yenlens

Yen prices, translated.

Turn yen prices into their latest USD estimates on demand—or automatically on the Japanese sites you visit most.

  • Free
  • Chrome
  • Manifest V3
  • No account
Download yenlensInstallation guide

Version 1.1.0 · Works in current Google Chrome

page.scanrate ready
yenlens striped yen symbol
Starting at¥350,400
USD estimate$2,141.94

Example at ¥1 = $0.00611. yenlens fetches the latest published JPY/USD reference rate when it converts a page.

Install in under a minute.

yenlens is distributed as a small unpacked Chrome extension. There is no installer, login, or setup wizard.

  1. 01

    Download and unzip

    Download yenlens, then open the zip so you have a normal folder containing manifest.json.

  2. 02

    Open Extensions

    Paste chrome://extensions into Chrome's address bar.

  3. 03

    Turn on Developer mode

    Use the Developer mode switch in the top-right corner of the Extensions page.

  4. 04

    Load and pin it

    Choose Load unpacked, select the yenlens folder, then pin yenlens from Chrome’s toolbar menu.

Once installed, open the striped ¥ in your toolbar. Convert the current page, or turn on auto-convert for that site.

Download the zip

Made for the page you're already on.

No copy-pasting into a calculator. No switching tabs. No permanent changes to the website.

Convert now or every time

Convert one page on demand, or enable a site once and let yenlens handle every future page there.

Built for real webpages

Recognizes ¥, JPY, and 円—even when the number and currency marker live in separate HTML elements.

Keeps watching the page

Prices loaded later by carousels, filters, and infinite scroll are converted automatically while yenlens is on.

Your page stays in your browser.

Page contents are never uploaded. Manual conversion uses temporary access to the active tab; auto-convert requests access only for each hostname you explicitly enable.

Page data uploaded
None
Account required
No
Rate source
Frankfurter
Price
Free