Calculator: fill in two numbers, the third appears
Three numbers that belong together: fill in two, the third appears.
80 euros in dollars, 1:50 on the drawing, or how much stock for 2 mL at 50 µM.
The rule that makes it a calculator and not a form: the empty field is the one being worked out. Type two numbers and the third shows up in teal as you type. Tab or Space moves on to the next field and empties it, so correcting a number is one key, not a selection.
Currency uses the European Central Bank’s daily rates. They are fetched when they are older than twelve hours and kept on your Mac; offline, the pop-up says which day they are from. Nothing else touches the internet, and your numbers never leave the Mac.
Put your four most-used calculations on ⌘1 to ⌘4 in Settings › Calculator. 1,5 and 1.5 both read as one and a half.
- Currency, percent, rule of three, scale 1:n
- Length, area, volume, weight
- c·V = n, c·V·M = m, C1·V1 = C2·V2
- Enter copies the answer
The app has a short tutorial for this. In the settings window, click Try it on the spoon’s page or press Command 5 ⌘ 5 for Tutorials.
Pairs well with
Caffeine
UtilityYour Mac and the screen stay on until you press again.
Your screen doesn’t go black in the middle of a talk.
Connectivity
UtilityWi-Fi off and on, and all your VPNs in one menu.
When the internet hangs, turn Wi-Fi off and on again.
App Launcher
UtilityOne shortcut, one letter, and you are in the app.
T for Terminal, S for Safari, F for Finder — without reaching for the mouse or the Dock.