Coordinated Universal Time (utc) is used in United Kingdom. The IANA timezone identifier is UTC.

British Summer Time (bst) is used in United Kingdom. The IANA timezone identifier is Europe/London.

UTC to BST Time Converter

Coordinated Universal Time → British Summer Time

UTC = UTC+0BST = UTC+1

⚠️ BST is ambiguous — on this page it means British Summer Time. It also refers to:

UTC → Bangladesh Standard Time (Dhaka) ↗

ClockinSync

BASE

09:00

Work Clients Team +

00:0006:0012:0018:0024:00

BST (London)

United Kingdom · UTC±0

09:00

New York

USA · -5h

04:00

Tokyo

Japan · +8h

17:00

Dubai

United Arab Emirates · +3h

12:00

Sydney

Australia · +9h

18:00

UTC (London) to BST (London) — exact time difference

UTC (London) is 1 hour behind BST (London). When it's noon in UTC (London), it's 13:00 in BST (London).

UTC (London) runs on Europe/London; BST (London) runs on Europe/London. Together they are 1 hour apart.

Working hours overlap

Both UTC (London) and BST (London) are simultaneously in business hours for 7 hours per day (assuming standard 9:00–17:00 working hours).

00:0006:0012:0018:0024:00

UTC (London)

BST (London)

Overlap (7h)

Best call times between these locations

There is a 7-hour daily window where both locations are in business hours. The 3 best slots are listed below.

09:00 London / 10:00 London✓ Both working

10:00 London / 11:00 London✓ Both working

11:00 London / 12:00 London✓ Both working

Working hours defined as 09:00–17:00 local time for each location.

Public holidays this year

UTC (London)

No upcoming public holidays this year.

BST (London)6 holidays

Jul 13Battle of the Boyne

Aug 3Summer Bank Holiday

Aug 31Summer Bank Holiday

Nov 30Saint Andrew's Day

Dec 25Christmas Day

UTC (London) and BST (London) — practical scheduling

UTC (London) (United Kingdom) and BST (London) (United Kingdom) are 1 hours apart. With a 7-hour daily overlap in standard business hours, both teams can connect in real time without either side stretching beyond their normal workday.

💡 Practical scheduling guidelines

✅

If you are in UTC (London), aim for 09:00–10:00, which corresponds to 10:00–11:00 in BST (London) — both teams are within working hours.

✅

If you are in UTC (London), aim for 10:00–11:00, which corresponds to 11:00–12:00 in BST (London) — both teams are within working hours.

✅

If you are in UTC (London), aim for 11:00–12:00, which corresponds to 12:00–13:00 in BST (London) — both teams are within working hours.

Avoid scheduling mistakes — especially around daylight saving changes. Use the ClockinSync Chrome Extension to instantly verify and compare both time zones directly in your browser, without manual calculations.

Add to your browser — Free →

Need a specific time? Use the slider or type directly into the input bar — it understands "3pm", "15:30", and location-specific formats like "9am UTC (London)".

UTC (London) ↔ BST (London)

7h of business hours overlap daily (09:00–17:00)

UTC (London)

BST (London)

00:00

01:00

02:00

03:00

04:00

05:00

06:00

07:00

08:00

09:00Working

10:00Working

11:00Working

12:00Working

13:00Working

14:00Working

15:00Working

16:00Working

17:00off

17:00

18:00

19:00

20:00

21:00

22:00

23:00

00:00+1d

Working hours: 09:00–17:00 local. Green = both working. Purple = one side only.

Frequently Asked Questions

What is the difference between utc and bst?

Coordinated Universal Time (utc) is UTC+0 and British Summer Time (bst) is UTC+1. The difference between them is 1 hours.

Where is utc used?

Coordinated Universal Time (utc) is used in United Kingdom and surrounding regions. The IANA timezone identifier is UTC.

Where is bst used?

British Summer Time (bst) is used in United Kingdom and surrounding regions. The IANA timezone identifier is Europe/London. Note: bst is ambiguous and may refer to other timezones.

How do I convert utc to bst?

Use the interactive converter above. Drag the time slider to any utc time and the bst equivalent updates instantly. You can also type a time like "3pm" or "15:00" in the input bar.

Popular UTC conversions

UTC → New York UTC → Tokyo UTC → Dubai UTC → Sydney UTC → Paris UTC → Berlin UTC → Singapore UTC → Los Angeles UTC → Toronto UTC → Mumbai

Popular BST conversions

New York → BST Tokyo → BST Dubai → BST Sydney → BST Paris → BST Berlin → BST Singapore → BST Los Angeles → BST Toronto → BST Mumbai → BST