Done!
You have successfully tested the calculator on Weblium. Ready to add it to your website?
Longer time on site with interactive calculators compared to static forms.
Completed actions and conversion growth after introducing interactive forms.
Users say they prefer interactive experiences over static web pages.
Your website can do more than just collecting contacts or user requests. A calculator helps visitors clarify needs, instantly get personalized estimates, and turn them into your customers with confidence.
Boost Conversions
When visitors receive tailored estimates, they are far more likely to complete a form or submit an inquiry.
Extend Time on Site
Interactive calculations encourage visitors to stay on the page longer and move closer to making a purchase.
Generate High-Quality Leads
Customers who complete their own calculations become more motivated and ready to proceed.
Automate First Contact
The calculator automatically handles common pricing questions, reducing manual work for your team.
Accelerate Decisions
Quick estimates allow customers to instantly assess their budget and take action sooner.
Create a Better Experience
Data-driven results increase trust and create a smoother, more transparent customer journey.
Unlike standard contact forms, a calculator turns your site into an interactive experience and delivers real value to visitors.
Users select their options and input key details (area, number of lessons, format, etc.)
The system calculates the price estimate or outcome in real time
These personalized results encourage the user’s action: buying, booking, or submitting a request.
Main Use Cases in Different Industries
An interactive calculator works for almost any business, helping potential customers quickly receive personalized results and place an order or make a booking.
🏠 Repair cost calculation
Get a preliminary cost estimate
Construction and Renovation Services
Construction projects involve many variables, and customers usually want an approximate estimate before making a call.
What to calculate:● area in square meters (m²) or linear meters● type of materials or surface● complexity level● project timeline● extra options (demolition, cleaning, technician visit)● work stages (full-service projects or complex projects).
● area_m2 – total space (m²)● price_per_m2 – base price per 1 m², for example, $400● complexity_factor – renovation difficulty● extra_option – whether demolition is required.
Formula:(area_m2 * price_per_m2 * complexity_factor) + extra_option
🧹 Calculate the cost of cleaning
Get a preliminary cost estimate for services
Service Companies and Contractors
Cleaning services, installations, equipment maintenance, and other service-based businesses often need to reduce manual calculations while helping customers make faster decisions.
What to calculate:● service packages● level of complexity / scope of work● number of hours or days● additional options (technician visit, materials, warranty)● location or service area.
● hours – number of hours● hourly_rate – price per working hour● complexity_factor – level of complexity● extra_options – whether professional equipment is required.
Formula:(hours * hourly_rate * complexity_factor) + extra_option
If you need more options, you can add extra questions like “Additional supplies” or “Quality guarantee” as radio buttons (single selection) with similar pricing logic.
🚚 Calculate transportation costs
Get a preliminary delivery cost estimate
Transportation Services
Most customers want to know the cost of a ride or delivery right away – without making a phone call. A calculator helps them quickly estimate the route, luggage, and tariff while reducing the number of inquiries sent to customer support.
What to calculate:● pickup and drop-off locations● distance / zone● vehicle type● cargo weight / volume● additional services (packing, insurance, movers’ assistance).
● distance_km – distance in kilometers● vehicle_rate – price per kilometer● weight_factor – weight coefficient● extra_services – whether insurance is required.
Formula: (distance_km * vehicle_rate * weight_factor) + extra_services
Similarly, you can add other options such as “Loading/Unloading” or “Packing” as extra services.
🛋️ Calculate the cost of furniture
Get a preliminary cost estimate for your order
Custom Furniture
Customers want to see the cost based on their dimensions and chosen materials. A calculator provides a budget estimate, helps configure options, and increases the likelihood of completing an order.
What to calculate:● dimensions (width / height / depth)● material● configuration● additional elements (hardware, lighting, handles)● design / color.
● width_cm – width (cm)● height_cm – height (см)● depth_cm – depth (см)● material – material (price per 1 cm³)● polishing – whether polishing is required.
Formula:(width_cm * height_cm * depth_cm / 10000 * material) + polishing
You can also add other options as radio buttons, such as “Lighting,” “Hardware,” and more.
How to Create a Form Calculator in 4 Simple Steps
A calculator works by processing the values entered by users. You define variables, build a formula, and instantly display the result on your website.
Create a form.
Add a form with several fields using the “Form” block in Weblium.
Add parameter fields.
For example, when calculating the cost of doors, you might want:● width● height● material – price per m²● additional options – handles, window sills, installation, extra services.
Assign variable names.
Each field must have a variable name. In this example: width, height, material_price, options_price.
Create the formula.
Use basic math operators: +, -, *, /, ().
Basic formula example for doors: (width * height * material_price) + options_price