Calculation & Pricing Overview

The Formula step defines how the final product price is calculated. Inputs from Step 1 (Form fields) are combined with optional custom variables, lookup tables, and formulas to determine the dynamic price shown to the customer.

This allows you to create flexible pricing models based on measurements, selected options, quantities, price matrices, or custom logic.

Formula step tabs

• 4a. Custom variables

• 4b. Lookup tables (Premium)

• 4c. Formula

• 4d. Calculation display (Premium)

How the calculation works

The calculator follows this flow:

1. The customer fills in fields (Step 1)

2. Each field provides a numeric value

3. These values are combined in a formula

4. The formula returns a final calculated price

The result of the formula is applied dynamically to the product price.

When to use a custom formula

Use a custom formula when:

• Pricing depends on measurements or quantities

• Multiple options affect the final price

• You need full control over pricing logic

• You want to apply rounding or conditions

Custom formulas give you complete flexibility over how prices are calculated.

What the calculation can include

A formula can reference:

• Values from form fields (number inputs, dropdowns, checkboxes, etc.)

• The product price or variant price

• Custom variables (4a)

• Lookup tables via lookup2d (4b, Premium)

• Helper functions such as rounding

• Conditional logic (4c, Premium)

All values are evaluated in real time as the customer interacts with the calculator.

Preview vs live pricing

The calculation step includes a price preview for testing purposes.
This preview helps you validate your formula, but the final price displayed on the live store depends on your Shopify theme and pricing setup.

💡 Tip:
Keep pricing logic as simple as possible and expand gradually. Complex pricing is easier to maintain when built step by step.