Localization vs Translation: What's the Difference, and Which Do You Need?

The two terms are often used as if they mean the same thing. They do not, and mixing them up is one of the most common reasons a project goes over budget or lands badly in a new market.

Translation: the words

Translation converts text from one language into another while keeping the meaning intact. It is the right choice when accuracy and fidelity are the priority: contracts, certificates, reports, manuals, policies and research papers. The reader needs to understand exactly what the original says.

Localization: the whole experience

Localization starts with translation and then adapts everything else that makes content feel native to a particular market. That includes:

• Formats: dates, times, numbers, currencies, units, addresses and phone numbers.
• Tone and register: how formal, friendly or direct the message should sound for that audience.
• Visuals and colours: images, icons and colours that mean different things in different cultures.
• Layout: text expansion, right-to-left scripts such as Arabic and Urdu, and fonts that support the script.
• Legal and cultural fit: references, examples and claims that suit local rules and sensibilities.

A simple example

Take a mobile app that says "Rate us 5 stars" with a date picker set to MM/DD/YYYY. A translation turns the sentence into Gujarati. Localization also changes the date format to DD/MM/YYYY, checks that the button still fits when the text is longer, adapts the currency to rupees and makes sure the tone suits Gujarati-speaking users.

Which one do you need?

How to decide

1. Ask what the reader will do with the content. If they only need to understand it, translation may be enough. If they need to use, buy or learn from it, you need localization.
2. Check how much of the content sits inside a product, such as buttons, menus and error messages. Those almost always need localization.
3. Think about the market. A country with several scripts, dialects and formats usually needs more than a word-for-word conversion.

If you are unsure, send us a sample. We will tell you honestly which approach fits and quote for that, not for the biggest scope.