If you're selling products online and thinking about expanding into new markets, you've probably come across both terms: translation and localization. They sound similar. A lot of people use them interchangeably. But they're not the same thing — and choosing the wrong approach can quietly kill your international sales.

Here's the difference, when each one makes sense, and how to build a strategy that actually works.

Translation vs. Localization: What's the Difference?

Translation converts your text from one language to another. It focuses on accuracy: making sure the words mean what they're supposed to mean in the target language. For an e-commerce store, that covers product descriptions, names, checkout buttons, emails, and terms and conditions.

Translation makes your store understandable to a new audience. That's valuable. But it stops there.

Localization goes further. It adapts your entire shopping experience so it feels native to the market you're entering. That includes the language, yes — but also the currency, the imagery, the payment methods, the date formats, the sizing charts, and the cultural tone of your copy.

A simple way to think about it: translation changes what you say. Localization changes how it lands.

Why Localization Usually Wins

For most brands serious about international growth, localization is the stronger investment. Here's why.

Shoppers buy in their language. Research from CSA Research found that 76% of online shoppers prefer to buy from sites in their own language, and around 40% won't buy from English-only sites at all. If your store feels foreign, people leave.

Currency matters more than you think. Showing prices in a local currency can increase conversion rates by up to 40%. Asking a German shopper to mentally convert dollars to euros at checkout is friction — and friction loses sales.

Localization reduces returns. A lot of returns come from simple mismatches in expectations. If your sizing chart uses U.S. labels in a European market, customers order the wrong size. Adapting those details upfront saves you money on the back end.

It helps you rank on local searches. "Sneakers" in the U.S. are "trainers" in the UK. If your translated site uses the American term, it won't show up when UK shoppers search. Localization includes adapting your keywords to how people in that market actually search — and in some regions, that means optimizing for Baidu or Yandex instead of Google.

When Simple Translation Is Enough

Localization takes more time and budget. It's not always necessary at every stage. Translation on its own can make sense when:

• You're testing a new market with a small budget and want to see if there's demand before committing.
• The target market is culturally close to your home market — like a U.S. brand expanding into Canada.
• The content is purely technical. Safety instructions, ingredient lists, or spec sheets don't need cultural adaptation. Accuracy matters more than resonance here.

If you're just dipping your toes in, a clean translation is a reasonable starting point. Just know its limits.

What Product Description Localization Actually Covers

If you decide to localize your e-commerce store, the changes go well beyond the words on the page. Here's what typically needs to be adapted:

Pricing and currency. Display prices in the local currency, and round them to match local pricing norms. A direct conversion that shows €9.42 looks odd next to a local competitor charging €9.99.

Units and sizing. Convert inches to centimeters, pounds to kilograms, Fahrenheit to Celsius. Adapt clothing and shoe size charts to local standards — EU, UK, and US sizes are all different.

Date and time formats. The U.S. writes dates as MM/DD/YYYY. Most of Europe uses DD/MM/YYYY. Getting this wrong on a shipping estimate or a sale deadline creates real confusion.

Payment methods. Don't assume everyone pays by credit card. Dutch shoppers often prefer iDEAL. Chinese shoppers use Alipay or WeChat Pay. Parts of Eastern Europe prefer cash on delivery. Missing a preferred payment method is a fast way to lose a sale at the final step.

Images and colors. Photos should reflect the local market. Color symbolism also varies — white represents purity in Western cultures but is associated with mourning in many Asian ones. These details matter more than most brands realize.

Legal requirements. GDPR in Europe, consumer protection laws in Australia, return policy rules in various countries — these need to be reflected accurately in your localized store.

Layout and design. Some languages use more words than English to say the same thing, which can break your UI. Arabic and Hebrew run right to left. Your site design needs to handle both without falling apart.

A Practical Approach: The Tiered Strategy

You don't need to give every single product the full localization treatment. Most brands get better results — and better value — by prioritizing.

Top tier: Human translation and transcreation. Use professional translators for your homepage, category pages, checkout flow, and top-selling products. This is where your brand voice lives, and it's where getting it right matters most. For marketing slogans and taglines, you often need transcreation — rewriting the copy to land the same emotional punch in the new language, even if the words change significantly.

Middle tier: AI translation with human review. For standard product descriptions, machine translation followed by a post-editing by a human editor is a cost-effective middle ground. You get speed and scale without sacrificing quality where it counts.

Bottom tier: Machine translation only. For low-traffic products or high-volume catalogs — think thousands of hardware components — machine translation keeps costs manageable. The stakes are lower, and accuracy on basic specs is usually sufficient.

Read more: How to Tell if a Translation Is AI or Human: 5 Clear Methods

Getting Started: The Short Version

If you're ready to move forward, here's a simplified roadmap:
1. Find your markets. Check your analytics to see where international traffic is already coming from. Start there.
2. Pick the right platform. Make sure your e-commerce platform can handle multiple languages and currencies. Most major ones can, but the setup matters.
3. Use a translation management system. Tools like Crowdin or Smartling centralize your content and automatically flag new or updated products for translation. This keeps your site consistent as it grows.
4. Test with native speakers. Before going live, have real people from the target market review the experience — not just the text, but the full purchase journey from ad click to order confirmation.

Do you have documents that require professional translation?

At Transpose, we provide secure, certified translations tailored for corporate companies, law firms, and financial and consultancy firms. Your documents are stored safely in Swiss-based datarooms — no redaction needed. Certified translations are available with Agency, ITI, notarization, and apostille options, all meeting ISO 17100 and 18587 standards. For a consultation or quote, email us at trp@transpose.ch or call +41 22 839 79 79 today.