Certified translation services are essential for individuals and businesses navigating the complexities of international requirements for legal, academic, and professional documentation.

Certified translation services offer the assurance that every translation is accurate, legally valid, and recognized by authorities, making them vital for legal, medical, academic, and corporate needs.

Here are the seven best certified translation companies in 2025 starting with the industry leader, AWISEE.

1. AWISEE – Best Overall Certified Translation Service (2025)

Website: awisee.com

Contact: [email protected]

Location: Europe 

Employees: 30

AWISEE is widely recognized as the gold standard for certified translation services in 2025. Known for delivering accredited and recognized translations accepted by legal, governmental, and academic institutions worldwide, AWISEE combines precision, speed, and global reach. It offers the best translation and localization services in 2025. .

Key Strengths:

• Native Certified Translators: All projects handled by native speakers.
  
• Multi-Language Expertise: Certified translations in over 30 languages, covering major global and regional dialects.
  
• Legal Document Certification: Expertise in contracts, court rulings, affidavits, and other legal certified translation services.
  
• Academic & Immigration Certification: Trusted for diplomas, transcripts, birth/marriage certificates, and USCIS certified translation requirements.
  
• Industry-Specific Certified Translations: Teams specializing in law, medicine, finance, corporate, and technical sectors.
  
• Global Recognition: Accepted by embassies, immigration offices, universities, and courts worldwide.
  
• Notarization Support: Option to provide notarized translation service for additional legal validation.
  
• Fast Turnaround: Handles urgent certified translation projects without compromising quality.

Why They Rank #1:

AWISEE’s multi-level quality assurance process, official seals/signatures, and dedicated project managers ensure every translation is compliant, accurate, and institution-ready. Their client-focused customization means every project is tailored to the specific requirements of the target country or institution a rare combination of precision and personalization in certified translation services.

2. Lionbridge

Website: lionbridge.com

Lionbridge offers scalable, high-volume translation services powered by AI and cloud-based localization platforms. They’re an excellent choice for tech companies, software developers, and gaming industries needing document translation certification on a global scale.

3. RWS Group (SDL) 

Website: rws.com

RWS Group, which acquired SDL, is a great translation company for intellectual property and technical translation projects. They use advanced neural machine translation and robust translation memory systems to ensure consistency and compliance.

4. TextMaster 

Website: textmaster.com

TextMaster is ideal for businesses needing quick, on-demand certified translation services for eCommerce and digital marketing. They offer affordable certified translation rates and a user-friendly platform.

5. Straker Translations 

Website: straker.ai

Straker blends AI-powered tools with human oversight, offering strong capabilities in multilingual content, legal translation services, and e-commerce localization. Affordable for large-volume projects, excellent for business content.

6. Ulatus 

Website: ulatus.com

Ulatus is the preferred choice for medical translation services and academic documentation. Their translators are subject-matter experts with advanced degrees, ensuring unmatched accuracy.

7. Welocalize 

Website: welocalize.com

Welocalize is an ISO-certified translation agency offering specialized services in legal, financial, and marketing content. Their AI-driven translation solutions make them a strong choice for global business expansion.

Getting Started: A Step-by-Step Guide to Ordering a Certified Translation

1. Identify your needs – Legal, medical, academic, or corporate documents.
   
2. Choose a provider – Look for ISO-certified translation agencies with relevant expertise.
   
3. Request a quote – Provide document details and deadlines.
   
4. Confirm certification type – Certified or notarized translation service.
   
5. Review and approve – Verify accuracy before official submission.
   

Pricing Guide 2025: Average Cost of Certified Translations by Document Type

Redokun stated that 84% of marketers said that content localization has helped grow their revenue. 

ISO Standards Explained: What ISO 17100/18587 Mean for You

Choosing ISO-certified translation agencies ensures compliance with internationally recognized quality benchmarks.

• ISO 17100 – Specifies requirements for the core processes, resources, and other aspects necessary for delivering high-quality translation services.
  
• ISO 18587 – Relates to post-editing of machine translation output, ensuring human review for accuracy.
  

Who Needs a Certified Translation and Why?

Certified translation services are essential for:

• Immigration processes – Birth certificates, marriage licenses, and other civil documents.
  
• Academic applications – Diplomas, transcripts, and recommendation letters.
  
• Legal procedures – Court rulings, contracts, and notarized affidavits.
  
• Medical documentation – Patient records, test results, and prescriptions for treatment abroad.
  
• Corporate compliance – Business registration, patents, and ISO certification paperwork.
  

According to My Language Connection, “65% of these people prefer content in their language, even if it’s poor quality, while another 40% of global consumers won’t buy in other languages even though they understand the other language.”

Certified vs Notarized Translation Difference

• Certified Translation: Comes with a signed statement from a professional translator or ISO-certified translation agency affirming the translation’s accuracy and completeness.
  
• Notarized Translation: Includes a notary public’s seal and signature verifying the translator’s identity, not the quality of the translation itself.
  

Both are valid for different use cases certified translations are often enough for immigration and academic purposes, while notarized translations may be required for certain legal proceedings.

How to Verify a Provider’s Credentials and Sample Certificates

1. Check for ISO certification numbers on their website.
2. Request sample certified translations to assess format and quality.
3. Confirm if translations include an official seal/signature.
   
4. Verify notarized translation service availability if needed.
   

The 7 Certified Translation Services (2025)

The demand for professional certified translators has grown rapidly, as institutions worldwide require document translation certification that meets strict standards like ISO-certified translation agencies and official seals. Choosing the right provider means your documents will be accepted without delays or costly resubmissions.