African languages

Swahili interpreting and translation

Swahili (Kiswahili) is the most widely used language of East Africa, spoken as a first language along the coast and as a shared second language by millions across the region. SILA Linguists® provides Swahili interpreters and translators who understand the differences between its regional forms.

  • Flag of Tanzania
  • Flag of Kenya
In its own words

Kiswahili

Script
Latin, Arabic (historical)
Direction
Left to right
ISO 639-3
swa

Swahili is a Bantu language with a long history as a language of trade on the East African coast, which explains its many loanwords from Arabic and, to a lesser degree, Farsi, Portuguese, English and German. Today it is a national and official language of Tanzania and Kenya, an official language of Uganda, and a working language of the East African Community and the African Union. In the Democratic Republic of the Congo it is one of four national languages and is widely used in the east of the country.

Most people who speak Swahili learnt it alongside another first language, such as Sukuma, Kikuyu, Kinyarwanda or Kirundi. This matters for interpreting: a speaker's Swahili may be fluent for everyday use but less comfortable for medical or legal detail, and their accent and vocabulary will reflect where they grew up.

Standard Swahili is based on the Kiunguja dialect of Zanzibar. Tanzanian usage is generally regarded as closest to that standard. Kenyan Swahili mixes more readily with English, and urban speech in Nairobi includes Sheng, a fast-changing youth register. Congolese Swahili (sometimes called Kingwana) has its own vocabulary and borrows from French and Lingala, and can be hard for East Coast speakers to follow at first.

  • Main areas: Tanzania, Kenya
  • Also used: Uganda, Rwanda, Burundi, Democratic Republic of the Congo, Mozambique, Comoros

Communities abroad are not shown. Point to an area to see its name.

How we help

Swahili services

SILA Linguists®

Swahili interpreting and translation services from SILA Linguists®

Swahili, or Kiswahili, grew as a language of trade on the East African coast and is now national and official in Tanzania and Kenya, official in Uganda, a national language of the Democratic Republic of the Congo and a working language of the East African Community and the African Union. Most speakers learned it alongside another first language. SILA Linguists® provides Swahili interpreters, translators and transcribers to public services, legal teams, development organisations and businesses across the United Kingdom, North America, Australia, New Zealand and beyond, matched to each speaker's country and region.

Swahili interpreters matched to coast, mainland or Congo

A person from eastern Congo is usually best served by an interpreter familiar with Congolese Swahili, while a client from Mombasa or Dar es Salaam will be comfortable with coastal or standard Swahili. We also check whether Swahili is the speaker's first language: if not, an interpreter in Kinyarwanda, Kirundi, Lingala or another first language may give a more accurate result. Swahili makes extensive use of respectful greetings and forms of address, and our interpreters handle them gracefully.

We cover asylum, immigration and resettlement casework, hospitals, GP surgeries and mental health services, courts, tribunals and police interviews, and schools and family support services. Interpreting is available in person, by telephone with interpreters ready at any hour, and by video in the SILA Linguists® app or the software you normally use for calls. For development programmes, research meetings and business negotiations in East Africa we provide consecutive, simultaneous and remote simultaneous Swahili interpreting, and a female or male interpreter can be requested for sensitive appointments.

Swahili translation, certification and localisation

Tanzanian legal and administrative Swahili differs from Kenyan usage, and Congolese documents are more often in French, so we match translators to the target audience. Certified Swahili translation of birth and marriage certificates, school results, court papers and police records comes with our signed accuracy statement, accepted by UK authorities such as the Home Office, courts and universities, and by employers. Older coastal texts in Arabic script are handled by a specialist.

For organisations working in East Africa, we translate contracts, reports, training materials and campaigns, and localise websites, apps and multimedia. AI-assisted translation with human post-editing suits large volumes.

Swahili transcription and subtitling

We transcribe Swahili interviews, research recordings, broadcasts and evidence with time references and an English rendering, and subtitle films and media. For asylum applicants whose origin is disputed, language analysis for determining origin (LADO) can distinguish Congolese, Tanzanian and Kenyan Swahili.

Sectors we support in Swahili

Our vetted, trained and qualified Swahili linguists can support immigration and resettlement services, NHS and mental health teams, courts and police, schools, international development agencies, researchers and businesses. One team coordinates every request, and each one is protected by signed confidentiality agreements and UK GDPR.

Good to know

Working with Swahili

Interpreting

  • Dialect matching is the main consideration. A person from eastern Congo is usually best served by an interpreter familiar with Congolese Swahili, while a client from Mombasa or Dar es Salaam will be comfortable with a speaker of coastal or standard Swahili. Let us know the speaker's country and region when booking.
  • Check whether Swahili is the speaker's first language. If it is a second language, an interpreter in their first language, such as Kinyarwanda, Kirundi or Lingala, may give a more accurate result.
  • Swahili makes extensive use of respectful greetings and forms of address, especially towards older people. Experienced interpreters carry that politeness across without adding or removing meaning.
  • Swahili works well for telephone and video interpreting, which makes it practical to arrange at short notice and outside working hours.

Translation

  • Swahili uses the Latin alphabet without special characters, so fonts and layout rarely cause problems. Older texts and some coastal Islamic literature were written in Arabic script; documents in that form need a specialist.
  • Terminology varies by country. Tanzanian legal and administrative Swahili differs from Kenyan usage, and Congolese documents are more often issued in French. We match translators to the target audience. We can also provide certified translations of Swahili documents accepted by UK authorities such as the Home Office, tribunals, courts and universities, and by international bodies.
Related languages

Swahili and its neighbours

Choose a language to see its page. Getting the right variety matters: tell us the region or dialect if you know it.

  • Asylum, immigration and resettlement casework
  • Hospitals, GP surgeries and mental health services
  • Courts, tribunals and police interviews
  • Schools and family support services
  • International development, research and business in East Africa
  • Transcription and subtitling of interviews and media
Get in touch

Need a Swahili interpreter or translator?

Our bookings team will confirm the details with you and arrange the right linguist. Have the language (and dialect, if you know it), the type of assignment and the date ready.

Call our bookings team+44 (0)333 339 8218
EmailOpen in your email app
WhatsAppMessage us Opens WhatsApp in a new conversation