Keyboard Shortcuts
coolca.lc can be used entirely from the keyboard. The number keys, operators, Enter and Backspace work as you'd expect, and every other button has a shortcut too: $ for money, K for thousands, M and R for Memory presets, Space for Solvers. Press ? on the calculator at any time to see the list.
The five worth learning first
- Esc clears everything, and C clears just the last thing you typed.
- $ marks the number you're typing as money.
- K multiplies it by 1,000; press again for millions.
- Ctrl Z undoes anything, even a clear.
- Ctrl C copies the result, formatted and ready to paste.
On a Mac, use ⌘ wherever this page says Ctrl.
Typing and calculating
| Action | Keys |
|---|---|
| Numbers | 0–9 and . (the number pad works too) |
| Add, subtract | + - |
| Multiply | * or x |
| Divide | / |
| Percent | % |
| Equals (again to repeat) | Enter or = |
| Delete last digit | Backspace |
| Clear the last entry | C or Delete |
| Clear all | Esc |
| Mark as money | $ |
| Change sign | S or F9 |
| Square root | @ |
| Power | ^ |
| Parentheses | ( ) |
| Thousands, then millions, billions | K |
| Number format | N |
In regions that write decimals with a comma, the , key types the decimal. Elsewhere it does nothing, since thousands separators are added for you.
Editing, copying and pasting
| Action | Keys |
|---|---|
| Undo | Ctrl Z |
| Redo | Ctrl Shift Z or Ctrl Y |
| Copy the result | Ctrl C |
| Paste a number, calculation or list to add up | Ctrl V |
| Show or hide the Log | L |
| Show this list on the calculator | ? |
Memory presets
| Action | Keys |
|---|---|
| Save into a preset | M then 1–5 |
| Recall a preset | R then 1–5 |
| Clear a preset | Esc, then M then 1–5 |
More about Memory presets.
Solvers
| Action | Keys |
|---|---|
| Open or close the Solvers list | Space |
| Move through the list, pick one | ↑ ↓, then Enter |
| Change category (list open) | ← → |
| Switch between Memory and Solver presets | Tab |
| Store in or recall a Solver slot | M or R then 1–5 |
| Previous or next page of slots | Shift ← Shift → |
| Clear all of a Solver's values | Shift Esc, then Esc to confirm |
More about Solvers.
Questions
Why do Tab and Space do something different here?
On most web pages, Tab moves between links and Space scrolls. The calculator is a tool rather than a page to read, so those big, easy-to-hit keys are put to work: Space opens the Solvers and Tab flips the presets row. If you've moved to a button with the keyboard, Space still presses that button.
I can't find the keyboard button on my phone.
It's hidden on touch-only devices, which have no keyboard to use it with. Connect a keyboard to a tablet and all of these shortcuts work.
Do shortcuts work while the Solvers list is open?
Yes. The arrow keys, Enter and Esc work the list; everything else keeps calculating as usual.