THE BEST WORDPRESS CALCULATOR PLUGIN

Easily Create Interactive Calculators

Create custom calculators in minutes
Display calculators anywhere on your site

Generate more leads and higher revenue
Get dozens of calculator templates

The Feature-Packed WordPress Calculator Plugin You Can Trust

Formidable Forms is the WordPress calculator plugin you can depend on. Transform your site into a lead generation machine with our user-friendly calculator builder.

Calculated Form Fields

Easily create forms that automatically calculate anything you want.

Drag & Drop Calculator Builder

Add calculators to WordPress with our easy drag and drop form plugin.

Advanced Math Calculations

Perform calculations inside forms or dynamically anywhere on your site.

Visual Calculator Styler

Ensure your calculators match your site with our intuitive visual styler.

eCommerce Price Calculators

Input item pricing and create eCommerce solutions with ease.

Display Calculated Data with Views

Show calculation data dynamically on your site without any PHP knowledge.

Mobile-Friendly, Responsive Calculators

Create sleek calculators for every screen size on your WordPress website.

Calculator Templates for Instant Forms

Use online calculator templates to get started in just a few clicks.

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Create Powerful Calculators for Any Industry

Easily build business calculators for finance, insurance, real estate, software, fitness and much more. The best part? Our calculator templates are ready to do the hard work for you.

Get started with the most flexible calculator plugin for WordPress.

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Example of calculators built with Formidable Forms.

Popular WordPress Calculator Examples

Formidable Forms is the WordPress calculator plugin you can depend on. Transform your site into a lead generation machine with our user-friendly calculator builder.

Car Payment Calculator Template

Calculate monthly payments with an easy auto loan calculator.

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Sample Size Calculator Template

Find out how many people need to respond to a survey to produce statistically significant results.

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Amortization Calculator Template

Estimate monthly mortgage payment principal and interest amounts.

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BMI Calculator Form Template

Calculate BMI (body mass index) to help clients improve health & fitness.

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Simple Mortgage Calculator Template

Optimize any real estate website with this responsive mortgage calculator!

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Pay Raise Percent Calculator Template

Enter a wage before and after a raise to find out how large your raise was.

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Volume Calculator Template

Input the dimensions of your object into the calculator to easily determine its volume.

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Age Calculator Form Template

Get an age calculator that tells you your age down to the day!

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Compound Interest Calculator Template

Calculate total compound interest on an investment or loan.

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Final Grade Calculator Template

Calculate the grade needed on an exam to get the desired final score.

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Pregnancy Due Date Calculator Form Template

Calculate the number of days until the baby due date.

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WooCommerce Product Configurator

Calculate the total value of a WooCommerce product with add-ons and style options.

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Shipping Date Calculator Template

Calculate the estimated delivery date for a package using transit time and processing time.

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Fuel Cost Calculator Template

When going on a trip it is nice to know how much fuel will cost. This calculator is very helpful in budgeting for a road trip.

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Gas Buddy Trip Calculator Form Template

When going on a trip with a buddy, it is nice to know how high the cost will be when splitting it between multiple people.

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Vacation Request Form Template

Let employees request vacation time with this online vacation request form template.

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Car Towing Cost Calculator

Collect essential details from users to calculate car towing costs efficiently.

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Conversion Rate Calculator

Find out the percentage of people are making purchases with this quick and easy lead magnet conversion rate calculator.

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Credit Card Repayment Calculator

Let visitors know how long it would take to get out of debt. This quick and easy credit card repayment calculator is a great way to generate leads.

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Celsius to Fahrenheit Calculator Template

Easily switch between Celsius and Fahrenheit with our versatile temperature converter.

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Trip Price Calculator Template

Gather necessary details from users to calculate trip costs swiftly and accurately.

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Fundraiser Order Form Template

Make online fundraising a breeze and help volunteers raise money for your nonprofit.

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Bakery Order Form Template

Boost sales and eliminate paperwork with this simple bakery order form.

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GKI Calculator Template

Collect relevant data from users to calculate the GKI, aiding in the assessment of glucose and ketone levels.

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Price Quote Calculator Template

Gather necessary data from clients to calculate and provide accurate price quotes for your services.

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Solar Battery Bank Calculator Template

Efficiently estimate the optimal battery bank size for your solar system based on energy usage and battery specifications.

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Check Request Form Template

Level up business operations with the check request form! Request a check to pay bills or make purchases from your business accounts.

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Solar Load Calculator Template

Calculate the total energy consumption of your home or business to determine the required solar panel capacity for optimal performance.

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Rule of 72 Calculator Template

Estimate the time it takes for an investment to double or calculate the required interest rate for doubling it.

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Net Promoter Score (NPS) Survey Form Template

Collect valuable feedback to increase customer satisfaction.

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Board and Batten Wall Calculator Template

Gather project-specific details from users to calculate board and batten wall requirements.

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Sales Tax Calculator Template

Calculate your sales tax rate, pre-tax price, and after-tax price with ease using our comprehensive sales tax calculator.

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Area Calculator Template

Find the area of a square, rectangle, circle, or a triangle with a 90° angle using our Area Calculator Template.

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Fundraising Donation Form Template

A Fundraising Donation Form collects contributions for charitable causes, allowing donors to provide essential support to meaningful projects.

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Daily Calorie Intake Calculator Template

Calculate the daily calorie intake required to reach fitness goals.

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Length Conversion Calculator Template

Convert lengths across different units of measurement.

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Pay Raise Calculator Template

Easily calculate what your salary will be after a pay raise.

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Inventory Form Template

An Inventory form template streamlines the tracking of stock levels and items. This form helps maintain accurate records, optimize supply management, and ensure efficient operations in any organization.

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Paycheck Calculator Form Template

Find your salary, daily, weekly and monthly wages based on hourly rates.

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Square Root Calculator Template

This calculator is great for solving square roots, which are notoriously difficult to calculate.

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Percentage Calculator Template

Find a specified percentage of an entered number.

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Tip Calculator Form Template

Calculate a tip whether splitting the bill or paying alone.

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YouTube Money Calculator

Use this lead magnet to tell visitors how much money they can make via YouTube. This is the ad revenue calculator for you.

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Raffle Entry Form Template

The Raffle entry form template provides a convenient way to create and manage tickets for fundraising events. This template ensures clear identification of each ticket, helping organizers track sales and manage draws effectively.

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Construction Loan Calculator Form

Utilize this calculator to swiftly assess the type of loan you may be eligible for and estimate the monthly payments for an initial interest-only loan.

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Statistical Significance Calculator

Calculate the statistical significance and P-value with this calculator.

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Debt to Income Ratio Calculator Form Template

Check for a healthy debt to income ratio before starting a loan.

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Life Insurance Calculator Template

Offer accurate life insurance estimates with this calculator.

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ROI Calculator Form Template

Estimate the profit or loss on an investment as a simple percentage.

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High School Calculator Template

A quick and easy form that can calculate a GPA in a matter of moments.

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Savings and Investment Calculator Form Template

Estimate profit from an investment or savings account.

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Expense Reimbursement Form Template

A form that can allow you to easily gather expense reimbursements in any setting.

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Time Sheet Template

An effective way of keeping track of employee hours each week.

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Student Budget Calculator Template

This handy student budget calculator will help students figure out expenses and income while attending a university or college.

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Margin of Error Calculator Template

Use this calculator to find the margin of error.

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Shelf Life Calculator

Calculate the shelf life of any food product with this calculator.

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DoorDash Weekly Earnings Calculator Form

This template is crafted to help DoorDash drivers efficiently track and calculate their weekly earnings. It features fields for inputting delivery details, tips received, mileage, and other relevant expenses.

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Instant Estimate Form Template

Provide prospective clients an instant estimate requesting your services.

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Youth Sports Registration Form Template

The Youth Sports Registration Form streamlines enrollment, gathering essential information for a safe and fun experience for young athletes.

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Deadline Calculator Template

Calculate deadlines in seconds. Add or subtract days from a date to calculate a new date.

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T-Shirt Order Form Template

Let customers select and order multiple t-shirts in the colors and sizes the want.

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Blood Alcohol Content Calculator Template

Collect necessary information from users to calculate Blood Alcohol Content.

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Cubic Yard Calculator Template

Gather input data from users to calculate cubic yardage quickly and accurately.

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Personal Budget Planner Form Template

Easily track income, expenses, and savings to manage your finances effectively

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Deposit Form Template

Issue a receipt for funds accepted through cash deposit, checks, money order, and cashier’s check.

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A/B Testing Calculator

Quickly analyze A/B test outcomes with our calculator.

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Free Estimate Form Template

Whether you're in construction or any industry, use this template to generate the estimated cost for your customer's needs.

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Drywall Calculator Template

Collect project-specific details from users to calculate drywall requirements efficiently.

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Advanced Mortgage Calculator Template

Get an advanced, in-depth financial analysis on a new mortgage.

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All the Calculated Form Fields You Need

Creating a form with calculated fields has never been so easy. Formidable forms has dozens of form field types to help you build calculators however you choose. Form elements range from radio buttons and sliders to total fields and product fields - all working together flawlessly.

Supercharge Your Lead Generation Strategy

A calculator could be one of the biggest lead magnets on your WordPress site. And since Formidable is also a form builder, you can handle all your WordPress forms within a single plugin.

Graphic depicting capturing leads with Formidable Forms.

Start Building Online Calculators Today

Formidable Views is the only WordPress tool that can help you do it all. Collect data with powerful forms, then display that data fast and beautifully with Views.

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Does What Other Calculator Plugins Can’t

The problem with most WordPress calculator plugins? They do just one thing. Formidable Forms is a powerful form builder where calculators are only the beginning.

With a giant library of plugin templates and unlimited customizations, it's easy to see why 300,000+ businesses have given us a 94% satisfaction rating.

Fast & Easy Calculator Building

With Formidable, creating calculators is easy. Our drag and drop form builder allows you to create calculators with just a few clicks - no coding required.

Stylized image depicting how easy it is to add fields to a form with Formidable Forms.

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Advanced Data Control

Run calculations and use them! Visually display your data however you want with Formidable Views and Graphs. Create custom reports, dynamic member profiles, and much more, all in real-time.

Ready-to-Go Calculator Templates

Start with a template, then make it your own with a simple drag-and-drop builder. Create instant quotes, cost calculators, retirement calculators, loan calculators - we cover all the basics so you can finish in just a few clicks.

Stylized image depicting how templates make creating forms with Formidable Forms faster.

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All the Integrations You Need

Formidable Forms integrates with all the top platforms. Connect your favorite add-ons: payment platforms, email marketing services, CRM's, automation, and more.

Simple or Advanced Calculators - You Decide

With Formidable, you can calculate more than just interest rates. Create simple quote calculators and cost estimates with addition and multiplication functions.

Or ramp things up with more advanced math calculations to build anything you can imagine. Build websites the way you want.

Stylized image depicting how Formidable Forms can be used o create a life insurance or length conversion calculator.

More Than Just a WordPress Calculator Plugin

Powerful online calculators are just the beginning. Formidable Forms comes with tons of other features that will help you create whatever you can imagine. See for yourself why our calculator form builder is loved by everyone from developers to independent businesses.

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Try Formidable Forms Risk-Free for 14 days

Trusted by over 300K+ users

The people have spoken. Their approval has us seeing stars - and we couldn't be prouder. With validation like this, Formidable Forms is one of the highest-rated WordPress plugins out there.

The plugin works perfectly. It offers you many configuration options and is very well structured. But the best thing about Formidable is the technical support. I needed a really special feature, and thanks to them I achieved it. They have gained a customer for life.

raulolivella

I've been using Formidable Forms and Views and have been delighted with the many ways I've been able to utilize them. Using Views to display form submission data on the front-end has been huge for me. And, the few times I've gotten stuck, I've reached out to support and have received actual, helpful responses.

pmterp

FF has transformed the way I approach form creation and management on my website. The visual editing capabilities give me intuitive and seamless design processes that save me time and effort. Next to that, the ease of creating multi-step forms that have better conversion rates makes setup a breeze. The overall flexibility and efficiency of Formidable Forms have significantly improved my workflow and site user experience.

zufo

I have been using the pro plugin of Formidable Forms for many years now. I can’t think of anything else that comes close to the quality and intuitiveness of this plugin for WordPress!

Tilasmi

I’ve been using formidable for almost ten years, on over a hundred websites. It’s the most refined form builder with the most flexibility than any other I’ve used. Plus, it’s just beautiful and just works.
The support framework our this plugin is top notch!

ddpweb

I have been using formidable forms for many years now and have built both small and large scale web applications with it. I have nothing but good to say about all my experiences with both the product and support.

tthayer

Frequently Asked Questions & Resources

Do you have a question about Formidable Forms? See the list below for our most frequently asked questions. If your question is not listed here, please contact us.

Are Formidable calculator forms for me?

If you run a WordPress site and you want to publish online calculators, you should use Formidable. The biggest advantage of using Formidable? It does more than just calculators. It can be used for contact forms, reports, landing pages, and everything else a drag-and-drop form builder can do.

What do I need to use Formidable Forms?

All you need is a self-hosted WordPress website. You can also install Formidable Forms on your client's WordPress sites if you are a developer. Unfortunately, our plugin does not work on non-WordPress sites.

Do I need coding skills to use Formidable Forms?

Absolutely not. You can create and manage forms without any coding knowledge. If you do have coding skills, you'll be able to tweak your forms in more detail. But coding is not needed to get the most out of our plugin.

How do I create a calculator in WordPress?

Creating a calculator is easy when you use Formidable. The best way to get started is by using one of our templates. From there, you can see how our calculated form fields work together to output calculations.

That may sound like a whole lot of math, but if you are reading this, we are certain you can handle it with ease!

How do I add a calculator to my WordPress site?

Adding a calculator to your WordPress site is just as easy as copying and pasting. With Formidable shortcodes, you can place a calculator anywhere on your site. That means you can place them on a page, post, sidebar, footer, or any widget area.

How do I create a calculator widget using WordPress?

Creating a calculator widget with Formidable could not be easier. All you need is a theme with a widget area. From there, just take a form shortcode and copy it into a text or HTML widget. That's really all there is to it!

Do Formidable calculator forms integrate with WooCommerce?

100% yes. This is one of the biggest advantages of using Formidable to complement your WooCommerce setup. Formidable Forms can effectively replace each and every WooCommerce extension - saving you hundreds of dollars every year.

Because Formidable can fully replace any cost calculator plugin, it works as a cost calculator builder that can store product info and perform field calculations.

Why are calculators great for lead generation?

Calculators are engaging and interactive tools that keep people on your site. Users also love tools that make their life easier. Calculators make them feel like they’re getting a free service that would normally cost them money.

And with Formidable Forms, you can create calculators that also collect contact information. This could be used to generate hard leads (quote calculators) or build soft leads by adding users to your email list.

How do I design an effective calculator?

When designing an online calculator, the best place to start is with a template. Formidable’s templates are simple, sleek, and fit into any WordPress theme.

When designing an online calculator you also want to think carefully about your audience and the ways they will be using your calculator. Pretty soon your problem will shift - you'll have too many effective ideas and not enough time! Good thing our templates take only a few minutes to publish on your WordPress site!