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.

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.