- Use a WordPress Calculator Plugin
Install a plugin like Formidable Forms, Calculated Fields Form, or WPForms.
These plugins let you create forms with input fields and apply formulas to calculate values dynamically.
- Create Input Fields
Add fields for dimensions depending on the shape (e.g., length, width for rectangles, radius for circles).
Example:
Rectangle: Length (L), Width (W)
Circle: Radius (R)
- Add Calculation Logic
Use the plugin’s built-in calculation functions.
Example formulas:
Rectangle: Surface = L × W
Circle: Surface = π × R²
- Style the Calculator
Customize the look using your theme's CSS or plugin styling options.
Ensure it’s responsive and accessible on mobile devices.
- Publish the Calculator
Embed the form on any page or post using a shortcode.
You can also check out a live example here: Calculateur de Surface.
Top comments (5)
Absolutely! Creating a custom calculator in WordPress is straightforward with the right plugin. Here's how you can do it:
WPForms: A user-friendly drag-and-drop form builder with a Calculations addon. It offers pre-built templates like mortgage calculators and budget planners.
WordPress.org
+5
WPForms
+5
WPForms
+5
Formidable Forms: Provides advanced calculation capabilities, ideal for complex formulas and custom calculators.
Elfsight
+9
WPForms
+9
Formidable Forms
+9
Calculated Fields Form: A free plugin that supports both simple and complex calculations, suitable for various use cases.
WordPress.org
Create Input Fields: Add fields for dimensions based on the shape (e.g., length and width for rectangles, radius for circles).
Define Calculation Logic: Use the plugin's built-in functions to apply formulas.
Rectangle: Surface = Length × Width
Circle: Surface = π × Radius²
Formidable Forms
+1
Formidable Forms
+1
Style the Calculator: Customize the appearance using the plugin's styling options or custom CSS to ensure it matches your site's design.
By following these steps, you can create an interactive and user-friendly calculator on your WordPress site. If you need assistance with specific plugins or features, feel free to ask!
Thanks for sharing this! I’ve used Formidable Forms before, and it’s a solid choice for building custom calculators. Just a tip: if you're working with different units (like meters vs. feet), make sure to include a unit selector or clearly mention the unit in the labels to avoid confusion. Also, testing the calculator on mobile is super important — a lot of users will be accessing it that way.
Thanks a lot for your feedback! 😊 I totally agree — including a unit selector or clear labels is crucial when working with different measurement systems. And yes, mobile testing is a must these days — it’s easy to overlook, but most users do access forms on their phones. Appreciate the tip and glad to hear you’ve had a good experience with Formidable Forms too!
Creating dynamic input fields based on shape selection is a smart way to improve user experience—especially when guiding users through geometric calculations. Adjusting the form to show just the relevant fields, like length and width for rectangles or radius for circles, keeps things clean and intuitive. I’ve seen similar interactive design principles used in tools like Alyawm Flash, where content adapts fluidly based on user input or context. It’s a great reminder of how thoughtful UI/UX design can really enhance both functionality and engagement.
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