Pick two currencies and an amount to convert at the latest published exchange rate. The rate used is shown alongside the result so you can see exactly what the conversion is based on, and swap the direction without retyping.
These are mid-market reference rates - the midpoint between what buyers and sellers are quoting on the interbank market. No consumer actually trades at the mid-market rate. It is the benchmark against which to judge whatever your bank or exchange offers you.
Banks and bureaux add a spread to the mid-market rate, typically 0.5% to 3%, and often a fixed fee on top. Airport exchange desks are routinely 10% or worse. Card payments abroad are usually close to mid-market plus a small fee, provided you decline "dynamic currency conversion" and let the transaction settle in the local currency.
Almost certainly not. These are mid-market reference rates. Banks and exchange bureaus add a spread and often a fixed fee, so the rate you are offered is typically 0.5-3% worse. Use this figure as the benchmark to judge an offer against.
Rates are fetched when you open the page and refresh through the day. They are indicative reference rates rather than live trading prices, and should not be used for dealing decisions.
Steuervergleich Kanton Zürich — Gemeindesteuern vergleichen (Deutsch)