Unlimited surveys & questions • 1000 responses • Advanced features

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The online calculator builder to boost your
traffic  leads sales conversions engagement

Or make it simple:

Helena Videtic - Dow JonesConference Assistant
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Your service helped us to substantially optimize the development and evaluation of our delegate questionnaire The possibility to individualize the questionnaire with our Dow Jones logo and to link it to our website is very useful.
Shelly Rowett - Virgin MediaService Experience Analyst
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We have used FreeOnlineSurveys.com for 3 years to collate feedback from our customers on the email service we provide. The website is easy to navigate and as an end user I found it very efficient when pulling results weekly and monthly.
Gail Arlegui - Air CanadaSuccession Manager
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Not only is this tool very easy to use, but it has served many purposes at work — surveys, polls, online registration, online forms, and online exams. It has definitely been a great communication and tracking tool.

Calculator Builder

Effortlessly build calculators with no code

Our Online Calculator Builder is designed with simplicity in mind. With our intuitive What You See Is What You Get” (WYSIWYG) editor, you can create custom calculators without ever needing to write a single line of code.

As you make changes, you can instantly preview your calculator to see how it will appear. This visual feedback loop ensures you’re in control of the calculator’s look and functionality.

Field Types

Custom calculators that tick all the boxes

Online Calculator Builder For Boosting Engagement

Sliders

Define a range and allow visitors to select a numeric value along a slider.

Checkboxes

Enable visitors to make single or multiple selections from a list of options.

Numeric

Visitors can input numeric values, choose from Decimal, Integer, Monetary and Age.

Dropdowns

Create a list of hidden answer choices, which visitors can click to reveal.

Contact forms

Collect contact information such as names, email addresses and phone numbers.

Picture choice

Add images to multiple-choice questions in your online calculators.

Formula Builder

Create complex formulas in a few clicks

You don’t need to be a mathematician to create calculators with FreeOnlineSurveys. Our drag-and-drop editor means that building complex formulas is as simple as possible.

Whether you need basic operations like addition, subtraction, multiplication, and division, or you’re dealing with advanced functions like square roots, logarithms, or IF statements, our formula builder has you covered.

Our online calculator builder includes:

Simple formula builder

Bring your calculator to life with a single formula expression, using both simple and advanced operators & functions.

Excel-style builder

Import your own datasets and build more complex formulas using functions that reference multiple cells, rows or columns.

Real-time validation

Worried about formula errors? Our builder offers real-time validation, helping you identify and correct errors as you build.

Responsive design

Our custom calculators perform perfectly on any device. Preview designs on desktop, mobile, or tablet any time.

Instant results

Display results to visitors as they enter data or adjust parameters, side-by-side with your custom calculator.

Gated results

Collect contact information such as names and email addresses before displaying calculator results to visitors.

Conditional messages

Craft custom messages to be displayed alongside results that trigger based on users' input values and scores.

Embed calculators

Embed calculators on a landing page with a simple line of code and fully customize styles to match your website design.

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