See every price in your currency
A Chrome extension that converts the prices on any web page into the currency you actually think in — using live exchange rates. It runs only on the tab you click, keeps no history, and reverts in one click.
Quick currency calculator
Why this one
Private by design
No host permissions. It reads a page only after you click the toolbar icon on it (activeTab), and that access ends when you navigate away.
No tracking
No analytics, no accounts, no data collected. The only network call is an anonymous rate lookup.
Handles dynamic pages
A MutationObserver keeps converting prices that load in later — infinite scroll, single-page apps, Amazon's lazy widgets.
One-click revert
Every original value is remembered and restored exactly.
160+ currencies
Rates from open.er-api.com, cached for six hours, with an ECB fallback.
Open source
MIT licensed, zero runtime dependencies, no build step. Read every line on GitHub.
Known limitations
The “$” sign is ambiguous. More than twenty currencies use
it. When a page shows $ with no ISO code and no other clue, the
extension assumes US dollars. It uses the site's country
domain (.ca, .au, …) and language as hints, but a
.com page that quietly prices in Canadian or Australian dollars
will convert wrong. Prices that name the currency — CAD $,
A$, AUD 12.00 — convert correctly. The same
applies to a bare kr (assumed SEK) and a bare ¥
(assumed JPY). Trying to guess further tends to be wrong in confusing ways
more often than it helps, so this is left as a deliberate caveat.
Split-price widgets. Some shops render the symbol, the whole number and the cents as separate elements. Amazon's layout is handled; other retailers with their own custom markup are added one at a time — report a page and it can be looked at.
Privacy
The extension stores your chosen currency and a
cached copy of exchange rates — both locally, in your
browser. It sends one request, only when rates need refreshing, to
open.er-api.com: no cookies, no identifiers, no page URLs.
Full policy:
PRIVACY.md.