Kolkata to London time zone converter

Kolkata
GMT+5:30
India
06:09:00
Oct 30
  • 12
    AM
  • 1
    AM
  • 2
    AM
  • 3
    AM
  • 4
    AM
  • 5
    AM
  • 6
    AM
  • 7
    AM
  • 8
    AM
  • 9
    AM
  • 10
    AM
  • 11
    AM
  • 12
    PM
  • 1
    PM
  • 2
    PM
  • 3
    PM
  • 4
    PM
  • 5
    PM
  • 6
    PM
  • 7
    PM
  • 8
    PM
  • 9
    PM
  • 10
    PM
  • 11
    PM
London
GMT
United Kingdom
00:39:00
Oct 30
  • 6:30
    PM
  • 7:30
    PM
  • 8:30
    PM
  • 9:30
    PM
  • 10:30
    PM
  • 11:30
    PM
  • 12:30
    AM
  • 1:30
    AM
  • 2:30
    AM
  • 3:30
    AM
  • 4:30
    AM
  • 5:30
    AM
  • 6:30
    AM
  • 7:30
    AM
  • 8:30
    AM
  • 9:30
    AM
  • 10:30
    AM
  • 11:30
    AM
  • 12:30
    PM
  • 1:30
    PM
  • 2:30
    PM
  • 3:30
    PM
  • 4:30
    PM
  • 5:30
    PM

This simple Kolkata to London time zone converter allows you to quickly and visually understand the time difference between Kolkata (Kolkata) and London (London).

2026-10-30: 6:09 AM Kolkata

12:39 AM GMT

Kolkata: UTC+05:30 · London: UTC+00:00

Just hover over the colored hour tiles, and you’ll instantly see the corresponding time in both zones. The time difference between Kolkata and London is 5 hours 30 minutes, with Kolkata being ahead. For example, if it is 6:09 AM Kolkata, the equivalent time in London will be 12:39 AM GMT.

Kolkata to London hour-by-hour

2026-10-30 · Kolkata
KolkataLondon
00:00 GMT+5:3018:30 (-1) GMT
00:30 GMT+5:3019:00 (-1) GMT
01:00 GMT+5:3019:30 (-1) GMT
01:30 GMT+5:3020:00 (-1) GMT
02:00 GMT+5:3020:30 (-1) GMT
02:30 GMT+5:3021:00 (-1) GMT
03:00 GMT+5:3021:30 (-1) GMT
03:30 GMT+5:3022:00 (-1) GMT
04:00 GMT+5:3022:30 (-1) GMT
04:30 GMT+5:3023:00 (-1) GMT
05:00 GMT+5:3023:30 (-1) GMT
05:30 GMT+5:3000:00 GMT
06:00 GMT+5:3000:30 GMT
06:30 GMT+5:3001:00 GMT
07:00 GMT+5:3001:30 GMT
07:30 GMT+5:3002:00 GMT
08:00 GMT+5:3002:30 GMT
08:30 GMT+5:3003:00 GMT
09:00 GMT+5:3003:30 GMT
09:30 GMT+5:3004:00 GMT
10:00 GMT+5:3004:30 GMT
10:30 GMT+5:3005:00 GMT
11:00 GMT+5:3005:30 GMT
11:30 GMT+5:3006:00 GMT
12:00 GMT+5:3006:30 GMT
12:30 GMT+5:3007:00 GMT
13:00 GMT+5:3007:30 GMT
13:30 GMT+5:3008:00 GMT
14:00 GMT+5:3008:30 GMT
14:30 GMT+5:3009:00 GMT
15:00 GMT+5:3009:30 GMT
15:30 GMT+5:3010:00 GMT
16:00 GMT+5:3010:30 GMT
16:30 GMT+5:3011:00 GMT
17:00 GMT+5:3011:30 GMT
17:30 GMT+5:3012:00 GMT
18:00 GMT+5:3012:30 GMT
18:30 GMT+5:3013:00 GMT
19:00 GMT+5:3013:30 GMT
19:30 GMT+5:3014:00 GMT
20:00 GMT+5:3014:30 GMT
20:30 GMT+5:3015:00 GMT
21:00 GMT+5:3015:30 GMT
21:30 GMT+5:3016:00 GMT
22:00 GMT+5:3016:30 GMT
22:30 GMT+5:3017:00 GMT
23:00 GMT+5:3017:30 GMT
23:30 GMT+5:3018:00 GMT

Kolkata

Asia/Kolkata

Uses IANA time zone rules for the selected date.

GMT+5:30 · UTC+05:30

London

Europe/London

Uses IANA time zone rules for the selected date.

GMT · UTC+00:00

Frequently Asked Questions

2026-10-30 · Kolkata ahead of London: 5 hours 30 minutes. Kolkata: UTC+05:30; London: UTC+00:00.

2026-10-30 · 06:09 Kolkata → 00:39 GMT.

Weekday overlap (Mon–Fri, 09:00–17:00 in both places): Kolkata: 14:30 GMT+5:30 – 17:00 GMT+5:30 ↔ London: 09:00 GMT – 11:30 GMT

Kolkata ahead of London: 5 hours 30 minutes

Date → Select range → .ics. 2026-10-30 · 06:09 Kolkata → 00:39 GMT.

Kolkata: Uses IANA time zone rules for the selected date. No clock change in the next 370 days London: Uses IANA time zone rules for the selected date. Next clock change: 2027-03-28 02:00 GMT+1