～かぎり / ～ないかぎり: As Long As / Unless

限り (kagiri) grammar brings "as long as," "unless," "as far as I know," and the noun "limit" into one word. All four senses trace back to a single idea: a boundary.¹ For a JLPT N2 candidate, seeing that shared core is the difference between memorizing four patterns and understanding one.

Overview

The verb 限る (かぎる) means "to set a boundary and define a range" with respect to time, space, quantity, or qualification.² Its continuative form, 限り (かぎり), keeps that same boundary meaning as a noun: a limit, or the edge of a range beyond which there is nothing.³⁴

Every grammaticalized sense in this article fits inside that one idea. Each marks the edge of some range and says the main clause holds inside that edge.¹ The 文型辞典 treats the whole かぎり cluster under the common thread that it "limits or bounds some matter."¹

One word, one core idea: a boundary

限る is a ラ行五段 (godan) transitive verb, meaning it takes a direct object. The dictionary gloss is "to set a boundary and define a range with respect to time, space, quantity, or qualification," illustrated by 期限を十日と限る "set the deadline at ten days."²

限り is the noun derived from that verb. 大辞泉 glosses it as "a boundary or limit of time, space, quantity, or degree; also an end or last point," and the 大辞林系 dictionary states it as "the edge of a range beyond which there is nothing; a limit; an end."³⁴

The boundary line behind every sense

Picture 限り as a line drawn around a range. "As long as" means the result holds inside the line. "Unless" means it holds only outside the line. "As far as I know" draws the line around your information, and the noun "limit" is the line itself.²¹

The verb also yields two patterns that share the boundary metaphor but sit outside this article: に限る "nothing surpasses this" (as in 夏はビールに限る, "nothing beats beer in summer") and the negated とは限らない "cannot be definitively concluded" (as in 酒がからだに毒だとは限らない, "alcohol is not necessarily bad for the body").²

Where 限り sits on the JLPT map

～かぎり(は), ～かぎり(では), and ～ないかぎり are N2.⁵⁶⁷

The JLPT publishes no official grammar list, so this N2 placement rests on converging grammar-reference sources rather than an official can-do statement. MLC files both ～限りは and ～ない限り under N2,⁵ Bunpro tags the 限り point N2,⁶ and JLPT Sensei files 限り under N2.⁷

Two related patterns sit at N1 and are named here only as boundary markers, not taught in detail: 限りだ "extremely / I feel so ~"⁸ and を限りに "as of / with this as the last."⁹ The bare noun 限り "limit / utmost" is ordinary vocabulary, not a graded grammar point.³⁴

Form and attachment

The grammar references give a consistent attachment pattern across the connective senses.¹⁶⁵ The table below shows how each preceding element joins to かぎり.

Preceding element	Attaches as	Example
Verb, plain non-past	辞書形 + かぎり	生きる → 生きるかぎり
Verb, stative	ている + かぎり	生きている → 生きているかぎり
Verb, past (cognition / perception)	た + かぎり	調べた → 調べたかぎり(では)
Verb, negative	ない形 + かぎり	謝らない → 謝らないかぎり
い-adjective	辞書形 + かぎり	若い → 若いかぎり
な-adjective	な / である + かぎり	丈夫 → 丈夫なかぎり / 丈夫であるかぎり
Noun, durative "as long as"	である + かぎり	学生 → 学生であるかぎり
Noun, utmost / scope	の + かぎり	力 → 力のかぎり

The two noun paths stay distinct. Noun + の + かぎり gives the "utmost / all of" reading (力のかぎり, "with all one's strength"). Noun + である + かぎり gives the durative "as long as one is N" reading (学生であるかぎり, "as long as one is a student").¹¹⁰

Keep the two noun paths apart

の and である are not interchangeable after a noun. 力のかぎり means "with all one's strength," while 学生であるかぎり means "as long as you are a student." If you swap の for である, the sense changes entirely.¹¹⁰

～かぎり(は): attaching "as long as"

This sense attaches to 辞書形, ている, or た, plus the な-adjective and noun である paths above. The optional は adds topic emphasis: "for as long as X."⁵¹

The stative ている form is typical, because the clause names a state that persists.⁵¹¹

日本にほんにいるかぎり、日本語にほんごの勉強べんきょうを続つづけようと思おもいます。⁵
"As long as I am in Japan, I intend to keep studying Japanese."

生いきているかぎり、いいこともあれば悪わるいこともある。⁵
"As long as you are alive, there are good things and bad things alike."

体からだが丈夫じょうぶなかぎり、働はたらきたい。¹
"As long as my body is healthy, I want to keep working."

～ないかぎり: attaching "unless"

This is the nai-form plus かぎり. It is the negative-conditional side of the same word: "as long as NOT X" reads naturally as "unless X."⁵¹¹ The main clause states what will not change or happen while X stays unmet.⁵

あの人ひとが謝あやまらないかぎり、私わたしは彼かれを許ゆるしません。⁵
"Unless that person apologizes, I will not forgive him."

急用きゅうようが入はいらないかぎり、明日あしたも来くる予定よていです。⁵
"Unless something urgent comes up, I plan to come tomorrow as well."

自分じぶんが変かわらないかぎり、何なにも変かわらない。¹¹
"Unless you change yourself, nothing will change."

Noun and na-adjective: の限り and である限り

Noun + の + かぎり gives the utmost or all-of reading (力のかぎり, "with all one's strength").¹¹¹ Noun + である + かぎり and な-adjective な/である + かぎり give the durative "as long as one is N" reading (学生であるかぎり, 丈夫なかぎり).¹¹⁰

学生がくせいであるかぎり、勉強べんきょうが本分ほんぶんだ。¹
"As long as you are a student, studying is your duty."

力ちからのかぎりがんばります。¹¹
"I will do my very best, with all my strength."

この会社かいしゃにいるかぎり、年収ねんしゅうアップは望のぞめない。¹⁰
"As long as I stay at this company, a raise in annual income is not to be hoped for."

The three senses, sorted

The connective かぎり has three readings, and the noun keeps a fourth. The diagram traces all four back to the one boundary core.

～かぎり(は) = "as long as / so long as"

The main clause holds for the duration or scope in which X is true. 大辞泉 glosses the connective as "during the time that; given that," with 君がここにいる限り僕も付き合う "as long as you are here, I'll keep you company."³ The 文型辞典 groups this as the conditional/scope reading and notes it can often be paraphrased with ～たら or ～ば.¹⁰

君きみがここにいるかぎり、僕ぼくも付つき合あう。³
"As long as you are here, I will stay with you."

命いのちがあるかぎり、君きみのことを守まもります。¹¹
"As long as I have life, I will protect you."

この仕事しごとは、私わたしが生いきているかぎり、ずっと続つづけていきたい。⁷
"As long as I live, I want to keep doing this work."

～かぎり(では) = "as far as (I know / saw / heard)"

This is the limited-information reading: the speaker signals that the statement holds only within the bounds of what they know, saw, heard, or investigated.¹¹¹⁰ It typically forms on a cognition or perception verb in 辞書形 or た form, often with では. Common forms include 私の知るかぎり(では), 調べたかぎりでは, and 見たかぎりでは.¹¹¹ 大辞泉 illustrates this scope sense with 私の聞いた限りでは、そうではなかった.³

私わたしの知しっているかぎりでは、彼女かのじょはまだ結婚けっこんしていません。⁷
"As far as I know, she is not married yet."

辞書じしょを見みたかぎりでは、そんな言葉ことばはないようだ。¹¹
"As far as I checked the dictionary, there seems to be no such word."

私わたしの聞きいたかぎりでは、そうではなかった。³
"As far as I heard, that was not the case."

～ないかぎり = "unless"

Here Y will not change or occur without X. To connect it back to かぎり, read it as "as long as NOT X."⁵¹¹ The references stress that ないかぎり frames a standing precondition, stronger and more categorical than a plain negative conditional.⁵

行列ぎょうれつに並ならばないかぎり、あのパンは買かえない。⁶
"Unless you get in line, you can't buy that bread."

明日あしたは、雨あめが降ふらないかぎり、10時じゅうじに学校がっこうで会あいましょう。⁷
"Tomorrow, unless it rains, let's meet at school at ten."

意識いしきして気きを付つけないかぎり、あの癖くせは直なおらない。⁶
"Unless you consciously pay attention, that habit won't go away."

限り as the noun "limit / bounds"

Beyond the basic "boundary" sense, 大辞泉 lists two further noun uses: "everything within that scope," as in 見渡す限りの大平原 "a plain as far as the eye can see," and "to the utmost degree," as in 力の限り戦う "fight with all one's might."³ The kokugo dictionary keeps the core sense as 限界 / 終わり, as in 限りある命 "a finite life."⁴

In fixed expressions, 今日限り means "only for today" or "today is the last," and 数に限りがある means "there is a limit to the number."¹¹³⁴

見渡みわたすかぎりの大平原だいへいげんが広ひろがっていた。³
"A vast plain stretched out as far as the eye could see."

制服せいふくを着きるのも今日きょうかぎりだ。¹¹
"Today is the last day I'll wear this uniform."

このチケットは数かずにかぎりがある。³
"These tickets are limited in number."

Nuance and usage contexts

～ないかぎり vs the negative conditional

ないかぎり overlaps in English with the negative conditionals なければ and なかったら. But it frames a standing condition or scope, "for the whole time X is not met," rather than a single triggering event.⁵ The references describe ないかぎり as stronger and more categorical: the result simply will not obtain anywhere inside the boundary where X is unmet.⁵

A fuller side-by-side comparison of the conditionals covers と, ば, たら, and なら together.

かぎり vs the まで and しか limit family

かぎり, まで, and しか are all "limit" words, but each draws the boundary differently. かぎり marks the scope within which a condition holds. まで marks an endpoint of a span, the point you reach and stop. しか marks exclusion, nothing other than X, paired with a negative predicate.³⁴

A compact way to hold them apart: かぎり is "within which it holds," まで is "up to where," and しか is "nothing but."³⁴

Register and frequency

The hedging 知るかぎり / 見たかぎり forms recur across the teaching references, typically introducing a cautious statement of what the speaker knows or has observed.¹¹¹⁰

No dated corpus count was sourced for a numeric frequency or a register split between speech and writing, so this article asserts neither.

Good to know

Why "as long as" and "unless" are the same word

Both senses come from one root meaning "to set a boundary," the verb 限る.² Inside the line, the result holds. That is かぎり "as long as." The negative ないかぎり puts the speaker on the not-yet-X side of the same line, which English renders as "unless." Read ないかぎり literally as "as long as NOT X," and the unity becomes visible.⁵¹¹

とは限らない is a different point

A common mix-up is using ～ないかぎり "unless" when the intended meaning is ～とは限らない "not necessarily." To say "studying doesn't necessarily mean you'll pass," 勉強しないかぎり合格する is wrong. Use the form below instead.

勉強べんきょうしたからといって合格ごうかくするとは限かぎらない。¹²
"Just because you study does not necessarily mean you will pass."

～とは限らない is a separate pattern (Bunpro files it at N3). It negates 限る "to limit" to mean "it is not necessarily the case." It is not the negative conditional ないかぎり and does not mean "unless."¹²²

に限る and 限りだ are nearby but out of scope

大辞泉 lists に限る under 限る sense 2b, "nothing surpasses this," as in 寒い日は鍋に限る "on a cold day, nothing beats hot pot."² 限りだ, as in 嬉しい限りだ "I am extremely happy," is the emotional-superlative use and is filed N1. を限りに "as of / with this as the last" is also N1.⁸⁹ These mark the edges of the wider 限り cluster, so a learner can see that this page is one slice of it.

See also

• Japanese Conditionals Overview: と, ば, たら, なら (Which "If" to Use)
• ～間に (aida ni): During / While
• ～うちに: How to Say "While" and "Before X Changes" in Japanese
• The だけ Particle: Only (Limit)
• ～しかない: "No Choice but to" and "There Is Only" in Japanese
• N1 Set Phrases Reference: A Glossed Catalog of Advanced Japanese Grammar

References

Footnotes

1. グループ・ジャマシイ 編著『日本語文型辞典 改訂版』. くろしお出版, 2023 (初版 1998). Representative editor 砂川有里子 (筑波大学名誉教授・国立国語研究所客員教授). https://www.9640.jp/未分類/10259/ ↩ ↩² ↩³ ↩⁴ ↩⁵ ↩⁶ ↩⁷ ↩⁸ ↩⁹ ↩¹⁰ ↩¹¹ ↩¹² ↩¹³

2. 小学館『デジタル大辞泉』, entry 限る（かぎる）, aggregated by Weblio. https://www.weblio.jp/content/%E9%99%90%E3%82%8B ↩ ↩² ↩³ ↩⁴ ↩⁵ ↩⁶ ↩⁷

3. 小学館『デジタル大辞泉』, entry 限り（かぎり）, aggregated by Weblio. https://www.weblio.jp/content/%E9%99%90%E3%82%8A ↩ ↩² ↩³ ↩⁴ ↩⁵ ↩⁶ ↩⁷ ↩⁸ ↩⁹ ↩¹⁰ ↩¹¹ ↩¹² ↩¹³

4. 三省堂『大辞林』系 国語辞典, entry 限り（かぎり）, via jitenon 国語辞典. https://kokugo.jitenon.jp/word/p7496 ↩ ↩² ↩³ ↩⁴ ↩⁵ ↩⁶ ↩⁷

5. MLC Japanese Language School (Tokyo). "JLPT N2 grammar: ～限りは・～ない限り." https://www.mlcjapanese.co.jp/n2_04_18.html ↩ ↩² ↩³ ↩⁴ ↩⁵ ↩⁶ ↩⁷ ↩⁸ ↩⁹ ↩¹⁰ ↩¹¹ ↩¹² ↩¹³ ↩¹⁴ ↩¹⁵ ↩¹⁶

6. Bunpro. "限り (JLPT N2)" grammar point and linked sibling points. https://bunpro.jp/grammar_points/限り (limitation) ↩ ↩² ↩³ ↩⁴ ↩⁵

7. JLPT Sensei. "JLPT N2 Grammar: 限り (kagiri) Meaning." https://jlptsensei.com/learn-japanese-grammar/限り-kagiri-meaning/ (limitation) ↩ ↩² ↩³ ↩⁴ ↩⁵

8. MLC Japanese Language School (Tokyo). "JLPT N1 grammar: ～限りだ." https://www.mlcjapanese.co.jp/n1_04_12.html ↩ ↩²

9. MLC Japanese Language School (Tokyo). "JLPT N1 grammar: ～を限りに." https://www.mlcjapanese.co.jp/n1_04_10.html ↩ ↩²

10. 日本語教育ナビ (author むきえび). "「限り」「かぎり」の2つの用法【例文で学ぶ 日本語文法】." https://japanese-language-education.com/kagiri/ (limitation; pedagogy site, not an academic reference) ↩ ↩² ↩³ ↩⁴ ↩⁵ ↩⁶ ↩⁷

11. Maggie Sensei. "How to use 限り (kagiri) ・限る (kagiru)." https://maggiesensei.com/2016/02/15/how-to-use-限り-kagiri-・限る-kagiru/ (limitation) ↩ ↩² ↩³ ↩⁴ ↩⁵ ↩⁶ ↩⁷ ↩⁸ ↩⁹ ↩¹⁰ ↩¹¹ ↩¹² ↩¹³ ↩¹⁴

12. Bunpro. "とは限らない (JLPT N3)" grammar point. https://bunpro.jp/grammar_points/とは限らない (limitation) ↩ ↩²