CalcBuilder Tutorial

The Number field is a numeric input. It is what you use for money, quantities, percentages and measurements — anything you will do arithmetic with.

Key settings

• Decimals (field → Preferences) — how many decimal places the visitor may enter; the thousand/decimal symbols come from the calculator’s Preferences tab.
• Prefix / Suffix — e.g. € or kg shown next to the box.
• Min / Max (Advanced) — validated before the calculation runs.
• For a currency box that formats as you type, use a Text field with a money mask instead.

In code

Read it as $variable. It arrives as a string, so cast it: $total = (float) $price * $qty;

Part of the Form Fields reference. All types are demonstrated together in the Field Types Showcase.