Formulas are the logic engine behind your calculator. They take user inputs and automatically compute the results. Numio’s formula editor supports basic math, advanced functions, and conditional logic—giving you full control over how your calculator behaves.

1. Open the Formula Tab

Go to the Formulas tab in the builder.

2. Create a New Formula

• Click Add Formula

• Choose the output field this formula will control

• This opens the Formula Editor, which includes:

  • A variables list

  • A real-time validation checker

3. Build Your Expression

Each input you create comes with an auto-generated variable name.
Use these variables directly in your formula expression.

4. Preview and Test

Switch to Preview Mode to test your formulas in real time.
Enter example values and confirm the output behaves as expected.
If something’s off, the editor will flag issues like undefined variables or invalid syntax.