Description
CBM Calculator is a powerful shipping calculator plugin that helps you calculate cubic meters (CBM), cubic feet (CFT), volumetric weight, and container fitting — directly on your WordPress site.
Powered by the CBM Calculator API, the plugin delivers accurate real-time calculations as you type.
Three Calculator Templates
Single Product
Calculate CBM, CFT, volumetric weight (sea & air), and container fitting for one product at a time. Perfect for simple shipping queries.
Multiple Products
Add multiple products in a table layout, each with its own dimension unit and weight unit. Get per-row results and grand totals for CBM, CFT, and quantity.
Container Fitting
Visual card layout showing exactly how many units fit in a 20 FT, 40 FT, and 40 FT HC container.
Key Features
- Real-time calculations as you type — debounced for accuracy
- 3 calculator templates to suit different use cases
- Per-row unit of measurement in Multiple Products template
- Full color customization — Primary, Header, Button, Background, Text, Border
- Border radius control for sharp or rounded styling
- Show/hide optional fields — Volumetric Weight Sea, Volumetric Weight Air, Container Fit
- Reset to Defaults button in settings — preserves your API key
- Fully responsive — works on mobile, tablet, and desktop
- Simple shortcode: [cbmcal_calculator_plugin]
Supported Units of Measurement
Dimensions: cm, mm, meter, inch, feet, yard
Weight: kg, lb
API Key
This plugin requires a free API key from cbmcalculator.com. You receive 100 free API calls for development. Paid plans are available for production use.
Usage
Add the shortcode to any page or post:
[cbmcal_calculator_plugin]
Then go to Settings CBM Calculator to configure your API key, choose a template, customize colors, and toggle fields.
Screenshots
Installation
- Install plugin from WordPress
- Visit https://www.cbmcalculator.com/profile.html?utm_source=wordpress&utm_medium=plugin-readme&utm_campaign=cbm-calculator
- Create a free account
- Copy your API key from the profile page after login (100 free API calls for development)
- Go to Settings > CBM Calculator and paste your API key
- Choose a template, customize colors, toggle fields
- Add shortcode [cbmcal_calculator_plugin] to any page or post
FAQ
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Where do I get an API key?
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Visit cbmcalculator.com/profile.html, create a free account, and copy your API key from the profile page.
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How many free API calls do I get?
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You get 100 free API calls for development. For production use, paid plans are available on cbmcalculator.com.
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Which shortcode do I use?
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Add
[cbmcal_calculator_plugin]to any page, post, or widget. -
Can I customize the colors?
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Yes — go to Settings CBM Calculator and you will find color pickers for Primary, Header, Button, Background, Text, and Border colors, plus a border radius slider.
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Can I hide certain fields?
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Yes — in Settings CBM Calculator you can toggle Volumetric Weight Sea, Volumetric Weight Air, and Container Fit on or off.
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Does it work on mobile?
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Yes — the calculator is fully responsive and adapts to any screen size.
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Which units of measurement are supported?
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Dimensions: cm, mm, meter, inch, feet, yard. Weight: kg, lb.
Reviews
There are no reviews for this plugin.
Contributors & Developers
“CBM Calculator” is open source software. The following people have contributed to this plugin.
Contributors
Translate “CBM Calculator” into your language.
Interested in development?
Browse the code, check out the SVN repository, or subscribe to the development log by RSS.
Changelog
1.2.0
- Tested up to WordPress 7.0
- New: 3 calculator templates — Single Product, Multiple Products, Container Fitting
- New: Per-row dimension and weight unit selectors in Multiple Products template
- New: Color customization — Primary, Header, Button, Background, Text, Border
- New: Border radius control
- New: Show/hide fields — Volumetric Weight Sea/Air, Container Fit
- New: Reset to Defaults button in settings (preserves API key)
- Improved: Debounced calculations — no more stale results on fast typing
- Improved: Responsive design, full width layout
- Fixed: Settings save issue with color fields
1.1.0
- Tested up to WordPress 6.8
- Replaced deprecated wp_print_scripts hook with wp_enqueue_scripts
- Moved inline event handlers to JavaScript
- Improved mobile responsiveness
- Fixed typo in error message
- Replaced deprecated new Object() with object literal syntax
1.0.0
- Initial release