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Calculations

Add a field that computes a value from other answers in real time.

A calculation field shows a number worked out from other fields — a price, a score, a total — and updates live as people fill the form.

Writing a formula

Reference other fields by their name and combine them with +, -, *, / and parentheses. Standard order of operations applies.

Formula
price * qty
(subtotal + shipping) * 1.05
base + (nights * rate)
  • Add a prefix or suffix to format the result, e.g. $ or pts.
  • Calculations are read-only and never required — they’re computed, not typed.
  • Later calculations can reference earlier ones, so you can build totals in steps.
Note

If a referenced field is empty or not a number it counts as 0, and dividing by zero yields 0 — so the form never shows a broken result. The builder warns you if a formula references a field that doesn’t exist.

Tip

The calculated value is submitted with the form, so you can use it in notification emails, push it to an integration, or use it as a conversion value.

Still need help?

A dedicated support form is coming soon. In the meantime, jump back into the product or reach the team from the contact page.

Open the builder Contact page