Building an Interactive Calculator

Calculators let your visitors get a personalized number like a mortgage payment, monthly savings, a quote estimate, an ROI - right inside your form.

They enter a few inputs, and a results panel shows the computed values instantly.

You can set this up manually or you can have our AI Copilot to the heavy lifting for you.

What a calculator is made of

Every calculator has three parts:

1. Inputs

   The fields the visitor fills in (a loan balance, an interest rate, a coverage amount). These are normal form fields.

2. Computed values

   The numbers you calculate from those inputs using a formula (for example, monthly_savings = current_payment - new_payment   ).

3. A results panel

   The styled box that displays the computed values you want to show.

You can show the results panel all on the same step, or at the end of your funnel.

The fastest way: ask Copilot

The quickest way to build a calculator is to ask the AI Copilot. Just describe what you want:

"Build a mortgage refinance calculator"

"Add a savings calculator that shows monthly and yearly savings"

Copilot creates the input fields, the formulas, and a results panel in one step, pre-filled with sensible defaults so it shows a realistic example on load.

You can then refine anything by hand.

Building one manually

1. Add your input fields

Add your input fields to a step.

Currency, number, percent, or slider fields work best for calculators. Give each a clear name.

2. Create your computed values

Open the Calculations panel and add your computed values.

For each value, write a formula using:

• Your field names
• Numbers
• The operators + - * /   
• Parentheses
• Built-in functions like mortgagePayment   

For example:

monthly_savings = current_payment - new_payment   

3. Add a Results block

Add a Results block from the step's "Add Field" menu and choose which computed values to display.

Mark the important ones as emphasis to render them as large hero numbers.

Live recompute

By default, the results update live as the visitor changes an input.

Move a slider, and the numbers change instantly.

You can turn this off per results panel if you'd rather the values only calculate when the visitor advances.

Showing results on a later step or the thank-you page

You don't have to show the results on the same step as the inputs.

To collect inputs across several steps and reveal the results at the end (a contact step or the thank-you step), use "Add results block" on that later step and pick which values to show.

Results always recalculate across every step, so a panel on the final step correctly reflects everything entered earlier.

Getting results into your CRM / webhooks

Every value you display in a results panel becomes a deliverable field.

Each one flows through to your webhooks, Zapier, LeadProsper, GoHighLevel, LeadProsper, and LeadByte just like any other field, and it's available as a {value_name}    tag for use elsewhere in the funnel.

You can:

• Rename the outbound key for each result (the "integration key")
• Turn delivery on or off per result with the "Send to integrations" toggle

Only the values you actually display are captured and delivered. Intermediate/helper calculations stay internal.

Styling the results panel

You can restyle the panel from the results panel's settings, including:

• Accent color for the figures
• Background
• Text color
• Divider lines
• Corner radius

You can also ask Copilot:

"make the results match my brand"

"dark background"

"rounder corners"

Tips

• Pre-fill your inputs with realistic defaults so the calculator shows a real example on load instead of zeros.
• Reference the same field/value names consistently in your formulas.
• Test on the live page and on any embedded version of your form, not just the builder preview.