The US Foreign Service Institute puts Japanese in its hardest category for English speakers — around 2,200 class hours to professional working proficiency, versus about 600 for Spanish. So: yes, objectively hard.
But that number hides something more useful. Japanese is hard in a few specific places and unusually easy in others, and knowing which is which changes how you should spend your first year.
What's genuinely hard
The writing system. Three scripts, and one of them has thousands of characters with multiple readings each. This is the real cost, and there's no way around it — though it's smaller than the headline number suggests, because the characters you meet first are the ones that recur most.
Zero shared vocabulary. With French or German, thousands of words are free. With Japanese, almost nothing transfers — every word is new. (The loanwords in katakana help a little, but コンセント means "power outlet", so trust them cautiously.)
Word order and structure. Japanese is subject–object–verb, the verb lands at the end, and the subject is routinely omitted entirely. You have to hold a sentence open in your head until the final word tells you whether it was positive, negative, past, or a question.
Politeness levels. Register is grammatically encoded. The same sentence has casual, polite, humble, and honorific versions, and choosing wrong is socially visible. (Guide.)
Counters. You can't just say "three" — you need the right classifier for the kind of thing. (Guide.)
What's surprisingly easy
Pronunciation. Five clean vowels, a small consonant set, almost no sounds that don't exist in English. Japanese is dramatically easier to pronounce intelligibly than French, Mandarin, or Arabic. Beginners sound comprehensible within weeks — pitch accent adds polish later, but it rarely blocks understanding.
No tones. Unlike Mandarin, Thai, or Vietnamese.
Regular verbs. Japanese has essentially two irregular verbs (する and 来る). Two. Compare with Spanish, French, or English. Conjugation is a small set of consistent rules. (How it works.)
No gendered nouns, no plurals, no articles. No memorizing der/die/das, no a/the agonizing, no adding -s.
Kana is trivial. Both syllabaries are learnable in a week or two, and unlike English spelling they're fully phonetic. (Guide.)
Numbers are regular. No "eleven/twelve" weirdness — just ten-one, ten-two.
Where the difficulty actually lands
Japanese is front-loaded and back-loaded, with an easy middle.
The first two months are hard because everything is unfamiliar at once — new scripts, new word order, zero recognizable vocabulary. Many people quit here, and it's the least representative part of the whole journey.
Months three through eighteen are the good part. The rules are regular, progress is visible, and every new word makes reading measurably better.
Then advanced Japanese gets hard again for a different reason: nuance, register, idiom, and the sheer vocabulary volume of native material.
Practical implication: the hardest thing you'll do is survive the first eight weeks. Design for that. Keep sessions short, make them daily, and pick a study method with as little setup friction as possible — a habit that survives is worth more than an optimal plan you abandon.
So how long will it take?
Roughly: a few months to travel-functional, a year or two of consistent daily study to comfortable conversation and N3-level reading, several years to genuine fluency. Broken down properly in how long it takes to learn Japanese.
The dominant variable isn't talent. It's daily consistency — twenty focused minutes every day beats three hours every other Sunday, because spaced repetition only works if the spacing keeps happening. (Why.)
The honest bottom line
Japanese is hard in ways that are mostly a matter of volume — characters and vocabulary — rather than complexity. There's no conceptual monster in Japanese grammar comparable to Russian cases or Arabic morphology. It's a large amount of learnable, regular material, which means the whole game is showing up consistently for long enough.
That's why Cotobara is built to remove decisions rather than add features: the words are curated and ordered for you, the review scheduling is automatic, and a session is short enough to do on a bad day. The hardest part of Japanese is the part where you keep going, so that's the part worth optimizing. If you're at the very beginning, start here.
Start Cotobara for free — twenty minutes a day is the whole strategy.