Node Calculator guide

Getting started with Node Calculator

Node Calculator is a calculator drawn as boxes and wires. Each box has a name and a formula, and the answers update as soon as anything changes.

Open Node Calculator

Start from the example

The first time, Node Calculator opens an example: price and qty values, a subtotal formula, a total output that adds tax, and the vat between them. Change 3 in qty and watch the total change. File, Load the example brings it back.

Add and wire nodes

Right-click a node to rename it, change its type, duplicate it or delete it. Right-click a wire to delete it.

1. Choose + Value, + Formula, + Output or + Note, or right-click the canvas.
2. Click the name at the top of a node to rename it.
3. Type a value or a formula in the box. A formula uses other nodes by name, such as price * qty or tax(subtotal, 8). Units, currencies and dates work as in Calculator.
4. Drag from a node’s right dot to another node’s left dot to connect them.

Save your work

Your graph is kept on this device between visits. Save to Files saves it as a project; File, Open project… opens one again, and Save a copy… keeps a second version.

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