The converter on the homepage does one job: it takes an amount in one currency and shows you what it's worth in another, right now. Type a number into the "You Send" box, pick your two currencies, and the "They Receive" side updates on its own. There's no submit button because there's nothing to submit — it's just arithmetic against a live rate.
The rate itself comes from our backend, which pulls exchange rates and refreshes them every 30 minutes. That's frequent enough to track normal market movement without hammering a rate provider on every keystroke. If you're watching a currency during a genuinely volatile stretch — a central bank announcement, for instance — refresh the page to pull the newest snapshot rather than trusting a tab you opened an hour ago.
Picking a currency is a search-first experience, not a scroll-through-176-options one. Click either currency box and start typing — the country name, the currency name, or the three-letter code all work. "Rupee" and "INR" get you to the same place. This matters more than it sounds like it should: on a phone, scrolling a 176-item list is the kind of small friction that makes people abandon a page.
Swapping direction is a single tap on the circular arrow icon between the two panels. It flips both the currencies and the amount, so if you'd just converted 50 EUR to USD, tapping swap gives you the USD amount converted back to EUR — useful for sanity-checking a rate ("does this round-trip make sense?") before you commit to it.
Every converted pair also gets its own permanent page — /convert/usd/inr, /convert/gbp/jpy, and so on for any combination of the 172 currencies we track. Bookmark the ones you check often. Each of those pages carries a short historical chart underneath the calculator, so you're not just seeing today's number in isolation.
One thing worth setting expectations on: this is a reference rate, not a rate any bank or transfer service will actually give you. It's the same "mid-market" number you'd see on a financial data terminal — useful for knowing what a fair price looks like, not a quote you can lock in. If a transfer provider's rate is meaningfully worse than what you see here, that gap is their margin.
Dark mode lives in the top-right corner of the header if the white background is rough on your eyes at 1am — it's a genuine theme, not just a CSS filter, so contrast and colors are tuned separately for it.