Responsive design allows a business to reach computers, tablets and smartphones from a single website.

Here is a list of responsive themes on WordPress for ecommerce sites. Many of these themes are designed to be used with specific ecommerce plugins. All are premium themes, though relatively inexpensive.

Sentient

Sentient uses the WooCommerce plugin for WordPress. This responsive theme is built upon jQuery masonry to showcase products without wasted space. It has several color schemes, a customizable home page, and two custom shortcodes to highlight messages and to display sale banners. Price: $70.

Shelflife

Shelflife is a responsive WordPress theme, for the WooCommerce plugin, with a home page dedicated to featured, popular, and recent products. It has dedicated spaces for mini-features and promotions powered by their own custom post types, as well as a sidebar widget and footer regions. Price: $70.

Gridport

Gridport features V-grid animation for product page images, optional pop-out shopping cart tab, and fancybox effects for all images. Price: $59.

Argentum

Argentum is a WordPress theme that uses the WooCommerce plugin. It has a clean responsive design with two shortcodes, a sticky note and a banner, and a unique template to showcase sale products. The home page has two widget areas and a space for your latest blog. Price: $70.

Echo

Echo is a flexible WordPress theme that works with a number of ecommerce plugins – WooCommerce, WP e-Commerce, Jigoshop and BuddyPress. It features a responsive grid layout, and customizable background and controls. Price: $55.

Emporium

Emporium is a responsive WordPress theme to use with the WooCommerce plugin. The home page contains an optional responsive slider to highlight your featured and recent products, while providing two widget areas, and a space for your latest blog posts. Price: $70.

Wardrobe

Wardrobe features a headline product slider, promotional line, AJAX-powered navigation and more. Wardrobe is compatible with WordPress plugins WP e-Commerce, Jigoshop and WooCommerce. Price: $69.

Sneakers Addict

Sneakers Addict is designed for casual fashion, clothing stores, and independent fashion lines. It features a large slider that previews the next thumbnail in CSS-powered rounded corners. Wardrobe is compatible with WordPress plugins WP e-Commerce, Jigoshop and WooCommerce. Price: $69.