Alconost Inc.
901 N. Pitt Street
Suite 170
Alexandria VA 22314

Go to Nitro

Nitro — human translation online

  • by native speakers
  • into 70+ languages
  • within 24 hours
  • translate Google Sheets, Google Docs, iOS .strings, plain text

Authentic and affordable translation by native-speaking professional linguists. Self-service platform with no back-and-forth!

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Some of our clients

Our clients are major players in the IT market, as well as small teams and indie developers.


What's Nitro?

Nitro is great when you need the translation done really quick (e.g. in 2 hours) and the text volume is relatively short. All translations within Nitro are performed by professional native-speaking linguists.

Get your content localized in hours via Nitro in 4 simple steps:

  1. Paste the text or attach the file
  2. Select translation languages and get an instant quote
  3. Leave comments / attach a screenshot if necessary
  4. Add funds and send your texts or files off for translation!
Translate with Nitro

Supported file formats

When submitting an order to Nitro, you can upload files or add third-party links to your web documents for translation.


Plain text


Google Docs


Google Sheets



More file formats will be available soon, so let’s stay in touch!

Who is our express translation service for?

Here are our most frequent translation domains and content types. Our translators have experience in other areas, too.

Areas of application


Software, apps & games


Marketing & PR


Business & sales


Horeca & travel


Personal needs

Content types


Website & marketing content


Business and legal docs


Academic papers


Technical docs


Personal docs

Choose the most convenient way to get your professional translation


Nitro: fast-quality translation

Nitro is the perfect match for you if you need online translation or proofreading done within hours, and prefer a self-service option.

  • Native-speaking professional linguists only
  • Self-service platform
  • Fast turnaround: 2-24 hours
  • No monthly fee — pay as you go
Translate via Nitro

Nitro API: speed up updates

Automate the whole content localization process and get your translations delivered directly to your CMS via our Nitro API.

  • Native-speaking professional linguists only
  • Fast turnaround: 2-24 hours
  • Automated translation delivery
  • No monthly fee — pay as you go
Get translation API

Localization: full-cycle service

We recommend choosing this option if you have a large project, and possibly plan to regularly update it.

  • Native-speaking professional linguists only
  • Cloud-based localization process
  • Dedicated project manager
  • Custom integrations on demand
Get a quote

Languages and rates

We translate into 70+ languages. The cost of a translation is based on the number of characters in the source text. There is no minimum order amount.

Source language
Translation language
Rate per 1,000 characters, $
EnglishSpanish (Mexico)16.50
Get an instant quote

Why order translation from us?

Alconost has been providing professional online translations since 2004 and is supported by the human translation platform Nitro.


Professional translators who are native speakers with expertise in their subject matter


Fast translation turnaround: 2-24H


Intuitive web interface and live online support


Easily-automated translation process with the Nitro API


Support of glossaries to maintain translation consistency

Order translation online

What our clients say


I appreciate the quick response and delivery of translations from Nitro. My magazine is enhanced by the accurate and timely output. Thanks again for your service.

African Online Publishing

Yolande Grant, Editor-in-Chief


We used to work with freelance translators via a crowdsourcing platform, but the process was lengthy and complicated. With Nitro it’s easy for us to translate texts for our games into multiple languages simultaneously: we just copy the text, specify the languages needed, and receive our translated texts within 24 hours!


Ekin Usumi, Community manager


The most important thing for me is that Nitro uses only native translators. Texts translated by such linguists sound more authentic, which adds much more credibility to our products. This is critical for translating texts for our websites, as well as Ebay and Amazon platforms.

Cinta Punto

Andrii Bychkovskyi, CEO


It works great for translating small texts into many languages ​​at once. Instead of running around and searching for translators, you can just copy and paste the text, and in like half an hour, you get an email notifying you that the text has already been translated into 3 languages. It's pretty much a perfect self-service.

Duck Rockets

Alexey Dmitriev, CEO


We tried working with freelance translators, but it was time-consuming and far from efficient. We switched to Nitro completely, because with Nitro the translations are ready quickly — as soon as in 2 hours — and all the questions regarding game-specific details are conveniently handled with a manager in the chat.

Full HP Ltd.

Lidia Musakaeva, ASO Specialist


Nitro is extremely helpful when it comes to localisation for us. Allowing for quick turnaround, with great support, the results are of high quality. It's a core part of our process.

Kasedo Games

Christian Woolford, Producer


Our experience with Nitro has been nothing but positive. Your service has been a true life-saver! Translations into 32 languages are oftentimes ready in just one business day, and we can quickly add the option to the app without a release. We also appreciate that we can submit even a single word for translation.


Alexander Lozitsky, CEO and co-founder


Nitro is our favorite go-to service when we need to quickly translate various interfaces into multiple languages ​​at the same time. It has a really cool feature where you can provide the translator with comments and screenshots, which is so important for obtaining an accurate translation.


Sergey Dergachev, Editor


Nitro has been a fantastic service to use for my localization needs. The accuracy of the translations and the speed that I get them back is very convenient for my day-to-day work loads. Their support staff has also been very attentive to my experience and makes sure they do everything they can to make my user experience easier.

Ziggurat Interactive

Emilio Clancy, Associate Producer


Who are the translators with Nitro? How do you hire them?

Nitro provides online human translation services through a network of trusted professionals with a native-level command of the source and target languages. On average, they have been working with Nitro for 4.5 years, and their professional experience exceeds 10 years.

Translations in Nitro are performed by the same native-speaking professionals who work at Alconost. In order to get hired by Alconost, candidates must pass a portfolio review and complete a test. Each translation test is verified by an editor. Only 2.5% of applicants pass the test and can then work at Alconost.

Only those translators who demonstrate a consistently high standard of work are invited to work in Nitro.

Can I add some comments or explanations for the translator?

When placing your order, you can leave comments for the translator and add images that will help them better understand the context.

Can I send files for translation?

At the moment, only plain text and Google Docs can be translated in Nitro.

However, you can send files in any other format using the order form at, in which case one of our agency’s managers will handle your files.

Is it possible to order proofreading services online?

Yes, it is.

If you would like to place an order for your text to be proofread by a native speaker in Nitro, please make sure that the selected source and target languages are the same. For example, English → English [Proofreading].


What is a glossary and how can I benefit from it? Can I create a glossary myself, or upload an existing glossary?

A glossary is a list of terms specific to a particular subject area. For example, in business this might be the names of products and services; in gaming — the names of characters, locations, and items; and in app development — the captions of various interface elements.

Using glossaries helps avoid the need to leave comments for the translator regarding terminology. A glossary helps ensure the consistency of translated text across multiple orders and saves you time.

Nitro supports the use of glossaries. You can create one yourself, or ask us to import a glossary that you already have via online-chat.

How can I pay? Can I get an invoice?

The payment options currently available in Nitro include:

  • Credit card/debit card
  • Wire transfer
  • PayPal

Regular customers have the option of working on credit.

If you are a legal entity, you can request a receipt for topping up your balance or get an invoice for a payment already made. To do this when topping up your balance, select the "Wire transfer" option and follow the instructions on the screen.

Are there any automation opportunities?


Nitro has an API that has proven to be the best fit for quick tasks that require automation such as translation of ad text, in-game or in-app text, website content, and much more.

If you are a developer, and you are looking to integrate a professional human translation feature into your application or system, this can certainly be done.

Read the Nitro API documentation here

Which file types are supported?

When submitting an order to Nitro, you can upload files or add third-party links to your web documents for translation.

Here are the file formats that are currently supported:

  • Plain text (copy and paste the text into the corresponding field);
  • Google File (add link from Google Drive);
  • Strings (use the "Choose a file" button to upload a file from your computer).

More file formats will be available soon, so let’s stay in touch! Please let us know if you require any specific file format to ensure a more convenient translation process.

Do you have translation API?


Nitro has an API that has proven to be the best fit for quick tasks that require automation such as the translation of ad text, in-game or in-app text, website content, and much more.

If you're a developer and looking to integrate a professional human translation feature into your application or system, we can certainly assist!

Read the Nitro API documentation here