Convert GMT to BST Time - London to London

Convert Greenwich Mean Time (GMT) to British Summer Time (BST, UTC+1) with our professional time zone converter. Designed for international business meetings between London to London, this tool provides real-time conversion, optimal meeting time suggestions, business hours comparison, and 24-hour conversion tables. Features include live clock displays, meeting scheduler, time zone maps, and daylight saving time handling.

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GMT

Greenwich Mean Time

Current Time

Select Date & Time

→

🇬🇧

BST

British Summer Time

Current Time

Converted Time

Select a time to convert

Time Difference

Your Local Time

UTC Time

GMT to BST Time Conversion

British Summer Time is 1 hour ahead of Greenwich Mean Time

Always accurate • Live conversion

difference

GMT to BST Time Conversion Chart

Popular Time Conversions

Complete 24-Hour Conversion

Greenwich Mean Time to British Summer Time full day schedule

🌍 Greenwich Mean Time	🇬🇧 British Summer Time
12:00 AM 00:00	1:00 AM 01:00
1:00 AM 01:00	2:00 AM 02:00
2:00 AM 02:00	3:00 AM 03:00
3:00 AM 03:00	4:00 AM 04:00
4:00 AM 04:00	5:00 AM 05:00
5:00 AM 05:00	6:00 AM 06:00
6:00 AM 06:00	7:00 AM 07:00
7:00 AM 07:00	8:00 AM 08:00
8:00 AM 08:00	9:00 AM 09:00
9:00 AM 09:00	10:00 AM 10:00
10:00 AM 10:00	11:00 AM 11:00
11:00 AM 11:00	12:00 PM 12:00
12:00 PM 12:00	1:00 PM 13:00
1:00 PM 13:00	2:00 PM 14:00
2:00 PM 14:00	3:00 PM 15:00
3:00 PM 15:00	4:00 PM 16:00
4:00 PM 16:00	5:00 PM 17:00
5:00 PM 17:00	6:00 PM 18:00
6:00 PM 18:00	7:00 PM 19:00
7:00 PM 19:00	8:00 PM 20:00
8:00 PM 20:00	9:00 PM 21:00
9:00 PM 21:00	10:00 PM 22:00
10:00 PM 22:00	11:00 PM 23:00
11:00 PM 23:00	12:00 AM (next day) 00:00

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12:00 AM

GMT

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1:00 AM

BST

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1:00 AM

GMT

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2:00 AM

BST

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2:00 AM

GMT

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3:00 AM

BST

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3:00 AM

GMT

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4:00 AM

BST

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4:00 AM

GMT

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5:00 AM

BST

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5:00 AM

GMT

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6:00 AM

BST

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6:00 AM

GMT

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7:00 AM

BST

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7:00 AM

GMT

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8:00 AM

BST

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8:00 AM

GMT

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9:00 AM

BST

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9:00 AM

GMT

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10:00 AM

BST

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10:00 AM

GMT

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11:00 AM

BST

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11:00 AM

GMT

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12:00 PM

BST

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12:00 PM

GMT

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1:00 PM

BST

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1:00 PM

GMT

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2:00 PM

BST

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2:00 PM

GMT

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3:00 PM

BST

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3:00 PM

GMT

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4:00 PM

BST

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4:00 PM

GMT

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5:00 PM

BST

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5:00 PM

GMT

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6:00 PM

BST

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6:00 PM

GMT

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7:00 PM

BST

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7:00 PM

GMT

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8:00 PM

BST

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8:00 PM

GMT

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9:00 PM

BST

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9:00 PM

GMT

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10:00 PM

BST

🇬🇧

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10:00 PM

GMT

→

11:00 PM

BST

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11:00 PM

GMT

→

12:00 AM

BST

(next day)

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Best Meeting Times for GMT and BST

Optimal Collaboration Hours

Best times for GMT ↔ BST meetings and calls

✅ Business hours overlap available

Recommended Meeting Windows

9:00 AM GMT → 10:00 AM BST

Perfect for both time zones

10:00 AM GMT → 11:00 AM BST

Perfect for both time zones

11:00 AM GMT → 12:00 PM BST

Perfect for both time zones

Based on standard business hours (9:00 AM - 6:00 PM) in each time zone

GMT vs BST Time Zone Details

Technical Information & Comparison

Detailed timezone specifications and regional data

🌍

Greenwich Mean Time

Source timezone

UTC Offset 0.0h

Code GMT

Region Global

Status ✓ Active

🇬🇧

British Summer Time

Target timezone

UTC Offset 1.0h

Code BST

Region Global

Status ✓ Active

Frequently Asked Questions

What is the time difference between Greenwich Mean Time (GMT) and British Summer Time (BST)?

Greenwich Mean Time (GMT) is 1 hour behind British Summer Time (BST). To convert GMT to BST, you need to add 1 hour. For example, if it is noon GMT, it will be 1:00 PM BST.

What should I consider when scheduling meetings across GMT and BST?

When planning meetings between participants in GMT and BST, be mindful of the 1-hour difference. It’s advisable to schedule meetings during overlapping business hours; for example, if it’s convenient for participants in GMT from 9:00 AM to 5:00 PM, this translates to 10:00 AM to 6:00 PM in BST. This ensures that all parties can attend without conflicts.

How do I manually convert GMT to BST?

To manually convert GMT to BST, take your GMT and add 1 hour. For instance: If it’s 8:00 AM in GMT, adding 1 hour gives you 9:00 AM in BST. This method can be applied at any hour of the day.

Does daylight saving time affect the conversion from GMT to BST?

Yes, daylight saving time directly impacts this conversion. BST is observed during the summer months, starting on the last Sunday in March and ending on the last Sunday in October. During this period, clocks are set forward by one hour, making BST UTC+1.

How can I easily convert GMT to BST?

You can use the time zone converter available at iformat.io. This tool lets you input any GMT and instantly receive the corresponding BST time, simplifying the conversion process.