に則って means based on; according to; in accordance with ~. It is a JLPT N1 Japanese grammar pattern used to express that an action or decision strictly follows a rule, precedent, principle, or legal provision.
This grammar point appears in formal writing, news reports, legal documents, and JLPT N1 reading passages. If you need to emphasise that something is done exactly as prescribed by a rule or standard, に則って is the precise, sophisticated choice.
What does に則って mean?
Use に則って when you want to say that someone acts strictly in line with a rule, law, precedent, or established principle. It implies that there is little room for personal interpretation — the rule is the sole guide.
Natural translations include:
- based on; according to; in accordance with
- following (the rule/precedent); in conformity with
Try to notice the writer’s or speaker’s purpose first, then choose the English phrase that fits that context.
When you need to follow a rule to the letter, に則って is your phrase.
How to form に則って
The pattern attaches to Nouns — specifically, nouns that represent a rule, precedent, guideline, or standard.
The most common form is the te-form に則って, which connects to a following action. You will also encounter these related forms:
Noun+に則った＋名詞
- に則り — the formal conjunctive form, often used in written or ceremonial contexts.
- に則った — modifies a following noun, e.g. 法律に則った手続き (procedures based on the law).
In JLPT questions, the wrong answer choices often use a similar meaning but attach to the wrong type of word. Remember: this pattern only follows nouns — never verbs or adjectives directly.
When is に則って used?
Use に則って in situations like:
- describing official procedures, court rulings, or administrative decisions
- explaining that a decision was made exactly as prescribed by a rule
- emphasising strict adherence to a set of guidelines or a past precedent
- reporting actions in formal writing, business, or journalism
Tone and register:
- Formal — this is not a casual pattern. It belongs in reports, articles, speeches, and legal or academic contexts.
- You will rarely hear it in everyday chat unless someone is quoting a rule or deliberately being formal.
に則って example sentences
After reading each sentence, ask what job に則って is doing: it signals that the action is carried out based strictly on a rule or standard. That makes the nuance easier to remember than a one‑word translation.
Nuance of に則って
The key nuance is strict, formal adherence to a rule, law, or precedent — no personal discretion implied.
A pattern may look like “according to”, but に則って conveys that the speaker or writer is quoting an external, authoritative standard. There’s a strong sense that deviation is neither expected nor allowed.
For example:
- In a legal context, “法律に則って” leaves no room for “but I felt it was unfair” — the law dictated the outcome.
- Compared with に従って (to follow), に則って is more formal and rule-bound; it implies the rule is a fixed framework, not just a general guide.
に則って vs に従って
Both に則って and に従って can be translated as “in accordance with”, but they differ in tone and scope.
Quick contrast:
- 規則に則って判断する → judgment based on the rule, as if the rule is the sole standard.
- 指示に従って判断する → judgment following instructions, but possibly allowing some interpretation.
If both translations seem possible, check the formality level and whether the source is a fixed, written rule. に則って almost always refers to a codified norm; に従って is broader.
Common mistakes with に則って
A helpful practice method: write a formal sentence with に則って, then replace the rule-noun with something casual like “友達の提案”. You’ll immediately feel the clash in tone — that’s how you internalise its proper register.
Is に則って on the JLPT?
At this level, you’ll be expected to:
- recognise it in formal texts (legal, business, essay)
- choose it over similar patterns like に基づいて or に従って when the context demands strict rule-adherence
- interpret its nuance in reading comprehension
JLPT N1 questions often test whether you understand the surrounding context, not just the dictionary meaning. If the passage quotes a law or regulation, に則って is your likely answer.
Practice questions for に則って
Keep your first sentences simple — start with a clear rule-noun (法律, 規則, 前例, 憲法).
Learning path for に則って
To learn に則って efficiently, move from formation to contrast and finally to production.
Related grammar to review next
- に — master the fundamental particle に before tacking on formal compounds like に則って
- に値する — learn how to say “worthy of / deserves” — often appears in similar formal evaluations
- にあって — another formal N1 pattern used to pinpoint a situation or condition under which something holds
- にひきかえ — a sharp contrast pattern (“in contrast to”) that shares the same formal register
Learn に則って with Hane
If you want to review に則って together with the related patterns above, Hane helps you practice Japanese in short, focused sessions.
Browse more lessons here:
FAQ about に則って
What does に則って (ni nottotte) mean in Japanese?
に則って (ni nottotte) means “based on; according to; in accordance with”. It is JLPT N1 grammar. Use に則って when you want to say that someone acts strictly in line with a rule, law, precedent, or established principle. It implies that there is little room for personal interpretation — the rule is the sole guide.
How do you form に則って (ni nottotte)?
The pattern attaches to Nouns — specifically, nouns that represent a rule, precedent, guideline, or standard. Noun (rule / precedent / principle) + に則って The most common form is the te-form に則って, which connects to a following action.
What is the difference between に則って and に従って?
に則って: Rule-based, formal, no flexibility. に従って: Following, can be more flexible.
What is an example sentence with に則って (ni nottotte)?
裁判所は法律に則って判断を下した。 — The court handed down its decision in accordance with the law.