Convert IST to BST Time - Mumbai to London

Convert India Standard Time (IST) to British Summer Time (BST, UTC+1) with our professional time zone converter. Designed for international business meetings between Mumbai 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.

🇮🇳

IST

India Standard 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

IST to BST Time Conversion

British Summer Time is 4 hours and 30 minutes behind India Standard Time

Always accurate • Live conversion

-5h

difference

IST to BST Time Conversion Chart

Popular Time Conversions

Complete 24-Hour Conversion

India Standard Time to British Summer Time full day schedule

🇮🇳 India Standard Time	🇬🇧 British Summer Time
12:00 AM 00:00	7:30 PM (previous day) 19:30
1:00 AM 01:00	8:30 PM (previous day) 20:30
2:00 AM 02:00	9:30 PM (previous day) 21:30
3:00 AM 03:00	10:30 PM (previous day) 22:30
4:00 AM 04:00	11:30 PM (previous day) 23:30
5:00 AM 05:00	12:30 AM 00:30
6:00 AM 06:00	1:30 AM 01:30
7:00 AM 07:00	2:30 AM 02:30
8:00 AM 08:00	3:30 AM 03:30
9:00 AM 09:00	4:30 AM 04:30
10:00 AM 10:00	5:30 AM 05:30
11:00 AM 11:00	6:30 AM 06:30
12:00 PM 12:00	7:30 AM 07:30
1:00 PM 13:00	8:30 AM 08:30
2:00 PM 14:00	9:30 AM 09:30
3:00 PM 15:00	10:30 AM 10:30
4:00 PM 16:00	11:30 AM 11:30
5:00 PM 17:00	12:30 PM 12:30
6:00 PM 18:00	1:30 PM 13:30
7:00 PM 19:00	2:30 PM 14:30
8:00 PM 20:00	3:30 PM 15:30
9:00 PM 21:00	4:30 PM 16:30
10:00 PM 22:00	5:30 PM 17:30
11:00 PM 23:00	6:30 PM 18:30

🇮🇳

12:00 AM

IST

→

7:30 PM

BST

(previous day)

🇬🇧

🇮🇳

1:00 AM

IST

→

8:30 PM

BST

(previous day)

🇬🇧

🇮🇳

2:00 AM

IST

→

9:30 PM

BST

(previous day)

🇬🇧

🇮🇳

3:00 AM

IST

→

10:30 PM

BST

(previous day)

🇬🇧

🇮🇳

4:00 AM

IST

→

11:30 PM

BST

(previous day)

🇬🇧

🇮🇳

5:00 AM

IST

→

12:30 AM

BST

🇬🇧

🇮🇳

6:00 AM

IST

→

1:30 AM

BST

🇬🇧

🇮🇳

7:00 AM

IST

→

2:30 AM

BST

🇬🇧

🇮🇳

8:00 AM

IST

→

3:30 AM

BST

🇬🇧

🇮🇳

9:00 AM

IST

→

4:30 AM

BST

🇬🇧

🇮🇳

10:00 AM

IST

→

5:30 AM

BST

🇬🇧

🇮🇳

11:00 AM

IST

→

6:30 AM

BST

🇬🇧

🇮🇳

12:00 PM

IST

→

7:30 AM

BST

🇬🇧

🇮🇳

1:00 PM

IST

→

8:30 AM

BST

🇬🇧

🇮🇳

2:00 PM

IST

→

9:30 AM

BST

🇬🇧

🇮🇳

3:00 PM

IST

→

10:30 AM

BST

🇬🇧

🇮🇳

4:00 PM

IST

→

11:30 AM

BST

🇬🇧

🇮🇳

5:00 PM

IST

→

12:30 PM

BST

🇬🇧

🇮🇳

6:00 PM

IST

→

1:30 PM

BST

🇬🇧

🇮🇳

7:00 PM

IST

→

2:30 PM

BST

🇬🇧

🇮🇳

8:00 PM

IST

→

3:30 PM

BST

🇬🇧

🇮🇳

9:00 PM

IST

→

4:30 PM

BST

🇬🇧

🇮🇳

10:00 PM

IST

→

5:30 PM

BST

🇬🇧

🇮🇳

11:00 PM

IST

→

6:30 PM

BST

🇬🇧

Best Meeting Times for IST and BST

Optimal Collaboration Hours

Best times for IST ↔ BST meetings and calls

✅ Business hours overlap available

Recommended Meeting Windows

2:00 PM IST → 9:30 AM BST

Perfect for both time zones

3:00 PM IST → 10:30 AM BST

Perfect for both time zones

4:00 PM IST → 11:30 AM BST

Perfect for both time zones

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

IST vs BST Time Zone Details

Technical Information & Comparison

Detailed timezone specifications and regional data

🇮🇳

India Standard Time

Source timezone

UTC Offset 5.5h

Code IST

Region Global

Status ✓ Active

🇬🇧

British Summer Time

Target timezone

UTC Offset 1.0h

Code BST

Region United Kingdom

Status ✓ Active

Frequently Asked Questions

How many hours behind is BST from IST and why is this pairing ideal for business?

British Summer Time (BST) is 4 hours and 30 minutes behind India Standard Time (IST), making it one of the most business-friendly international time zone pairings. When it's 2:00 PM IST in Mumbai, it's 9:30 AM BST in London. This moderate difference allows for excellent overlap between Indian afternoon hours and UK morning business hours, making it perfect for the massive UK-India business corridor.

What time is it in London when it's 2 PM in Mumbai?

When it's 2:00 PM IST in Mumbai, it's 9:30 AM BST in London during summer. Key conversions include: 10:00 AM Mumbai = 5:30 AM London, 12:00 PM Mumbai = 7:30 AM London, 4:00 PM Mumbai = 11:30 AM London, and 6:00 PM Mumbai = 1:30 PM London. This timing makes the Mumbai afternoon hours perfect for London morning business activities.

What time is it in Mumbai when it's 9 AM in London?

When it's 9:00 AM BST in London, it's 1:30 PM IST in Mumbai. Other necessary conversions: 8:00 AM London = 12:30 PM Mumbai, 11:00 AM London = 3:30 PM Mumbai, 2:00 PM London = 6:30 PM Mumbai, and 4:00 PM London = 8:30 PM Mumbai. This alignment allows UK morning meetings to catch Indian teams during productive afternoon hours

How do London and Mumbai financial markets overlap for trading?

London markets (8:30 AM-4:30 PM BST) overlap perfectly with Mumbai markets (9:15 AM-3:30 PM IST), providing 3 hours of simultaneous trading from 1:15-4:30 PM Mumbai time (8:45 AM-12:00 PM London time). This overlap is crucial for international arbitrage, cross-market trading, and real-time financial collaboration between two of the world's major financial centers.

What's the best time for business meetings between UK and India?

The optimal meeting window is 9:00 AM-1:00 PM BST (1:30-5:30 PM IST), allowing UK morning productivity to align with Indian afternoon hours. This 4-hour overlap coincides with core business hours in both locations. Avoid scheduling before 9:00 AM London time (too early in the UK) or after 1:00 PM London time (evening in India). Many UK-India businesses use 11:00 AM London time (3:30 PM Mumbai) as the optimal time.

How does the IST-BST time difference change between summer and winter?

During the UK summer (BST), India is 4.5 hours ahead of the UK. During the UK winter (GMT), India is 5 hours and 30 minutes ahead. BST runs from late March to late October (March 30-October 26, 2025). This seasonal change affects meeting scheduling - the same London time reaches India one hour later during winter, requiring slight adjustments to regular meeting schedules for optimal timing.

How do UK companies manage IT services and outsourcing with Indian teams?

UK companies leverage the 4.5-hour time difference for follow-the-sun operations, where London teams brief Indian teams in the afternoon (evening India time), Indian teams work overnight in the UK, and deliver results for London's next morning. Common patterns include 2-4 PM London handoffs (6:30-8:30 PM India), overnight development in India, and morning deliveries ready for 8-9 AM London start times.

What's the most efficient way to schedule recurring UK-India business calls?

Set recurring meetings for 11:00 AM BST (3:30 PM IST), as this time works well year-round, falling within productive hours for both locations. Use calendar tools that automatically adjust for BST/GMT transitions. Always specify both time zones in invitations (e.g., "11 AM London / 3:30 PM Mumbai"). Consider alternating weekly between 10 AM and 12 PM London time to accommodate different team preferences and varying workloads.