So, everyone knows that you can do basic calculations in Spotlight, but beginning with macOS High Sierra, you can take that a step further: unit conversions.
You can do specific unit conversions if the need arises, say, “13 stone in pounds” but, you can also just type in the amount and unit you want to convert, and your Mac will suggest not just the likely conversion, but also a handful of alternatives.
Type in '$1299' and you'll immediately be told what that is in pounds Sterling (based presumably on what's set as your native currency in the Language & Region pane of System Preferences), and then when the window folds down to show more results, you'll see Euros, Yen and so on.
Type in '$1299' and you'll immediately be told what that is in pounds Sterling (based presumably on what's set as your native currency in the Language & Region pane of System Preferences), and then when the window folds down to show more results, you'll see Euros, Yen and so on.