Best steel hardness calculator plugins for WordPress
The most popular steel hardness calculator plugins for WordPress in November 2026, in WordPress.org’s own popular order, which follows active installs. Steel Hardness Calculator leads with 10+ active installs. All 1 plugins tagged “Steel Hardness Calculator” are below, with figures from WordPress.org that update every day.
Installs aren’t everything: a recent release, a “Tested up to” that matches the current WordPress, and support threads that get resolved show a plugin is looked after. Open any plugin for its downloads, rank history and alternatives.
Research this niche or see all plugins.
Top 1 steel hardness calculator plugins
- 1.
Steel Hardness CalculatorThe most installed steel hardness calculator plugin, with 10+ active installs. Only 1 review so far, last updated 9 years ago. Tested only up to WordPress 3.4.2.