Build and customize interactive web calculators for your website with ActiveCalculator. Create a custom calculator and engage your users.
Written by Abdul Moiz
Creating a custom calculator for your website is a straightforward process with ActiveCalculator. In this guide, we demonstrate how to create an online calculator that perfectly captures your brand and serves your customers' needs.
Jumpstart your journey to create a calculator by watching our concise 2-minute demo. This step-by-step visual guide is designed to help you make an online calculator with ease and confidence.
To create your own calculator, begin by logging into ActiveCalculator. If you're new here, quickly set up an account and get ready to customize calculator options to your liking.

Upon login, you're set to create a calculator that reflects your brand. Click "Create calculator" to start with a fresh template on your dashboard.

On the Element tab, find all the tools you need to make an online calculator. For an ROI calculator, select the "Numeric Field" to start adding inputs.

For customizing calculator settings, simply click the element you want to adjust on the right sidebar.

Customize calculator labels by entering "Amount Invested" as the title for your first numeric field.

To ensure data accuracy, set the minimum at 0 and cap the maximum at 100,000 for the investment amount.

Enhance the user experience by customizing calculator fields with a "$" prefix to represent currency.

Follow the previous steps to create an online calculator field for "Amount Returned," repeating the process of labeling and configuration.

Click on the "Result Field" to add it to your layout.

For your ROI calculation, update the result field to "ROI" and append a "%" postfix for clarity.

When customizing calculator variables, rename "Amount Invested" and "Amount Returned" to "amt_invested" and "amt_returned" respectively in the formula tab.


To accurately calculate ROI, add a new custom variable with the formula: (@amt_returned - @amt_invested) / @amt_invested * 100.

In the result element settings, choose "ROI" from the dropdown to link it to the custom variable you’ve created.

In the Design tab, browse through the gallery and select the "Moonlit Glacier" template or create your own design.

After customizing your calculator, click "Save" and use the "Publish" toggle to make your calculator available online.

To create calculators for websites, simply copy the embed code from the "Embed in web page" tab and paste it into your website’s HTML.


Creating calculators for websites is made effortless with ActiveCalculator. Whether you're looking to create an online calculator from scratch or need a customizable calculator that starts from a template, our platform is designed to meet your needs. Need help or have questions on how to create an online calculator? Contact us at hello@activecalculator.com.
When using ActiveCalculator to build an online calculator, there are several user-controlled aspects that can enhance the effectiveness and user experience of your tool. Here are some practical tips to consider:
By implementing these tips within the scope of ActiveCalculator’s builder, you can create an online calculator that is not just a functional tool but also an asset that contributes positively to the user experience on your website. A well-designed custom calculator can be a powerful way to engage and retain your audience while providing them with valuable information they need to make informed decisions.
An interactive calculator is a dynamic tool that can be integrated into a website, allowing users to input data and receive real-time, customized results. When you build an online calculator, you're creating an engaging feature that can simplify complex calculations for users, offering them immediate answers and insights tailored to their personal or business needs.
Integrating an interactive calculator on your website can significantly enhance user engagement and provide several key benefits:
Absolutely! You can create an online calculator using our free plan, which is a great starting point for small projects or for those who want to explore the functionality of ActiveCalculator. No credit card is required to get started, making it an accessible option for everyone looking to make a calculator.
There are countless types of web calculators that you can build online, each serving different industries and purposes. Examples include:
Each of these examples can be customized to fit the specific needs and branding of your website, making them a versatile tool for engaging and assisting your users.
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