Add a calculator to your website
A loan payment, a cleaning quote, the cost of dental implants: visitors move a slider or tick an option and see the answer straight away. Start from a ready calculator, change the numbers to yours, paste one line of code.
- Free plan
- No credit card
- Works on any website
yourwebsite.com
The real calculator. Move the sliders and watch the payment change.
How it works
How to add a calculator to your website
Pick a starting point, make it yours, paste the code.
Start from a ready calculator
Loans and mortgages, home and moving, dental treatments, services, events and food, health and fitness. Or start from a blank one.
Put in your own numbers
Change the questions, prices and the formula behind each result. The preview works as you type, so you can try it like a visitor would.
Paste the embed code
Add your website, copy the code and paste it once. Change a price later and your site follows on its own.
Features
A calculator that brings you customers
Answers as they move
Results change the moment a slider moves or an option is picked. No Calculate button to press.
33 ready calculators
Mortgage, car loan, cleaning quote, wedding budget, calorie needs, dental implants and more, in six groups.
Results that become leads
Ask for a name, email and phone under the results, or before showing them. Use a simple form or one of your own forms.
Your own formulas
Add, multiply, round, IF rules and a loan payment (PMT). Show a single number or a range, like $2,400 to $3,100.
Questions people like
Sliders with a box to type in, dropdowns, picture cards, buttons, on/off switches and dates.
A next step
A heading, a line and a button under the results, to book a call, see prices or ask for a quote.
Your look
Your colours, fonts and corners, the results beside the questions or under them, and holiday looks for the season.
Easy on a phone
Big sliders and buttons that work with a thumb, and one column on a small screen.
Designs
Two ways to lay it out
The same calculator, shown the way that suits your page.
Side by side
Questions on the left, results on the right, so both stay in view on a computer.
Stacked
Questions first, results under them. Best in a narrow column.
Results panel
A coloured box for the main number, with smaller results under it.
Holiday looks
Christmas lights, Diwali lamps or Black Friday tags around the box, on the dates you pick.
Everything included
Everything in the calculator widget
Every design and setting you can use. Most are on every plan; the few that need a paid plan say so.
Questions
- Number boxes and sliders, with a value box people can type in
- Dropdowns, buttons, lists and picture cards, with a short note under each option
- On/off switches and dates
- Headings to split long calculators into parts
- Show a question only for some answers (paid plans)
Results
- As a number, money or a percent, with the decimals you choose
- A single number or a range from low to high
- One main result in the coloured panel, the rest under it
- Help text under any result
- Free: up to 6 questions and 2 results. Paid: up to 40 and 15
Leads
- A button under the results that opens a short form
- Or ask for details first, with the results blurred until they send
- Name, email and phone, or any form you built in WidgetPop
- Every lead in your Leads page, with the answers and results
- An email for each new lead
Your look
- Side by side or stacked
- Outline, filled or underline boxes
- Colours for text, sliders, the results panel and the button
- Nothing behind it, your colour, a gradient or a photo
- Holiday looks with garlands and corner art
Who it is for
Who uses a calculator
Lenders and brokers
A monthly payment from the price, deposit, term and rate, with a button to apply.
Dentists and clinics
The cost of implants, aligners or veneers, as a range, with a form to book a consultation.
Cleaners, movers and trades
A quote from rooms, extras and how often, so people know the price before they call.
Works everywhere
Add your calculator anywhere
Copy the embed code from your dashboard, then:
- WordPress
- Add a Custom HTML block and paste the code.
- Shopify
- Add a Custom Liquid section and paste the code.
- Wix
- Add an Embed Code element and paste the code.
- Squarespace
- Add a Code block and paste the code.
- Webflow
- Drag in an Embed element and paste the code.
- Any HTML site
- Paste the two lines where the calculator should appear.
Common problems
Calculator not working? Check these first
Most problems have a quick fix. Find yours below.
A result shows 0 or a dash
Check the formula uses the short names of your questions, exactly as they are written in each question's settings. The editor marks a name it does not know in red.
Visitors can't see the results
If you chose to ask for details first, the results stay blurred until the form is sent. Switch Collect leads to a button under the results if you want them shown straight away.
I'm not getting lead emails
Every lead is in Leads in your dashboard either way. Check the address under Email me each lead, and your spam folder.
Nothing shows on my website
Add your website in the Install tab, under Allow your website, then open the live page (not your builder's editor). Still blank? Right-click the spot, choose Inspect, and look for a [widgetpop] line in the Console tab.
Still stuck? Email [email protected] and we usually reply within a day.
Help center
Calculator guides
Step by step, with screenshots of the dashboard.
FAQ
Calculator widget: questions
How do I add a calculator to my website?
Create a calculator widget, start from a ready one or a blank one, put in your numbers and paste the embed code into your page.
Do I need to know formulas?
No. The ready calculators already have them. If you want your own, it works like a spreadsheet: price * rooms, or IF(rooms > 3, 50, 0).
Can I see who used it?
Yes, when you collect leads. Each lead comes with the answers they picked and the results they saw.
Is there a free plan?
Yes. Free calculators have up to 6 questions and 2 results. Paid plans allow up to 40 questions, 15 results and questions that only show for some answers.
Will it slow down my website?
No. It loads after your page, and the sums run in the visitor's browser.
More widgets
One account, every widget
Use them together on the same site, from the same dashboard.
Pricing
Start free. Upgrade when it pays off.
No credit card to start. Cancel any time.
Starter
/month
- 1 website
- Unlimited widgets
- Unlimited views
- Remove “Powered by WidgetPop”
- Email support
Pro
/month
- 3 websites
- Unlimited widgets
- Unlimited views
- Remove “Powered by WidgetPop”
- Priority email support
Agency
/month
- 10 websites
- Unlimited widgets
- Unlimited views
- Remove “Powered by WidgetPop”
- Priority email + chat support
Pick any of our widgets on every plan. Analytics included.
Prices in US dollars. Tax, where it applies, is added at checkout.
Add a calculator to your site
Free plan, no credit card. Start from a ready calculator in a minute.
Create your free widget

