Currency Wiki, also known as Currency.Wiki

The US dollar is the world's primary reserve currency — central banks hold about 58% of their foreign reserves in dollars.

The euro is the official currency of 20 European countries collectively known as the Eurozone, with a combined population of about 350 million.

The Kuwaiti dinar is the highest-valued currency in the world — 1 KWD buys more dollars than any other single currency unit.

Bitcoin's total supply is capped at 21 million coins. The last one is expected to be mined around the year 2140.

The Japanese yen doesn't use minor units in practice — there are no "cents" of yen circulating today, even though the 1/100 unit (sen) existed historically.

The British pound (GBP) is the world's oldest currency still in use, dating back to around 760 AD.

Some countries use other countries' currencies as their official money — Panama and Ecuador both use the US dollar, El Salvador uses both the dollar and Bitcoin.

Currency.Wiki tracks live mid-market rates from multiple data providers — the same rate banks use among themselves before adding any markup.

Forex markets trade about $7.5 trillion per day, making it the largest financial market on Earth by volume.

Hyperinflation in Zimbabwe peaked in November 2008 at an estimated 79.6 billion percent — prices doubled every 24 hours.

Gold (XAU) is still tracked as a currency in foreign exchange markets — quoted in troy ounces per US dollar, just like any traditional currency.

The Swiss franc (CHF) is considered a "safe haven" currency. Investors flock to it during global uncertainty, often pushing its value up.