Using the Formula Builder

The Formula Builder is where you define how the final price is calculated. It allows you to write mathematical formulas using field values, product prices, and helper functions.

Formula editor

You can create formulas by:

• Typing directly into the editor

• Inserting variables using the field selector

• Pasting formulas from elsewhere

All formulas must result in a numeric value.

Supported operators

The following mathematical operators are supported:

• + Addition

• - Subtraction

• × Multiplication

• ÷ Division

• ( ) Parentheses

Parentheses are strongly recommended to control calculation order and avoid unexpected results.

Field selector

The Form fields dropdown allows you to insert available variables directly into the formula.
This includes:

• All fields created in Step 1

• Product and variant metafields

• Rounding functions

Using the selector reduces typing errors and ensures valid variable names.

Writing clear formulas

Best practices for writing formulas:

• Use parentheses to group calculations

• Keep formulas readable and structured

• Apply rounding at the end of the formula

• Avoid unnecessary complexity

Example

(product_price + width * height) * material_multiplier

Conditional formulas (Premium)
For advanced pricing logic, you can switch to conditional formulas. This allows you to apply different formulas based on conditions such as size thresholds or selected options.

Learn more → Conditional Pricing (Premium)

💡 Tip:
If a formula becomes difficult to read, consider splitting logic into simpler steps or using conditional formulas.