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English to Thai Localization Services

Native Thai speakers who understand dialects, registers, and text expansion challenges. Subtitles, voiceover, websites, apps, and e-learning from Bangkok.

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Since 2008 Bangkok-based
20,000+ Projects completed
100% Native Thai team
50+ Corporate clients
Our Services

Thai Localization Solutions

Thai localization requires more than translation: it demands native speakers who understand dialect selection, text expansion challenges, and the five registers of Thai speech.

Subtitling & Closed Captions

Professional Thai subtitles for video content, films, streaming media, and corporate presentations. We handle timing, text expansion, and line breaks for Thai script.

The stakes: Poor subtitles break immersion and confuse viewers. Thai text takes 15% more space and has no word breaks.

Voiceover & Dubbing

Native Thai voice talent for commercials, e-learning, corporate videos, and entertainment content. We match tone, register, and pacing to your original.

The stakes: Wrong dialect or register alienates your audience. Thai has 5 registers from casual to royal.

Website & App Localization

Full website and mobile app localization including UI strings, help text, error messages, and marketing content. CMS-ready delivery.

The stakes: Thai text expansion breaks layouts. Formal vs. casual language choice impacts brand perception.

E-Learning & Training

Course localization for LMS platforms, including video narration, slide translation, quiz adaptation, and SCORM-compliant output.

The stakes: Technical terms need consistent handling. Cultural references may not transfer to Thai context.

Trust & Expertise

Numbers That Tell Our Story

Established track record with media companies, e-commerce platforms, and international businesses entering the Thai market. Member of the Thai Translators and Interpreters Association. See our case studies for examples.

17+ Years Thai localization experience
20,000+ Projects delivered
Bangkok Local office & team
100% Native Thai linguists
Trusted By

Companies We've Helped Enter Thailand

From global brands to regional businesses, 50+ corporate clients trust our English to Thai localization services.

Shell
PepsiCo
Agoda
Accor Hotels
Yamaha
Kempinski Hotels
H&M
AirAsia
BMW
Hitachi
Why Choose Us

The Bangkok Advantage

4.9/5
400+ reviews
Top Rated
Native Thai Speakers Only
Every project is handled by linguists who grew up speaking Thai and understand the nuances between formal, casual, and regional dialects.
Mother-tongue translators
Bangkok-Based Team
Our localization team works from Bangkok, giving you same-timezone communication and deep knowledge of the local market. See our company profile.
Local presence since 2008
Thai Script Specialists
We handle Thai text expansion, proper line breaks (Thai has no spaces between words), and diacritical mark placement correctly.
Technical expertise
Dialect & Register Control
Central Thai for business, regional dialects when needed, and the right register (formal, casual, royal) for your audience and context.
Cultural localization
Quality Assurance Process
TEP workflow (translation, editing, proofreading) with terminology management and style guide adherence for consistency.
Industry-standard QA
Fast Turnaround
Rush delivery available. Most localization projects completed within 48-72 hours depending on volume and complexity.
Responsive service
Localization Expertise

Thai Language Challenges We Solve

Thai is a tonal language with no word spacing, five speech registers, and 15% text expansion from English. These challenges require native Thai linguists to solve correctly.

Tonal Language Complexity

Thai has five tones that can completely change word meaning. Our native speakers ensure voiceover and dubbing projects use correct tonal pronunciation that sounds natural, not robotic or machine-generated.

Text Expansion (15%+)

Thai text typically expands 15% compared to English. We account for this in UI localization, subtitle timing, and print layouts to prevent truncation and maintain visual balance.

No Word Spacing

Thai script has no spaces between words, only between phrases and sentences. This makes line breaking complex for subtitles and UI text. Our linguists know exactly where to break Thai text.

Five Registers

Thai has distinct registers: Common (friends), Formal (business), Rhetorical (public speaking), Royal (monarchy), and Religious (Buddhism). Using the wrong register damages credibility and brand perception.

How It Works

From Brief to Delivery in 5 Steps

A proven workflow that ensures quality, consistency, and on-time delivery for every localization project.

1

Project Brief

Share your content, target audience, preferred dialect, register, and any existing style guides or glossaries. We quote based on scope and turnaround.

2

Team Assignment

We assign native Thai linguists with expertise in your content type (media, technical, marketing) and create a terminology base for consistency.

3

Translation & Adaptation

Your content is translated and culturally adapted by native speakers. We handle text expansion, dialect selection, and register appropriateness.

4

Quality Review

A second linguist reviews for accuracy, flow, and cultural fit. For multimedia, we verify timing, synchronization, and technical specifications.

5

Delivery & Support

Receive your localized content in your required format. We include a revision window and support for any post-delivery questions.

Ready to Localize Your Content for Thailand?

Get a free quote for your English to Thai localization project. We reply within hours during Bangkok business hours.

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Free quote in 2 hours or less during business hours

Common Questions

Frequently Asked Questions

  • Do you use native Thai speakers for all localization work? +

    Yes. Every English to Thai localization project is handled by native Thai speakers who were born and raised in Thailand. Our linguists are fluent in both Thai and English, with expertise in their specific content areas (media, technical, marketing, legal). We never use non-native speakers or machine translation without human post-editing. Learn more about our Thai-English translation services.

  • What is the typical turnaround time for Thai localization? +

    Turnaround depends on content type and volume. For document and website localization, most projects are completed within 2-5 business days. Subtitling and voiceover projects typically take 3-7 days depending on runtime. Rush delivery is available with advance notice. We provide accurate timelines with every quote.

  • What file formats do you support for subtitling and video? +

    We work with all standard subtitle formats including SRT, VTT, TTML, SCC, and STL. For video delivery, we can provide embedded subtitles or separate caption files. We also handle timecode conversion between frame rates (23.976, 25, 29.97, etc.) and can deliver in broadcast or streaming specifications.

  • Can you handle different Thai dialects and registers? +

    Absolutely. While Central Thai (Bangkok Thai) is standard for most business and media content, we can localize into regional dialects (Northern, Northeastern/Isan, Southern) when appropriate. We also carefully select the right register: Formal for business, Common for casual content, and specialized registers for royal or religious contexts.

  • Do you offer voiceover and dubbing services? +

    Yes. We provide professional Thai voiceover for e-learning, corporate videos, commercials, and entertainment content. Our voice talent pool includes male and female artists across different age ranges and vocal styles. We handle script adaptation, recording direction, and audio post-production in-house. For live events, see our Thai interpreter services.

  • What quality assurance process do you follow? +

    We follow a TEP (Translation, Editing, Proofreading) workflow. After initial translation by a native Thai linguist, a second reviewer checks for accuracy, terminology consistency, and cultural appropriateness. For multimedia projects, we add technical QA to verify timing, synchronization, and format compliance. Every project includes a revision period.

Get Started

Get in Touch

Based in Bangkok since 2008. Get a free quote for your English to Thai localization project. More questions? Visit our FAQ page.

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Bangkok Office

Address Soi Phetchaburi 3, Ratchathewi, Bangkok 10400
Phone +66 97 957 3343
Email info@bangkok-translation.com
Hours Mon-Sat 8:30-18:00 (GMT+7)

Quick Response

Quote Within 2 hours during business hours
WhatsApp Available for instant messaging

Service Coverage

Content Subtitles, voiceover, websites, apps, e-learning
Languages English to Thai, Thai to English, Chinese, Indonesian, 25+ pairs

Company

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  • Company Profile
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  • llm.txt
  • Frequently Asked Questions
  • Contact us
  • Company Profile
  • Work with us
  • CSR
  • Case Studies
  • Terms and Conditions
  • Privacy Policy
  • llm.txt

Document Support

  • Academic Transcript and Diploma
  • Affidavit
  • Birth Certificate
  • Change Of Name
  • Company Documents
  • Contracts and Legal Documents
  • Divorce Certificate
  • Driver’s License
  • Marriage Certificate
  • Police Clearance Certificate
  • Tax Returns
  • Title Deeds
  • Academic Transcript and Diploma
  • Affidavit
  • Birth Certificate
  • Change Of Name
  • Company Documents
  • Contracts and Legal Documents
  • Divorce Certificate
  • Driver’s License
  • Marriage Certificate
  • Police Clearance Certificate
  • Tax Returns
  • Title Deeds

Language Services

  • Burmese
  • Chinese
  • Indonesian
  • Korean
  • Lao
  • Malay
  • Russian
  • Thai
  • Burmese
  • Chinese
  • Indonesian
  • Korean
  • Lao
  • Malay
  • Russian
  • Thai

Guides

  • Document Legalization Guide
  • Embassy Assistance Service in BKK
  • Why You Won’t Find Apostilles Services in Thailand
  • Document Notarization Guide
  • Social Media Translation Guidelines
  • Thai Content Localization Guide
  • Document Legalization Guide
  • Embassy Assistance Service in BKK
  • Why You Won’t Find Apostilles Services in Thailand
  • Document Notarization Guide
  • Social Media Translation Guidelines
  • Thai Content Localization Guide

BANGKOK TRANSLATION AND INTERPRETATION SERVICE | WE PROVIDE HIGH-QUALITY TRANSLATION SERVICES FOR ALL YOUR DOCUMENTS RIGHT IN THE CENTER OF BANGKOK, THAILAND
Bangkok Translation & Interpretation Service 
25 Alma Link Building, 17th Floor (Found Office), Chit Lom Alley, Phloen Chit Rd., Lumphini, Pathum Wan, Bangkok 10330 | 097 957 3343
Bangkok Translation & Interpretation Service is a division of Siam Three Sixty co. Ltd.  

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