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Real-time calculations inside your forms

Build formulas that reference other fields, perform arithmetic, apply conditional logic, and display live results. Order totals, pricing configurators, score calculators — all without a spreadsheet.

Formula editor with field references

Write formulas that pull values from any field in your form. Reference fields by name, build expressions visually, and see results update as respondents fill out the form.

Formula
= qty × price
References 2 fields

Arithmetic & logical operators

Addition, subtraction, multiplication, division, percentages, rounding, min, max, and conditional IF/ELSE logic. Everything you need to build calculations of any complexity.

+
×
÷
%
min
max
avg
Arithmetic, comparison & aggregation

Conditional calculations

Apply different formulas based on field values. If quantity exceeds 100, apply a bulk discount. If region is EU, add VAT. Dynamic pricing that adapts to every response.

IF score > 80
THEN "Pass"
ELSE "Fail"

Live result preview

Respondents see calculated values update in real time as they fill out the form. No submit-and-wait — instant feedback that builds confidence in the final total.

qty 3
price $15.00
total $45.00
Live

Number formatting

Display results as currency ($1,234.56), percentages (85.5%), decimals, or whole numbers. Automatic locale-aware formatting so results look professional everywhere.

Currency (USD) $1,234.56
Percentage 85%
Thousands 1,000
Currency (EUR) €99.99

Calculated totals for payments

Connect calculated fields to payment fields for dynamic pricing. Quantity × unit price, minus discount, plus tax — the payment amount updates automatically.

Widget A
×2 $10.00
Widget B
×1 $25.00
Subtotal $45.00
Tax (8%) $3.60
Total $48.60

A full formula engine, not basic math

Most form builders limit calculations to simple addition. formcel gives you a complete formula engine with conditional logic, field references, and real-time preview — on every plan.

Use cases

Order totals & subtotals
BMI & health calculators
Cost estimators & quotes
Grade & score calculators
Tax & fee calculations
Dynamic pricing configurators

Let your forms do the math

Build formulas, reference fields, and show live results. Calculations that work as fast as your respondents can type.