One of my favorite little Mac and iOS tools is Soulver. Billed as part notepad and part calculator, you could think of it as a vastly simpler spreadsheet that uses text instead of cells. I use it all the time for little calculations, whether for work or, more commonly, for things like running pace calculations or little things around the house.¹ For example, my coffee calculator.

I make pour-over coffee pretty much every morning (the rare exception being when I go off to a coffee shop and get some espresso), and I have baseline recipes dialed in long since. However, sometimes I have some random weight of beans left over when hitting the end of a bag. Unless it happens to be a pretty clean ratio to one of the weights I use as the starting point for any given coffee, I need to do some math to figure out how much water I ought to use and roughly how many ounces of drinkable coffee “yield” I ought to expect as a result. It’s not perfect, of course, but it’s a great starting point.

This little calculator is something you could do many other ways, but Soulver makes it really easy. You can download this particular sheet directly if you like, but of course you can also see here how easy it was to make! So if you’re on macOS or iOS, you should absolutely snag Soulver: it is inexpensive and invaluable.