UTC World Clock
Every time zone, one glance away
Your unified time centre. UTC and every zone you work with, docked in Chrome's side panel — beside your work instead of on top of it.
Built for people who actually need the offset
Most clock extensions are a popup that closes the moment you click away. This one stays open, and gets the hard parts right.
No permissions at all
Check the install prompt — it asks for nothing. It cannot read, change or even see the pages you visit.
Search by city, not zone ID
Mumbai, Bengaluru, NYC, Vegas, Joburg and hundreds more resolve to the right zone. No need to know that Mumbai lives in Asia/Calcutta.
Correct ISO 8601
Copy gives you 2026-09-09T12:08:40+05:30 — the zone's real offset, with Z only where the offset is truly zero.
Daylight saving done right
Offsets come from the browser's own time zone database, including the ambiguous hour that happens twice every autumn.
Two-way converter
Set a time in one zone, read it in another. Edit either side — including pasting an ISO or Unix timestamp.
Day or night at a glance
Each zone is tinted by its local time of day, so you know whether it's a reasonable hour before you call.
Convert and search
Both directions stay in sync, and the zone list understands the names people actually use.
Nothing leaves your machine
There is no server. The extension makes no network requests of any kind, and it requests no host permissions, so it has no ability to observe your browsing.
- Your zones, clock format and theme are stored locally via
chrome.storage.local - No analytics, telemetry, crash reporting or cookies
- No account, no sign-in, no third-party services
- Time calculations use the time zone database already built into Chrome