United States
Boston

United States

South Korea
Seoul

South Korea

Boston to Seoul Time Difference

Seoul is 13 hours ahead of Boston

BostonUnited States
11:55 PM
Wednesday, April 1, 2026
UTC-4
SeoulSouth Korea
12:55 PM
Thursday, April 2, 2026
UTC+9

Boston vs Seoul — At a Glance

Boston
Seoul
Time Zone
UTC-4
UTC+9
Currency
USD
KRW
Language
English
Korean
Dial Code
+1
+82
Hub Type
tech
tech

Boston to Seoul — Hour-by-Hour

Boston, United States
Seoul, South Korea
12:00 AM
1:00 PM
1:00 AM
2:00 PM
2:00 AM
3:00 PM
3:00 AM
4:00 PM
4:00 AM
5:00 PM
5:00 AM
6:00 PM
6:00 AM
7:00 PM
7:00 AM
8:00 PM
8:00 AM
9:00 PM
9:00 AM
10:00 PM
10:00 AM
11:00 PM
11:00 AM
12:00 AM(Apr 2)
12:00 PM
1:00 AM(Apr 2)
1:00 PM
2:00 AM(Apr 2)
2:00 PM
3:00 AM(Apr 2)
3:00 PM
4:00 AM(Apr 2)
4:00 PM
5:00 AM(Apr 2)
5:00 PM
6:00 AM(Apr 2)
6:00 PM
7:00 AM(Apr 2)
7:00 PM
8:00 AM(Apr 2)
8:00 PM
9:00 AM(Apr 2)
9:00 PM
10:00 AM(Apr 2)
10:00 PM
11:00 AM(Apr 2)
11:00 PM
12:00 PM(Apr 2)

About Boston and Seoul

Boston (population: 0.68M) is known for Harvard, MIT, biotech industry, and American history. Seoul (population: 9.7M) is known for Samsung and LG headquarters, K-pop culture, Gangnam, and rapid tech innovation.

Business Hours Overlap

Boston and Seoul are both prominent tech cities. Remote engineering teams often use asynchronous workflows due to the 13-hour gap, with code handoffs during the overlap window.

Calling Between Cities

With 13 hours between Boston (+1) and Seoul (+82), finding a mutually convenient calling time is tricky. Consider scheduling calls in advance rather than calling spontaneously.

Currency

Boston uses USD while Seoul uses KRW. Check current exchange rates before making payments or transferring funds between the two cities.

Language

Boston primarily speaks English, while Seoul speaks Korean. For business communication, English is commonly used as a bridge language in international settings.

Use our world clock tool to compare Boston and Seoul visually, or browse more timezone conversions.

Frequently Asked Questions

What is the time difference between Boston and Seoul?

Seoul, South Korea is 13 hours ahead of Boston, United States. Boston is in the America/New York timezone (UTC-4) and Seoul is in the Asia/Seoul timezone (UTC+9).

When it's noon in Boston, what time is it in Seoul?

When it's 12:00 PM (noon) in Boston, it's 1:00 AM in Seoul.

What is the best time to call Seoul from Boston?

The best time to call Seoul from Boston is during the overlapping business hours. When it's 9 AM in Boston, it's 10:00 PM in Seoul. Aim for late morning to early afternoon in Boston for the best chance of reaching someone during working hours.

What currency does Seoul use?

Seoul, South Korea uses KRW. Boston uses USD. You will need to check the current exchange rate for transactions between the two.

What language is spoken in Seoul?

The primary language in Seoul is Korean. English is widely used for international business communication.

How do I dial Seoul from Boston?

To call Seoul from Boston, dial your international access code followed by +82 and the local number. Boston uses country code +1 and Seoul uses +82.

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