Chrome extension
Highlight a time. See it in your time zone.
Select a time like "Tuesday 4pm ET" or "15:00 CET" on any page, right-click, and Zonelight shows it in your own local time. No tab-switching, no mental arithmetic.
Not yet in the Chrome Web Store. Free. Pro, $19 one-time with add-to-calendar, is coming soon.
- Free core
- No access to the pages you visit
- Works offline
Launch livestream
Join us on Tuesday 4pm ET for the walkthrough and live Q&A.
Zonelight
Tuesday 4pm ET
Read as: ET
How it works
Three steps, no setup
Highlight
Select a time on a page, such as "Tuesday 4pm ET" or "15:00 CET", with or without a date.
Right-click
Choose "Convert to my time" from the menu. It appears only when text is selected.
Read it
A small window shows the time in your zone, with any extra zones you saved and a note if the day changes.
Pricing
Free to use, with an optional Pro
The extension is free with no account, saved zones included. Pro adds add-to-calendar for $19 one-time and is not on sale yet.
Free
Free
Convert highlighted times and keep saved zones, no account.
- Right-click conversion of any highlighted time
- Paste a time into the toolbar popup
- Save extra time zones that sync through Chrome
- Daylight saving handled for the date you highlight
Coming soon to the Chrome Web Store
Pro
$19one-time
Everything in Free, plus:
- Add a converted time to your calendar
Refunds apply only to Pro, once it is on sale: if Pro does not work as described, contact support and we will refund it.
What it understands
The formats people actually write
Times and dates
Times such as 3pm, 10:30 am and 15:00, with or without a date or weekday.
Zones and offsets
Abbreviations like EST, PDT, CET and JST, offsets like GMT+2, and names like Europe/Paris.
Daylight saving
Uses your browser's own time zone data for the date you highlighted, and flags times that do not exist or happen twice.
Permissions, in plain words
It never reads the pages you visit
Two permissions, both small. No network requests, no analytics, no remote code.
Context menus
Adds the "Convert to my time" item to the right-click menu when you have text selected.
Storage
Remembers the extra time zones you choose to save, in Chrome sync storage.
Read the privacy policy.
FAQ
Questions people ask
Can it be wrong?
Some abbreviations mean different zones in different places. IST is read as India Standard Time and BST as British Summer Time. For anything important, check the time against the original source.
Does it send what I highlight anywhere?
No. The text is converted inside your browser and is never sent to anyone.
Does it work in other browsers?
Zonelight is built for Chrome.
It says no time zone was found.
Include a zone in the selection, such as EST, CET, UTC+2 or Asia/Tokyo.
Questions before you install?
Read the answers on the support page.