Sworn English–Spanish Translator for Official Documents in Spain
Official English ↔ Spanish sworn translations by Sergio Boix Mira, Spanish Ministry-appointed Sworn Translator-Interpreter No. 4473. Online service for clients in Spain and abroad.
- Spanish Ministry-appointed Sworn Translator-Interpreter
- English ↔ Spanish, in both directions
- More than 20 years of professional experience
- Direct, personal and confidential service

What do you need translated?
I provide English–Spanish sworn translation services for documents such as:
- Official qualifications
- Diplomas
- University degrees
- Academic qualifications
- CVs
- Criminal record certificates
- Commercial invoices
- Birth certificates
- Marriage certificates
- Death certificates
- Trinity certificates
- Cambridge certificates
- Certificates of life and civil status
- DNI / NIE
- Passports
- Driving licences
- Academic transcripts
- Adoption records
- Patents
- Family Records Books
- Powers of Attorney
- Notarial deeds
- Company incorporation documents
- Court evidence
- Sexual Offences Certificates
- APTIS certificates
- Residence permits
- Municipal registration certificates
- Legal claims
- Judgments or court rulings
- Articles of Association
- Wills
- Sworn statements
- Employment contracts
- Sale and purchase agreements
- Rental agreements
- Letters of recommendation
- Medical certificates
- Vehicle invoices
How it works
1. Send your documents
Send a clear PDF or scan by email or WhatsApp.
2. Receive your quote
I will review the documents and confirm the price, delivery time and format.
3. Receive your sworn translation
Receive your sworn translation in the agreed format, duly signed and certified.
About Sergio Boix Mira
I am Sergio Boix Mira, Spanish Sworn Translator-Interpreter of English No. 4473, appointed by the Spanish Ministry of Foreign Affairs. I personally provide sworn translations from English into Spanish and from Spanish into English for individuals, law firms, businesses and institutions, with an online service available to clients in Spain and abroad.
I work directly with each client and handle documents confidentially, drawing on more than 20 years of professional experience and a specialisation in English ↔ Spanish translation.
What is a sworn translation in Spain?
In Spain, an official sworn translation is produced by a Sworn Translator-Interpreter appointed by the competent Ministry. The translator certifies the translation with their signature and seal for submission to authorities and institutions when an official translation is required.
Requirements for documents used abroad depend on the country, authority and procedure.
Request a quote
Send a clear copy of your documents and tell me which authority or procedure they are for. I will review them and reply with a quote and delivery details.