Unit Converter & Sizing Calculator for Product Pages

Enhance your product pages with inline unit conversion and interactive unit-aware sizing calculators powered by CalcsLive. Makes it easier for customers to choose the right size and quantity before checkout. Help Reduce support inquiries and product returns.

Free: Unit converter shortcodes that let visitors toggle between metric and imperial units in your product specifications—no account required.

Pro: Embed powerful sizing and quantity calculators from CalcsLive that guide customers to the right product configuration.

Perfect For

• E-commerce stores – AC sizing, concrete quantity, flooring coverage, paint calculators
• Technical products – Specifications with live unit conversion (mm ↔ inches, kg ↔ lbs)
• Building materials – “How many bags do I need?” calculators
• Industrial equipment – Belt sizing, cylinder selection, capacity calculators

Key Features

• Unit Converter Shortcodes – Free, no API key needed: [calcslive_qty value=25 unit="mm"]
• Calculator Embed – Embed full calculators: [calcslive id="YOUR_ID"]
• Gutenberg Block – Visual editor with live preview
• Responsive – Works on desktop, tablet, and mobile
• Lightweight – Scripts load only on pages that use them

Buying Calculations: Reduce Returns, Increase Confidence

Technical products often require customers to determine the right size and the right quantity before purchase. Without guidance, they guess—leading to returns, exchanges, and frustration.

Buying Calculations solve this by embedding pre-purchase calculators directly on product pages:

• Sizing calculators – Help customers choose correct dimensions, capacity, or fit
• Quantity calculators – Calculate how many bags, sheets, or units are needed

Create Calculators Without Coding

Traditional product calculators require custom development. CalcsLive changes this:

• Create calculation logic using familiar technical data
• Turn it into an interactive, unit-aware calculator
• Embed on WordPress with a simple shortcode

From days of development to under one hour—no coding required.

Product teams, engineers, or office staff can create and deploy calculators themselves, shifting calculator creation from a development task to a content task.

How It Works

For unit converters (free, no account):
1. Add to any page:
– [calcslive_qty value=25.4 unit="mm"] for single quantity
– [calcslive_qty_pair values="10,20" unit="cm"] for quantity pair, and
– [calcslive_qty_triplet values="1,2,3" unit="m"] for quantity triplet.
2. Visitors click to convert between compatible units

For embedded calculators:
1. Create your calculator on CalcsLive
2. Get your embed API key and article ID
3. Add [calcslive id="YOUR_ID"] to your product page
4. Customers use the calculator interactively

Free Tier

Start free with CalcsLive:
* 2 embedded calculators
* 1 domain
* Full calculator functionality
* Unit converter shortcodes (unlimited, no account needed)

Get started free

Third-Party Service

This plugin relies on the CalcsLive external service to display interactive calculations. When an embed is rendered, your visitor’s browser loads content directly from CalcsLive via an iframe.

What is sent:

• Your embed API key and domain (included in the iframe URL)
• The article ID you specify in the shortcode or block

No visitor data (such as IP addresses, cookies, or personal information) is collected or sent to CalcsLive by this plugin. The iframe loads in the visitor’s browser like any standard embedded content.

• CalcsLive website: calcslive.com
• Terms of Service: calcslive.com/terms
• Privacy Policy: calcslive.com/privacy

Demo Site

See live examples at cl.donwen.com:

• Portable Air Conditioner – AC sizing calculator
• Concrete Mix – Quantity calculator
• Gates A36 Belt – Belt selection tool
• Air Cylinder – Air Cylinder Sizing Calculator