Even if the majority of your current audience speaks a single language, you could limit yourself by keeping your site unilingual. It restricts your potential users and could lead to a decrease in conversions.
Translating your site is a smart and forward-thinking strategy. It enables you to draw in new users and makes it easier to communicate directly with non-native speakers who may be interested in your content. It’s also a lot easier than you might expect.
Translating plugins and themes into other languages apart from English is all the rage these days as WordPress usage booms across the globe. After all English is not even the most widely spoken language, so clearly we need to take care of the speakers of other languages and this will also help us plugin and theme developers make more sales for our products.
A very handy plugin to help you translate your plugins and themes is Loco Translate, which can be downloaded for free from the plugin repository.