When the world meets at work.
Read the day in both zones.
Crossing the border. Money, language, plugs.
Money changes hands at the border: London uses the GBP (£) and Kolkata uses the INR (₹). Conversations can stay in English, which is official in both countries. Cars drive on the left in both, so rentals feel familiar.
- Country
- United Kingdom
- Capital
- London
- Currency
- British pound (GBP · £)
- Language
- English
- Calling code
- +44
- Drives on
- Left
- Country
- India
- Capital
- New Delhi
- Currency
- Indian rupee (INR · ₹)
- Language
- English, Hindi, Tamil
- Calling code
- +91
- Drives on
- Left
Quick answers. Before you book the call.
What's the time difference between London and Kolkata?
London is 4.5 hours ahead of Kolkata. London runs on GMT+1 and Kolkata on GMT+5:30. The gap can shift by an hour when either side enters or leaves daylight saving — the live clocks above always reflect the current offset.
When's the best time to schedule a meeting?
There are 4 hours where both cities are inside a 09:00–17:00 workday. Aim for the middle of that window so neither side is starting or closing out.
Does daylight saving time change the difference?
Yes, if either city observes DST. When one side shifts and the other doesn't, the gap changes by one hour. The DST badges under each clock show whether each zone is currently shifted and when the next transition lands.
How far is London from Kolkata?
About 7,962 km as the crow flies (great-circle distance). A non-stop commercial flight cruises that in roughly 9h 52m, not counting airport time, winds, or routing around restricted airspace.
Can I send this meeting time as a calendar invite?
Yes. Pick a time on the slider above, open the meeting card, customize the title and duration, then download the .ics file. It imports cleanly into Google Calendar, Outlook, and Apple Calendar with the correct timezone attached.
What currency do London and Kolkata use?
London uses the British pound (GBP, £); Kolkata uses the Indian rupee (INR, ₹). Check the live rate before transferring money or paying with a card abroad — most banks add a 1–3 % FX margin on top of the mid-market rate.
How do I call London from Kolkata?
Dial the international prefix used by your carrier (often 00), then +44, then the local number — drop any leading zero of the city or mobile code. For free calls, WhatsApp, Signal, and FaceTime work over Wi-Fi regardless of country code.
What language is spoken in London and Kolkata?
Both United Kingdom and India count English among their official languages, so business meetings often skip translation. London also has no other official tongue; Kolkata adds Hindi, Tamil.
Do London and Kolkata drive on the same side of the road?
Yes — both drive on the left. Rental cars feel identical between the two.