Skip to content
DubSync
Upload your video

Lesson · Choosing a language

Which language is best for a YouTube channel?

There is no single best language for YouTube. Record in the language you speak best. The best first language to dub into is the one whose speakers already watch you, where advertisers pay enough and the audience is big enough to matter. This lesson shows how to find it in your own analytics and test it with five videos.

Updated Oct 5, 2026

EnglishOriginal

What is said: I recorded this video once in English. Pick a language and hear the same video in a voice like mine.

What is said: Grabé este video una vez en inglés. Elige un idioma y escucha el mismo video en una voz como la mía.

Demo clip: an AI-generated scene with a fictional character. Dubbed with VDub v2, the model DubSync runs; lip-synced tracks use VSync v2.

Lip-sync shown in these examples is an optional paid add-on, separate from the dubbing trial.

Is there a best language for YouTube?

No. YouTube runs local versions in over 100 countries and 80 languages.1 Much of what gets uploaded isn't in English: when Pew Research Center studied one week of uploads from channels with at least 250,000 subscribers, only 17% of the videos were fully in English.2 That was the first week of 2019, so read it as a snapshot, not a ranking.

Highest ad rate in the dataset
$11.95
United States: median CPM, the price advertisers paid per 1,000 ad impressions.3
Largest YouTube ad audience
491 million
India,4 where the median CPM was $0.96.3
Videos fully in English
17%
Of one week of uploads by popular channels in 2019.2

So the useful question is which language is best for your channel, and for a first dub. Four things decide it.

  • Demand you already have

    Viewers abroad who already watch you, often with captions. This is the strongest signal, and it sits in your analytics.

  • What advertisers pay

    Ad rates differ several times over between countries.3 They follow the viewer's location, not yours.10

  • How big the audience is

    Most of the largest ad audiences4 are in countries with low ad rates.3 You usually trade one for the other.

  • Your niche and the competition

    Some topics travel and some stay local. A large audience often has many channels serving it already.

Find the foreign viewers you already have

Before any ranking, look at who watches you now. A country that shows up in your reports without any effort from you is a better bet than the top language on someone else's list.

  1. Open the Audience tab

    In YouTube Studio, open Analytics, then Audience. Top geographies lists the places with the most watch time on your channel. Top subtitle/CC languages shows which subtitle languages your viewers use.6

  2. Read the two reports together

    A country high on the list where your language isn't widely spoken means people watch in spite of the language. A subtitle language other than your own high on the list means they read to keep up. Both are signs of demand for a dub.

  3. Go one level deeper

    Under a report, click Advanced mode or See more. YouTube names geography among the popular breakdowns there.7 Check single videos too: one video with a large foreign audience shows which topic travels.

  4. Check the dubs you already have

    Automatic dubbing is on by default for eligible creators,8 so some of your videos may already carry dubbed tracks. YouTube's own advice is to check views and watch time by audio language to find where the demand is.9 A language that already gets watch time is a tested candidate.

Compare what advertisers pay in each country

Same view, different price

YouTube explains it this way: advertisers choose which geographies to reach, competition differs from place to place, and so CPM varies by geography.10 CPM is what advertisers pay per 1,000 ad impressions. It is not what a creator receives.

In one dataset of long videos uploaded in 2024, advertisers paid 1.9× as much per 1,000 YouTube ad impressions in the United States as in Germany, 3.5× as much as in Japan, ~7× as much as in Mexico and ~12× as much as in India.3

EnglishOriginal

What is said: Advertisers pay different rates in different countries. Same video, same views, but a very different market.

What is said: Los anunciantes pagan tarifas diferentes en distintos países. Mismo video, mismas vistas, pero un mercado muy diferente.

What is said: Os anunciantes pagam taxas diferentes em países diferentes. Mesmo vídeo, mesmas visualizações, mas um mercado muito diferente.

Demo clip: an AI-generated scene with a fictional character. Dubbed with VDub v2, the model DubSync runs; lip-synced tracks use VSync v2.

Lip-sync shown in these examples is an optional paid add-on, separate from the dubbing trial.

What advertisers paid per 1,000 YouTube ad impressionsMedian CPM in US dollars, long videos uploaded in 2024.
  1. United States$11.95
  2. Australia$8.93
  3. United Kingdom$7.60
  4. Canada$6.65
  5. Netherlands$6.44
  6. Germany$6.43
  7. France$4.54
  8. Italy$3.59
  9. Japan$3.41
  10. Spain$3.14
  11. Poland$2.94
  12. South Korea$2.91
  13. Mexico$1.64
  14. Brazil$1.33
  15. Philippines$1.22
  16. India$0.96
  17. Indonesia$0.87
  18. Turkey$0.87

Source: IsThisChannelMonetized via Digital Information World, Aug 2025.3

Two cautions before you pick the tallest bar. A language is not a country: English reaches the United States and the United Kingdom, and also India and the Philippines, where advertisers paid less than in Mexico.3 And the rate moves with your real viewers: YouTube notes that when views shift to a lower-CPM geography, your CPM can go down.10

The full table for all 49 countries is on YouTube CPM by country. To see ranges for your own views, use the calculator.

The most popular languages on YouTube

We found no official ranking of languages by watch time. Two public figures come close. The first is the number of people YouTube ads can reach in each country, which DataReportal compiles from Google's advertising tools.4 It counts the advertising audience, not every user.

The ten largest YouTube ad audiences in January 2025, with the median long-video CPM for videos uploaded in 2024
CountryLanguage to dub intoYouTube ad audienceMedian CPM
IndiaHindi, Tamil and others491 million$0.96
United StatesEnglish253 million$11.95
BrazilPortuguese144 million$1.33
IndonesiaIndonesian143 million$0.87
MexicoSpanish83.6 million$1.64
JapanJapanese78.7 million$3.41
GermanyGerman65.5 million$6.43
VietnamVietnamese (not offered in DubSync)62.3 million$0.82
PhilippinesEnglish and Filipino (Filipino is not offered in DubSync)57.7 million$1.22
TurkeyTurkish57.5 million$0.87

Ad audience: DataReportal, January 2025.4 Median CPM per 1,000 ad impressions: IsThisChannelMonetized via Digital Information World, long videos uploaded in 2024.3 CPM is the advertiser's price, not a creator's income.

Read the two number columns against each other. Outside the United States, the largest audiences are in India, Brazil, Indonesia and Mexico, and those rows also have low ad rates. Germany and Japan are smaller and pay more.

The table hides two things. India is not one language: YouTube's automatic dubbing lists Hindi, Bengali, Tamil, Telugu, Malayalam and Punjabi separately,8 and DubSync offers Hindi and Tamil. And a country table understates languages spread over many countries: Spanish appears only as Mexico, and Arabic and French don't appear at all.

The second figure is by language, and it is rougher. In 2023 a team led by University of Massachusetts Amherst researchers ran the audio of a random sample of YouTube videos through language-detection software. Among the videos it classified with high confidence, English came first with about 20%, ahead of Hindi (about 8%), Spanish (about 6%) and Portuguese (about 5%).5 The software also ranked Welsh fourth and Latin sixth, which the authors call unlikely, and they say they are not confident in the distribution. The study also counts uploads, not watch time.

Check your niche and the competition

Ad rates and audience size describe a market. They say nothing about whether that market wants your videos.

Topics that travel

  • How-to, repair, cooking, crafts and fitness, where the picture carries half the meaning.
  • Science, technology and software tutorials.
  • Your own animation, nature footage and other narrated videos.
  • Games, products and brands that are also sold in the target country.

Topics that stay home

  • Local news, politics and law.
  • Prices, taxes, banks and services that exist only in your country.
  • Humor built on wordplay or local celebrities.
  • Reviews of products the new viewers can't buy.

Then check the competition by hand.

  • Translate the titles of your three best videos and search for them on YouTube in the target language.
  • Look at the first results. Are they recent? Do they come from channels of your size or from large media brands?
  • Many strong, recent results mean real demand and a real fight for it. Few results can mean an open field or no interest, and your analytics tell you which.

A simple decision table

Find the row that describes your channel. If two rows fit, take the higher one: data from your own viewers beats any market average.

Which language to dub into first, by situation
Check before you startFirst language to test
A country where your language isn't widely spoken already ranks high in your Top geographiesIs it one lucky video or several? Several videos with the same foreign audience are a pattern.That country's main language
You publish in a language other than English, on a topic that isn't localThe two highest ad rates in the dataset were in the United States and Australia.3 Would the topic make sense to a viewer there?English
You publish in English and want the largest new audienceIndia, Brazil, Indonesia and Mexico had the largest ad audiences outside the US,4 with low ad rates.3Spanish, Portuguese, Hindi or Indonesian
You publish in English and care most about ad ratesAmong the ten largest ad audiences,4 Germany had the highest median CPM after the US, then Japan.3 Both audiences are smaller.German, then Japanese
You sell a course, a product or a serviceWhere can customers pay you and get support? That matters more than any ad rate.The language of the customers you can serve
Your videos are about local news, law, prices or wordplayWould anyone abroad search for this topic? If not, a dub only adds cost.None yet. Start with videos on topics that travel.

If you publish in English, look at YouTube's own tracks before you pay for a dub. Its automatic dubbing lists Spanish, Portuguese, Hindi, Indonesian, German and Japanese among the languages it makes from English videos,8 so part of this test may already be running on your channel. Our lesson on YouTube auto dubbing shows how to review those tracks and when to replace one with your own.

If you don't publish in English yet

The demo clip stages the second row of the table: a fictional creator who records in Portuguese and adds English.

English audio makes a video understandable to English speakers. It doesn't put the video in front of them: the title, the thumbnail and the topic still have to earn the click. Our lesson on getting a US audience on YouTube covers that part.

PortugueseOriginal

What is said: Eu gravo meus vídeos em português. Agora, o meu canal também fala inglês com uma voz parecida com a minha.

What is said: I record my videos in Portuguese. Now my channel also speaks English with a voice similar to mine.

What is said: Grabo mis videos en portugués. Ahora mi canal también habla inglés con una voz parecida a la mía.

Demo clip: an AI-generated scene with a fictional character. Dubbed with VDub v2, the model DubSync runs; lip-synced tracks use VSync v2.

Lip-sync shown in these examples is an optional paid add-on, separate from the dubbing trial.

Hear the candidates

Test the language with five of your top videos

One dubbed video proves little: it may simply be a strong or a weak video. Five are enough to show a pattern without dubbing your whole catalog. Treat the number as a rule of thumb, not a statistic.

  1. Pick five of your videos that already work

    Choose videos that still get views long after upload, on topics that aren't tied to your country, with clear speech. Each file can be MP4, MOV or M4V, up to 150 minutes and 1 GB.

  2. Dub all five into one language

    Upload each file and choose one of 28 target languages. The spoken language is detected for you. You see the input minutes and the cost before anything starts, and you confirm your rights and every speaker's consent.

  3. Watch every result

    Each speaker gets a voice created from their own: similar, not identical. There is no script editing in DubSync, so if a line is wrong, fix the source video and dub it again, which uses minutes again. Ask a native speaker to watch at least one.

  4. Publish all five the same way

    DubSync gives you an MP4 and doesn't publish it anywhere. On YouTube, either add each dub to the existing video as an audio track or upload the dubbed MP4s to a channel for that language. An audio track needs access to advanced features and an audio-only file, so export the audio from the dubbed MP4 in any editor first. If YouTube already made an automatic dub in that language, delete it before you upload yours.9 Our multi-language audio guide compares the two routes.

  5. Group them and wait

    In Advanced mode, create a group with the five videos so you can read them as one.7 Give the test a few weeks, and longer on a new channel that starts without subscribers. Then look at watch time from the countries where the language is spoken and, if you added audio tracks, at watch time by audio language.9

  6. Decide

    If people in the target countries watch, and stay about as long as your original viewers, dub more of your catalog into that language. If views come but drop off early, try other videos before another language. If nothing moves, test the next candidate from the table.

For context: YouTube says that creators who added their own audio tracks got, on average, more than 25% of their watch time from views in a language other than the video's primary one.11 That is an average across creators who used the feature, not a forecast for your channel.

Plans from $4.90/month. You see the minutes and the cost before anything starts. See pricing

Questions before you start

What are the most popular languages on YouTube?

We found no official ranking of languages by watch time. By country, the largest YouTube ad audiences in January 2025 were India, the United States, Brazil, Indonesia and Mexico.4 By language, a 2023 academic study of a random sample of videos put English first, at about a fifth of the videos it classified with high confidence, ahead of Hindi, Spanish and Portuguese. Its authors say they are not confident in the shares.5

I'm starting a new channel. Which language should I record in?

The one you speak best. A dub is built from your original recording, so clear, natural speech matters more than the language you start in. Add other languages later, one at a time, once a few videos have proved themselves.

Should I dub into several languages at once?

Start with one. In DubSync each target language is its own project and uses the video's input minutes again. Test one, read the result, then add the next.

YouTube already auto-dubs my videos. Do I still have to choose?

Use it as a signal first. Automatic dubbing is on by default for eligible creators. It dubs English videos into a set list of languages, and videos in other supported languages mostly into English.8 A dub of your own makes sense once a language shows demand and you need something the automatic track doesn't give you: a language pair YouTube doesn't offer, or an MP4 file you can post outside YouTube.

Will a dub in a higher-paying language raise my RPM?

Only if viewers in higher-paying countries watch it. RPM is your revenue per 1,000 views after YouTube's share; CPM is what advertisers pay per 1,000 ad impressions. YouTube says CPM varies by geography, and that your CPM can fall when views shift toward lower-CPM geographies.10 A dub that brings viewers from lower-rate countries can pull the average down while still adding views. Nobody can promise either outcome, which is why the five-video test comes first.

Sources

  1. YouTube Official Blog. YouTube for Press. Accessed Oct 5, 2026.
  2. Digital Information World (data compiled by IsThisChannelMonetized). YouTube CPM Rates in 2025: How Location Shapes Earnings. Published Aug 11, 2025; accessed Oct 3, 2026.
  3. DataReportal (Kepios). YouTube Users, Stats, Data & Trends for 2025. Published Mar 12, 2025; accessed Oct 5, 2026.
  4. Journal of Quantitative Description: Digital Media. Dialing for Videos: A Random Sample of YouTube (McGrady, Zheng, Curran, Baumgartner and Zuckerman). Published Dec 20, 2023; accessed Oct 5, 2026.
  5. YouTube Help. Understand your YouTube audience (help article 9314416). Accessed Oct 5, 2026.
  6. YouTube Help. Learn how to use Advanced mode for analytics reports (help article 9717005). Accessed Oct 5, 2026.
  7. YouTube Help. Use automatic dubbing (help article 15569972). Accessed Oct 3, 2026.
  8. YouTube Help. Add Multi-language features to your videos (help article 13338784). Accessed Oct 3, 2026.
  9. YouTube Help. Understand ad revenue analytics (help article 9314357). Accessed Oct 3, 2026.
  10. YouTube Official Blog. Unlock a world of viewers with multi-language audio. Published Sep 10, 2025; accessed Oct 3, 2026.

Keep exploring

Start the test

Pick one language and dub your first video into it.

Upload it, see the minutes, then decide.

Upload my video

Only upload videos you have the rights to, with every speaker's permission.