Language Learning Hours Calculator
How long a language will take at the hours you can give it — from the total hours a level needs for a language of that difficulty, the hours you study each week, and how much of that time is effective — with the finish date in months and what an extra hour a week would save.
Reaching working proficiency takes a known number of classroom hours: about 600 to 750 for languages close to English, 1,100 for those further away, 2,200 for the hardest.
How the language learning hours calculator works
Reaching working proficiency takes a known number of classroom hours: about 600 to 750 for languages close to English, 1,100 for those further away, 2,200 for the hardest. Divide by the hours you actually put in each week — scaled by how effective they are, since a distracted hour is half an hour — and the months fall out. Vocabulary follows a similar arithmetic: the most common thousand words cover most of everyday speech, and each thousand after adds less.
Formula: weeks = hours needed / (weekly hours × effectiveness); months = weeks / 4.345
Worked examples
| Inputs | Months to the target level | Note |
|---|---|---|
| 1,100 hours at six a week | 52.7 | about four and a half years |
| A closely related language | 18.7 | under two years |
| Immersion | 9.4 | under a year |
FAQFrequently asked questions
How many hours does a language take?
Roughly 600 to 750 hours of study for languages close to English (Spanish, French, Dutch), 900 to 1,100 for German, Indonesian and Swahili, and about 2,200 for Arabic, Chinese, Japanese and Korean, to working proficiency. The figures come from language-school experience and are inputs here.
What does effectiveness mean?
How much of an hour is real practice — speaking, listening, active recall — rather than passive time. Classroom or tutored hours are near 100%; half-attentive app time is far less.
Is it better to study more hours or more often?
More often: five short sessions beat one long one for retention. The total hours still have to be put in, but daily practice makes each hour count for more.
How many words do I need?
The most frequent 1,000 words cover about 80% of everyday speech, 3,000 about 95%. Coverage grows slowly after that, which is why the middle of the journey feels flat.
Can I go faster?
Immersion and a tutor raise both hours and effectiveness. Nothing removes the hours; the fastest learners are the ones who find more of them.
Where these figures come from
- Brysbaert (2019), Journal of Memory and Language — How many words do we read per minute? — the 238 wpm silent reading rate, from 190 studies
- Tertiary Education Quality and Standards Agency — the Australian higher education regulator
Last checked: September 2026. Reading and writing rates are from published meta-analyses, cited on the page.