ICT to BT Converter

Use our converter below to change times between Indochina Time (ICT) to British Time (BT). If you mixed up your time zones and would like to convert BT to ICT instead, you can find that converter here: British Time to Indochina Time Converter. And if you don't like either of our tools, then go back to see all of our time zone converters.

Convert Time

Indochina Time

Indochina Time (ICT) is the time zone used in some countries in Southeast Asia, including Thailand, Vietnam, and Cambodia, where cities like Bangkok and Ho Chi Minh City are located. It is 7 hours ahead of UTC and does not observe daylight saving time.


  • Bangkok
  • Ho Chi Minh City
  • Hanoi
  • Phnom Penh

British Time

British Time (BT) is the time zone used in the United Kingdom, including cities like London and Manchester. It is the same as Greenwich Mean Time (GMT) during standard time and 1 hour ahead during daylight saving time, known as British Summer Time (BST).


  • London
  • Birmingham
  • Manchester
  • Glasgow

How to convert time from Indochina Time (ICT) to British Time (BT)

Converting between Indochina Time (ICT) and British Time (BT) could be challenging. As companies become more global, we find ourselves in a mess of calendar invites. Time changes from ICT cities like Bangkok, Ho Chi Minh City, Hanoi, Phnom Penh are -5 hour(s) apart to BT cities like London, Birmingham, Manchester, Glasgow, holiday schedules, and the basic communication becomes a juggling act. To make it easier to understand, we'll break down the process of converting time between ICT and BT into step-by-step instructions.

Understanding Indochina Time and British Time

Indochina Time is UTC7, which means that the local time in the Indochina Time zone is 7 hours apart from UTC. British Time is UTC1, which means that the local time in the British Time zone is 1 hours apart from UTC.

Calculate the Time Difference

To convert time from Indochina Time to British Time, we first need to find the time difference between both time zones. Since Indochina Time is UTC7 and British Time is UTC1, the time difference is: -5 hour(s)

  • -5 hours = Indochina Time's difference from UTC 1 + (British Time's difference from UTC 7
  • British Time has -5 hour(s) difference Indochina Time.

Step 3: Add the Time Difference to the Indochina Time Time

To convert a specific time from Indochina Time to British Time, we simply add the time difference (-5 hours) to the Indochina Time time. Make sure to also adjust the day if the converted time goes past midnight. Or if you are using 24-hour time or Military Time, ensure you’re using the correct attributes.

Step 4: Practice Converting Times

Now that you know the process, try converting different times from Indochina Time to British Time for practice before going to the answer page. Remember to always add the British Time time difference to the Indochina Time time.

Scheduling a meeting between Indochina Time and British Time

When scheduling a meeting between employees in the Indochina Time and British Time zones, there are several factors to consider to ensure that the meeting is convenient and productive for all participants. Here's a detailed breakdown of what you should consider before scheduling across time zones:

  • Convert Time Difference: As we've discussed earlier, British Time is -5 ahead of Indochina Time. It's crucial to take this time difference into account when scheduling a meeting to avoid scheduling conflicts or creating meetings at odd or inappropriate hours. In my experience, accidentally scheduling a meeting a 4am is awkward.
  • Overlapping Working Hours: To find a suitable time for the meeting, you’ll need to identify the overlapping working hours between the two time zones. For example, if employees in both zones work from 9:00 AM to 5:00 PM local time, the overlapping hours could be between 9:00 AM and 11:00 AM Indochina Time but -5 hours different to British Time. Be upfront with British Time employees to find the right time.
  • Consideration of Local Holidays: Be mindful of local Indochina Time and British Time holidays, festivals, or observances in both time zones. These events might affect employee availability or working hours. Check local calendars for both the Indochina Time and British Time zones to avoid scheduling conflicts.
  • Communicate Time Zone Differences: Clearly communicate the meeting time in both Indochina Time and British Time to avoid confusion. Using a tool like an online meeting planner or time zone converter can help simplify the process and ensure accuracy.

Converting time zones across other countries

The process of converting time between two time zones is similar regardless of the countries involved. You'll need to determine the time difference between the two zones and add it to the time in the first zone. Keep in mind that some countries may observe daylight saving time or have different time zones within the country. It's important to double-check the time difference before scheduling any meetings or events.