Description

Nempra Measure Lite adds a length x width calculator to any simple WooCommerce product. As the customer chooses dimensions, the price updates instantly on the product page, calculated as length x width x the product’s normal WooCommerce price per square meter.

The plugin uses standard WooCommerce hooks only. It has no theme-specific integration, so it works with any properly-coded WooCommerce theme.

What’s included in Lite

Length x width area calculation, live on the product page.
Works with simple (single-variant) products.
Server-side re-validation at checkout, so the price shown always matches the price charged.
Existing settings and product data from a supported legacy measurement plugin are read automatically as a migration fallback — nothing is deleted.

Lite and Pro

Lite is a complete, unrestricted calculator for simple products — it is not a limited trial of Pro. Nempra Measure Pro is a separate plugin for stores that also need:

Variable products (multiple options per product, each with its own measurement rules).
Per-variation measurement overrides.
Advanced min/max length and step rules per product.
Priority support and updates.

Pro is a drop-in upgrade: it shares its settings and product-metadata schema with Lite, so switching plugins does not require reconfiguring your products.

Screenshots

The calculator on a product page, ready for the customer to pick dimensions.

A live calculation: 5 m length, 1 m width -- area and total price update instantly. — The calculator on a product page, ready for the customer to pick dimensions.

Installation

Upload the plugin files to /wp-content/plugins/nempra-measure-lite, or install it through the WordPress plugins screen directly.
Activate the plugin through the ‘Plugins’ screen in WordPress.
Make sure WooCommerce is installed and active — Nempra Measure Lite requires it.
Open a simple product’s edit screen and set your length range, step size and width(s) under the Measurement tab.
Save the product. The calculator appears automatically on its product page.

FAQ

Does this work with variable products?: Not in Lite. Lite is built for simple (single-variant) products. Variable-product support, with per-variation overrides, is a Nempra Measure Pro feature.
I’m migrating from another measurement calculator plugin. Is that safe?: Yes. On activation, Nempra Measure Lite detects the old plugin’s settings and product metadata and reads them as a starting point — your existing configuration is never deleted. Never run both pricing plugins active at the same time: Lite detects the old plugin and will not boot its own pricing engine while it remains active. We recommend testing on a staging copy first: deactivate the old plugin, activate this one, confirm a sample product still shows its prior configuration, then re-save that product and test the full product page, cart, checkout and order flow before going live.
Will my settings carry over if I upgrade to Pro?: Yes. Pro reads the same settings and product-metadata schema as Lite, so upgrading is a drop-in replacement — no reconfiguration needed.
Does the price shown to the customer match what they’re actually charged?: Yes. The price calculation is re-validated on the server at checkout, using the product’s current configuration — the browser-side number is never trusted on its own.

Reviews

There are no reviews for this plugin.

Contributors & Developers

“Nempra Measure Lite” is open source software. The following people have contributed to this plugin.

nempra

Translate “Nempra Measure Lite” into your language.

Interested in development?

Browse the code, check out the SVN repository, or subscribe to the development log by RSS.

Changelog

1.0.1

Fixed: the disabled “Pro preview” fields on the product Measurement tab
printed their CSS and JavaScript inline instead of using wp_enqueue_style()
/ wp_enqueue_script(). Both now load from properly enqueued, screen-scoped
asset files.
Removed the packaged .po/.mo translation files; translations are handled
through translate.wordpress.org.

1.0.0

First stable release. Nempra Measure Lite has been live-tested end to end
on a real WooCommerce store and passed a full security and performance
audit with no issues found.

0.4.0-beta.7

Added request-local caches for settings and product configuration.
Limited calculator assets to product pages by default while preserving the public override filter.
Reduced MutationObserver scope when the calculator is already present.
Hardened admin navigation output.

0.4.0-beta.6

Added Settings, Getting started and Help tabs to the branded dashboard.
Added a three-step onboarding guide and first-activation welcome notice.
Added an explicit Lite versus Pro capability comparison.
Added packaged getting-started and troubleshooting documentation.

0.4.0-beta.5

Added the official Nempra symbol to the branded settings dashboard.

0.4.0-beta.4

Added the branded Nempra Measure settings dashboard.
Added edition, version, environment and HPOS status information.
Improved setting descriptions, layout, accessibility and responsive behavior.
Refreshed the English source catalog and Dutch translation.

0.4.0-beta.3

Renamed the public product identity to Nempra Measure by Nempra Software.
Adopted the final plugin slug and translation domain nempra-measure.
Preserved the existing yzpm_* settings and metadata schema for upgrades.

0.4.0-beta.1

Established the standalone Lite edition for simple WooCommerce products.
Kept the tested calculation, migration, cart, checkout, order, translation, and theme-independent behavior.
Separated variable-product implementation into the Pro distribution.

0.2.0-alpha.1

Split the monolithic prototype into bootstrap, settings, product, frontend, cart/order, admin, and legacy compatibility services.
Replaced legacy-branded settings and new metadata with the neutral yzpm_* schema.
Added read compatibility for existing sgmc_settings and _sgmc_* product metadata.
Added runtime compatibility for existing sgmc cart sessions so open carts keep their validated measurements during migration.
Added a safe conflict notice when the old pricing plugin remains active.
Removed all WoodMart-specific selectors and markup manipulation.
Replaced catalog-button HTML regex editing with WooCommerce filters.
Fixed the settings capability mismatch for shop managers.
Added dependency, license, domain path, and version metadata.
Changed source strings to English and added Dutch localization scaffolding.
Limited frontend assets to WooCommerce surfaces, with a public filter for custom product layouts.