Is 30 minutes a day enough to learn Japanese?

It is enough to run one course, a small review loop, and a short input item. It is not enough to run three full programs. Consistency beats a longer plan you skip.

What if I only have 15 minutes?

Do due reviews, or do a short input item if the queue is empty. Add no new cards. The 15-minute day exists so you can return to the 30-minute shape tomorrow.

Japanese study plans for 15, 30, and 60 minutes a day

Use an ordinary weekday, not a Sunday burst. Fifteen minutes keeps the path alive. Thirty minutes is the default. Sixty minutes adds a second input or production block, not a second course.

Thirty minutes a day is enough Japanese if one course owns the sequence, reviews stay small, and you finish a short piece of input. It is not enough for three apps that each want a full lesson.

Use an ordinary weekday. Do not plan from your most motivated Sunday.

If kana is still the whole problem, use Learn kana in two weeks inside these boxes. If the calendar is already a pile of icons, cut tools with Too many Japanese apps first.

Direct answer

Time you can protect	Do this	Do not do this
15 minutes	Due reviews, or one short input item if the queue is empty	New cards, a new app, a second course
30 minutes	Reviews, one course chunk, one short reading or listening item	Two textbooks, a full SRS catch-up
60 minutes	The 30-minute shape, plus a second input block or light production	A second full course, a new kanji method

The resource names below are examples. Swap in the course and input you already chose on the beginner hub or intermediate hub. If you still need names for each job, use the study stack builder.

15 minutes

This day exists so the habit survives travel, illness, and deadlines.

Open the one review loop you kept. Anki, a course SRS, or Inku on iPhone. Finish due items only. Add nothing new.
If the queue is empty, play one Nihongo con Teppei episode or read half of an NHK News Web Easy article.
Stop on time.

Zero new cards is correct. The SRS burnout guide is the longer version of that rule.

30 minutes

This is the default adult plan.

Reviews (about 10 minutes). Due work first. Stop when the box ends.
Course (about 10 to 15 minutes). One Genki section and workbook spread, or one Irodori page with audio. Finish the chunk. Do not start the next unit to feel ahead.
Input (the remaining minutes). One easy article or a short audio segment. Finish it.

If reviews eat the whole half hour, add no new cards tomorrow. Input is the thing the reviews were supposed to support.

60 minutes

Use the extra half hour for more Japanese, not more tools.

Run the 30-minute shape.
Add a second input block: another page, a longer audio segment, or the same article again without looking up every word.
Optional: five to ten minutes of production, such as writing three sentences from today’s lesson or speaking the dialogue aloud. That is not a reason to subscribe to a new speaking app unless speaking is the named bottleneck.

Do not spend the second half hour comparing WaniKani to another kanji method. If kanji is the job, pick one path and keep the reviews inside the first block.

How the three days connect

Move down the table when a smaller day has been stable for two weeks. Move up when life gets crowded. The 15-minute day is the path back, not a failure.

For wiring a textbook to SRS and input, use How to combine a textbook, SRS, reading, and listening. For leaving a habit app, use What to use after Duolingo.