SYNCA
Chrome extension · Free

Every timeon a page,in your timezone

Synca spots dates and times on any web page and shows them in your local zone — daylight-saving aware, with a quick multi-zone converter built in.

Add to Chrome — freeSee how it works
DST-aware·Multi-zone converter·55 languages·Private — no accounts, no tracking
What it does

Timezones, handled.

On-page detection

Times on the page, converted in place. Hover, annotate, or replace — your call.

Quick convert

Paste “fri 5pm PT” and read it across every zone, instantly.

Multi-zone roster

Keep New York, London, Tokyo — one glance away.

DST-aware

Warns you when clocks are about to change, so you never miss by an hour.

Light & dark

A sharp UI that follows your system theme. 12 or 24-hour.

Private by design

Everything runs locally. No accounts, no servers, no tracking.

How it works

Three steps. Zero math.

  1. 01

    Add Synca to Chrome

    One click from the Web Store. No sign-up, nothing to configure.

  2. 02

    Browse any page

    Synca quietly detects dates and times wherever they appear.

  3. 03

    See them in your zone

    Hover or click a time for the full breakdown across your zones.

A faux email with times highlighted as lime chips, converted to your local zone
A closer look

See it in action.

The popup — convert and track zones at a glance
The popup — convert and track zones at a glance
Times converted in place, right on the page
Times converted in place, right on the page
Click any time for the full breakdown
Click any time for the full breakdown
Paste a time, read it across every zone
Paste a time, read it across every zone
Light and dark, 12 or 24-hour
Light and dark, 12 or 24-hour
Light & dark

Matches your setup.

Synca follows your system theme out of the box, or you pick a side. 12 or 24-hour, your call — and a stable, tabular clock that never jitters.

Add to Chrome — free
Synca popup shown side by side in light and dark themes
Questions

Good to know.

Is Synca free?

Yes — completely free, no accounts, no paywalls.

Does it collect my data?

No. Everything is processed locally in your browser; nothing is sent to any server, and there is no tracking.

Which sites does it work on?

Any site — it detects times on the pages you visit and converts them on the spot.

How does it know my timezone?

Your system timezone by default; you can set an assumed source zone for ambiguous times.

What about daylight saving?

Synca is DST-aware and warns you when a conversion crosses a clock change.

Which languages does it support?

55 — every locale Chrome supports.

Stop doing timezone math.

Add Synca to Chrome — free