:30). Enter a UTC time below to convert it, or leave it blank to see the current time in both cities.
How to use the UTC to Tehran time
- Type a UTC time (24-hour) and optionally a date, or leave blank for now.
- Click Convert.
- Read the Tehran time and the working-hours table.
Time difference between UTC and Tehran
Tehran is 3.5 hours ahead of UTC all year. Neither city changes its clocks, so the difference is the same all year. UTC uses UTC time (UTC+00:00 in January, UTC+00:00 in July); Tehran uses Asia/Tehran (UTC+03:30 in January, UTC+03:30 in July).
Working week in UTC and Tehran
UTC: Coordinated Universal Time never changes and has no daylight saving. It is the reference for aviation, servers, logs and international scheduling; London matches it only in winter.
Tehran: Iran Standard Time, UTC+3:30 all year (daylight saving was abolished in 2022). Weekend is Friday, with Thursday a half day for many; the week starts Saturday.
Quick conversion table (summer difference)
| UTC | Tehran |
|---|---|
| 08:00 | 11:30 |
| 09:00 | 12:30 |
| 10:00 | 13:30 |
| 12:00 | 15:30 |
| 14:00 | 17:30 |
| 16:00 | 19:30 |
| 18:00 | 21:30 |
| 20:00 | 23:30 |
| 22:00 | 01:30 (next day) |
Table uses the July difference; the tool above applies the exact rule for any date.
Best time to call between UTC and Tehran
Within normal office hours (09:00–18:00) in both cities: 9:00–14:00 UTC time. For a compromise outside that window, the fairest slots are the ones nearest each side's start or end of day, alternating who takes the inconvenient hour.
Reverse
Need the other direction? See Tehran to UTC, or the general time zone converter.
Frequently asked questions
How many hours ahead is Tehran from UTC?
Tehran is 3.5 hours ahead of UTC all year.
When it is 12:00 noon in UTC, what time is it in Tehran?
15:30 in summer (); use the tool for a specific date.
Does the converter handle daylight saving?
Yes, for the exact date you enter, using the IANA time-zone rules in your browser.
Privacy
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Last updated 2026-09-23.