Convert any time and date between world time zones instantly — no maths, no confusion.
This moment around the world
| Location | Offset | Local time |
|---|---|---|
| Los Angeles | — | — |
| New York | — | — |
| São Paulo | — | — |
| London | — | — |
| Paris | — | — |
| Cairo | — | — |
| Moscow | — | — |
| Dubai | — | — |
| Karachi | — | — |
| India (Kolkata) | — | — |
| Singapore | — | — |
| Tokyo | — | — |
| Sydney | — | — |
Quick conversions
The ToolBrainy Time Zone Converter turns any date and time in one part of the world into the exact equivalent somewhere else. Pick the time you have, choose the two locations, and the converted time appears instantly — daylight saving time is handled for you automatically.
It also shows a live world clock so you can see what that same moment looks like across major cities at a glance. Everything runs in your browser using your device's own time-zone database, so it stays accurate without sending anything to a server.
Type or pick the date and time you want to convert. It defaults to right now, and "Use current time" refills it in one click.
Select the zone your time is in on the left and the zone you want it in on the right. The swap button reverses them instantly.
The converted date and time appear immediately, along with the hour difference and a world clock for every listed city.
The result updates live as you change the time or either zone — no calculate button.
DST offsets are applied automatically for every city, so spring-forward and fall-back are never wrong.
Flip the from and to zones instantly to convert in the opposite direction.
See the same moment in 13 major cities at once, each with its current UTC offset.
Preset shortcuts for common pairs like Karachi → London and New York → London.
Runs entirely in your browser using your device's time-zone data. Nothing is uploaded. Always free.
Find a time that works for teammates or clients in different countries without any guesswork.
Work out when a webinar, match, launch, or stream in another time zone starts where you are.
Check whether it is a polite hour to call loved ones overseas before you dial.
Convert flight departure and arrival times into your home zone to avoid confusion at the airport.
Know exactly when a submission or payment deadline set in another zone lands for you.
See overlapping working hours with colleagues spread across continents.
It uses your device's built-in IANA time-zone database through the browser's Intl API. That database includes the exact daylight saving rules for each region, so offsets are always current and correct.
Yes. Because it converts through a precise moment in time, the correct summer or winter offset is applied automatically for the exact date you enter — including near the switch-over.
It shows each city's difference from Coordinated Universal Time (UTC) on the selected date — for example UTC+5 for Karachi or UTC+1 for London during summer.
The dropdowns list 15 major cities spanning the Americas, Europe, Africa, the Middle East, South Asia, East Asia, and Australia. The world clock below shows 13 of them side by side.
Absolutely. Enter any date and time — the converter applies the offset rules that apply on that specific day, so future and historical conversions stay accurate.
Yes. All conversion happens locally in your browser. No times, dates, or locations are ever sent to a server.