Convert any of 160+ currencies to any other with live mid-market rates, then see what you'll actually pay once Visa, Mastercard, Amex or Discover add their foreign-transaction fees — shown as a plain breakdown with the effective rate. Includes a full unit converter (length, weight, temperature, area, volume, speed, time, data, energy, power, pressure, angle). No ads, no signup, no tracking. Rates are cached so it keeps working offline, and it installs as a PWA.
On Mac, Windows, Linux or any computer: just click "Open Converter" above — it runs right in your browser, no install needed. To keep it like a desktop app, click the install icon (⊕) at the right of Chrome or Edge's address bar, or use Safari's File → "Add to Dock" on a Mac.
On iPhone or iPad: open it in Safari, tap the Share button, then "Add to Home Screen." It behaves like a native app — full-screen, offline-capable, launches from your home screen.