When the world meets at work.
Read the day in both zones.
Crossing the border. Money, language, plugs.
Money changes hands at the border: Kolkata uses the INR (₹) and Houston uses the USD ($). Conversations can stay in English, which is official in both countries. Be careful behind the wheel: Kolkata drives on the left, Houston on the right.
- Country
- India
- Capital
- New Delhi
- Currency
- Indian rupee (INR · ₹)
- Language
- English, Hindi, Tamil
- Calling code
- +91
- Drives on
- Left
- Country
- United States
- Capital
- Washington, D.C.
- Currency
- United States dollar (USD · $)
- Language
- English
- Calling code
- +1
- Drives on
- Right
Quick answers. Before you book the call.
What's the time difference between Kolkata and Houston?
Kolkata is 10.5 hours behind Houston. Kolkata runs on GMT+5:30 and Houston on GMT-5. 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?
Standard 09:00–17:00 workdays don't intersect. Most teams compromise with one side meeting early (before 09:00) or late (after 17:00).
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 Kolkata from Houston?
About 14,182 km as the crow flies (great-circle distance). A non-stop commercial flight cruises that in roughly 17h 11m, 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 Kolkata and Houston use?
Kolkata uses the Indian rupee (INR, ₹); Houston uses the United States dollar (USD, $). 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 Kolkata from Houston?
Dial the international prefix used by your carrier (often 011), then +91, 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 Kolkata and Houston?
Both India and United States count English among their official languages, so business meetings often skip translation. Kolkata also has Hindi, Tamil; Houston adds no other official tongue.
Do Kolkata and Houston drive on the same side of the road?
No. India drives on the left, United States on the right. If you're renting, expect a learning curve on the first day — especially at roundabouts and when judging the centre of the lane.